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Hurricane Laura Public Advisory Number 24
2020-08-25 22:39:40| National Hurricane Center (Atlantic)
Issued at 400 PM CDT Tue Aug 25 2020 000 WTNT33 KNHC 252039 TCPAT3 BULLETIN Hurricane Laura Advisory Number 24 NWS National Hurricane Center Miami FL AL132020 400 PM CDT Tue Aug 25 2020 ...LAURA MOVING WEST-NORTHWESTWARD ACROSS THE CENTRAL GULF OF MEXICO... ...EXPECTED TO STRENGTHEN INTO A MAJOR HURRICANE BEFORE LANDFALL WEDNESDAY NIGHT OR THURSDAY MORNING... SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...24.7N 88.3W ABOUT 480 MI...770 KM SE OF LAKE CHARLES LOUISIANA ABOUT 510 MI...820 KM SE OF GALVESTON TEXAS MAXIMUM SUSTAINED WINDS...80 MPH...130 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 17 MPH...28 KM/H MINIMUM CENTRAL PRESSURE...990 MB...29.24 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * San Luis Pass Texas to the Mouth of the Mississippi River A Hurricane Warning is in effect for... * San Luis Pass Texas to Intracoastal City Louisiana A Tropical Storm Warning is in effect for... * Sargent Texas to San Luis Pass * East of Intracoastal City Louisiana to the Mouth of the Mississippi River A Storm Surge Watch is in effect for... * Freeport Texas to San Luis Pass * Mouth of the Mississippi River to Ocean Springs Mississippi * Lake Pontchartrain, Lake Maurepas, and Lake Borgne A Hurricane Watch is in effect for... * East of Intracoastal City to west of Morgan City Louisiana A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. DISCUSSION AND OUTLOOK ---------------------- At 400 PM CDT (2100 UTC), the center of Hurricane Laura was located near latitude 24.7 North, longitude 88.3 West. Laura is moving toward the west-northwest near 17 mph (28 km/h), and this general motion should continue tonight. A turn toward the northwest is forecast by Wednesday, and a northwestward to north-northwestward motion should continue through Wednesday night. On the forecast track, the center of Laura will move across the central Gulf of Mexico tonight and the northwestern Gulf of Mexico on Wednesday. The hurricane should approach the Upper Texas and Southwest Louisiana coasts on Wednesday night and move inland near those areas late Wednesday night or Thursday morning. Maximum sustained winds are near 80 mph (130 km/h) with higher gusts. Significant strengthening is forecast during the next 36 hours, and Laura is expected to be a major hurricane at landfall. Rapid weakening is expected after Laura makes landfall. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km). The estimated minimum central pressure is 990 mb (29.24 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Laura can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Sea Rim State Park TX to Intracoastal City LA including Sabine Lake and Calcasieu Lake...9-13 ft Intracoastal City to Morgan City including Vermilion Bay...7-11 ft Port Bolivar TX to Sea Rim State Park...6-9 ft Morgan City LA to Mouth of the Mississippi River...4-6 ft San Luis Pass TX to Port Bolivar...3-5 ft Galveston Bay...3-5 ft Freeport TX to San Luis Pass...2-4 ft Mouth of the Mississippi River to Ocean Springs MS including Lake Borgne...2-4 ft Lake Pontchartrain and Lake Maurepas...2-4 ft The deepest water will occur along the immediate coast near and to the right of the landfall location, where the surge will be accompanied by large and destructive waves. This storm surge could penetrate up to 30 miles inland from the immediate coastline in southwestern Louisiana and far southeastern Texas. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. RAINFALL: From Wednesday afternoon through Friday, Laura is expected to produce rainfall totals of 5 to 10 inches, with isolated maximum amounts of 15 inches across portions of the northwestern Gulf Coast from western Louisiana to far eastern Texas, and northward into much of Arkansas. Over the Lower to Middle Mississippi Valley from central Louisiana into western Tennessee and Kentucky, and southeastern Missouri, 2 to 4 inches of rainfall with isolated totals of 6 inches are expected. This rainfall will cause widespread flash and urban flooding, small streams to overflow their banks, and minor to isolated moderate river flooding. By late Friday into Saturday, portions of the Tennessee and Ohio Valley could see 2 to 4 inches with locally higher amounts as tropical moisture from Laura moves through the region. WIND: Hurricane conditions are expected in the hurricane warning area Wednesday night and Thursday. Tropical storm conditions are expected to reach the coast in the hurricane warning area late Wednesday or Wednesday night, and are expected in the tropical storm warning area Wednesday night and Thursday. Hurricane-force winds and damaging wind gusts are also expected to spread well inland into portions of eastern Texas and western Louisiana early Thursday. TORNADOES: A few tornadoes are expected Wednesday and Wednesday night over Louisiana, southeast Texas, and southwestern Mississippi. SURF: Swells generated by Laura are affecting portions of Cuba, the central Bahamas, and the Florida Keys. Swells are expected to spread northward along portions of the west coast of Florida peninsula and the coast of the Florida panhandle later today and tonight, and reach the northern and northwest Gulf coast by Wednesday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 700 PM CDT. Next complete advisory at 1000 PM CDT. $$ Forecaster Beven
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Hurricane Laura Public Advisory Number 23A
2020-08-25 19:41:18| National Hurricane Center (Atlantic)
Issued at 100 PM CDT Tue Aug 25 2020 756 WTNT33 KNHC 251741 TCPAT3 BULLETIN Hurricane Laura Intermediate Advisory Number 23A NWS National Hurricane Center Miami FL AL132020 100 PM CDT Tue Aug 25 2020 ...LAURA MOVING WEST-NORTHWESTWARD ACROSS THE SOUTHEASTERN GULF OF MEXICO... ...EXPECTED TO STRENGTHEN INTO A MAJOR HURRICANE BY WEDNESDAY NIGHT... SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...24.3N 87.6W ABOUT 525 MI...845 KM SE OF LAKE CHARLES LOUISIANA ABOUT 560 MI...900 KM SE OF GALVESTON TEXAS MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...WNW OR 295 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...990 MB...29.24 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * San Luis Pass Texas to the Mouth of the Mississippi River A Hurricane Warning is in effect for... * San Luis Pass Texas to Intracoastal City Louisiana A Tropical Storm Warning is in effect for... * Sargent Texas to San Luis Pass * East of Intracoastal City Louisiana to the Mouth of the Mississippi River A Storm Surge Watch is in effect for... * Freeport Texas to San Luis Pass * Mouth of the Mississippi River to Ocean Springs Mississippi * Lake Pontchartrain, Lake Maurepas, and Lake Borgne A Hurricane Watch is in effect for... * East of Intracoastal City to west of Morgan City Louisiana A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 100 PM CDT (1800 UTC), the center of Hurricane Laura was located near latitude 24.3 North, longitude 87.6 West. Laura is moving toward the west-northwest near 16 mph (26 km/h), and this general motion should continue today. A turn toward the northwest is forecast by Wednesday, and a northwestward to north-northwestward motion should continue through Wednesday night. On the forecast track, the center of Laura will move across the southeastern Gulf of Mexico today. Laura is then forecast to move over the central and northwestern Gulf of Mexico tonight and Wednesday, approach the Upper Texas and Southwest Louisiana coasts on Wednesday night and move inland near those area on Thursday. Maximum sustained winds are near 75 mph (120 km/h) with higher gusts. Significant strengthening is forecast during the next 36 hours, and Laura is expected to be a major hurricane at landfall. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km). The estimated minimum central pressure is 990 mb (29.24 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Laura can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Sea Rim State Park TX to Intracoastal City LA including Sabine Lake and Calcasieu Lake...9-13 ft Intracoastal City to Morgan City including Vermilion Bay...7-11 ft Port Bolivar TX to Sea Rim State Park...6-9 ft Morgan City LA to Mouth of the Mississippi River...4-6 ft San Luis Pass TX to Port Bolivar...3-5 ft Galveston Bay...3-5 ft Freeport TX to San Luis Pass...2-4 ft Mouth of the Mississippi River to Ocean Springs MS including Lake Borgne...3-5 ft Lake Pontchartrain and Lake Maurepas...2-4 ft The deepest water will occur along the immediate coast near and to the right of the landfall location, where the surge will be accompanied by large and destructive waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. RAINFALL: Laura is expected to produce the following storm total rainfall accumulations: Western Cuba...Additional totals of 1 inch or less. United States...From Wednesday night into Saturday, Laura is expected to produce rainfall of 4 to 8 inches, with isolated maximum amounts of 12 inches across portions of the west-central U.S. Gulf Coast from western Louisiana into east Texas, and northward into portions of the lower to middle Mississippi Valley, lower Ohio Valley, and Tennessee Valley. This rainfall will cause widespread flash and urban flooding, small streams to overflow their banks, and minor to isolated moderate river flooding. WIND: Hurricane conditions are expected in the hurricane warning area Wednesday night and Thursday. Tropical Storm conditions are expected to reach the coast in the hurricane warning area late Wednesday or Wednesday night, and are expected in the tropical storm warning area Wednesday night and Thursday. SURF: Swells generated by Laura are affecting portions of Cuba, the central Bahamas, and the Florida Keys. Swells are expected to spread northward along portions of the west coast of Florida peninsula and the coast of the Florida panhandle later today and tonight, and reach the northern and northwest Gulf coast by Wednesday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 400 PM CDT. $$ Forecaster Beven
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Hurricane Laura Public Advisory Number 23
2020-08-25 16:57:35| National Hurricane Center (Atlantic)
Issued at 1000 AM CDT Tue Aug 25 2020 000 WTNT33 KNHC 251457 TCPAT3 BULLETIN Hurricane Laura Advisory Number 23 NWS National Hurricane Center Miami FL AL132020 1000 AM CDT Tue Aug 25 2020 ...LAURA MOVING ACROSS THE SOUTHEASTERN GULF OF MEXICO... ...HURRICANE AND STORM SURGE WARNINGS ISSUED FOR THE NORTHWESTERN GULF COAST... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...23.7N 87.0W ABOUT 585 MI...940 KM SE OF LAKE CHARLES LOUISIANA ABOUT 620 MI...1000 KM SE OF GALVESTON TEXAS MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...990 MB...29.24 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: A Storm Surge Warning is in effect from San Luis Pass Texas to the Mouth of the Mississippi River, including areas inside the Port Arthur Hurricane Flood Protection system. A Hurricane Warning is in effect from San Luis Pass Texas to Intracoastal City Louisiana. A Tropical Storm Warning is in effect from Sargent Texas to San Luis Pass and from east of Intracoastal City to the Mouth of the Mississippi River. A Storm Surge Watch is in effect from Freeport Texas to San Luis Pass. The Tropical Storm Warning for the Dry Tortugas has been discontinued. The Tropical Storm Warning for Cuba has been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * San Luis Pass Texas to the Mouth of the Mississippi River A Hurricane Warning is in effect for... * San Luis Pass Texas to Intracoastal City Louisiana A Tropical Storm Warning is in effect for... * Sargent Texas to San Luis Pass * East of Intracoastal City Louisiana to the Mouth of the Mississippi River A Storm Surge Watch is in effect for... * Freeport Texas to San Luis Pass * Mouth of the Mississippi River to Ocean Springs Mississippi * Lake Pontchartrain, Lake Maurepas, and Lake Borgne A Hurricane Watch is in effect for... * East of Intracoastal City to west of Morgan City Louisiana A Storm Surge Warning means there is a danger of life-threatening inundation, from rising water moving inland from the coastline, during the next 36 hours in the indicated locations. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. This is a life-threatening situation. Persons located within these areas should take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions. Promptly follow evacuation and other instructions from local officials. A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1000 AM CDT (1500 UTC), the center of Hurricane Laura was located near latitude 23.7 North, longitude 87.0 West. Laura is moving toward the west-northwest near 16 mph (26 km/h), and this general motion should continue today. A turn toward the northwest is forecast by Wednesday, and a northwestward to north-northwestward motion should continue through Wednesday night. On the forecast track, the center of Laura will move across the southeastern Gulf of Mexico today. Laura is then forecast to move over the central and northwestern Gulf of Mexico tonight and Wednesday, approach the Upper Texas and Southwest Louisiana coasts on Wednesday night and move inland near those area on Thursday. Reports from NOAA and Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds are near 75 mph (120 km/h) with higher gusts. Significant strengthening is forecast during the next 36 hours, and Laura is expected to be a major hurricane at landfall. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km). The estimated minimum central pressure based on the Hurricane Hunter aircraft data is 990 mb (29.24 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Laura can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... Sea Rim State Park TX to Intracoastal City LA including Sabine Lake and Calcasieu Lake...9-13 ft Intracoastal City to Morgan City including Vermilion Bay...7-11 ft Port Bolivar TX to Sea Rim State Park...6-9 ft Morgan City LA to Mouth of the Mississippi River...4-6 ft San Luis Pass TX to Port Bolivar...3-5 ft Galveston Bay...3-5 ft Freeport TX to San Luis Pass...2-4 ft Mouth of the Mississippi River to Ocean Springs MS including Lake Borgne...3-5 ft Lake Pontchartrain and Lake Maurepas...2-4 ft The deepest water will occur along the immediate coast near and to the right of the landfall location, where the surge will be accompanied by large and destructive waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. RAINFALL: Laura is expected to produce the following storm total rainfall accumulations: Western Cuba...Additional totals of 1 inch or less. United States...From Wednesday night into Saturday, Laura is expected to produce rainfall of 4 to 8 inches, with isolated maximum amounts of 12 inches across portions of the west-central U.S. Gulf Coast from western Louisiana into east Texas, and northward into portions of the lower to middle Mississippi Valley, lower Ohio Valley, and Tennessee Valley. This rainfall will cause widespread flash and urban flooding, small streams to overflow their banks, and minor to isolated moderate river flooding. WIND: Hurricane conditions are expected in the hurricane warning area Wednesday night and Thursday. Tropical Storm conditions are expected to reach the coast in the hurricane warning area late Wednesday or Wednesday night, and are expected in the tropical storm warning area Wednesday night and Thursday. SURF: Swells generated by Laura are affecting portions of Cuba, the central Bahamas, and the Florida Keys. Swells are expected to spread northward along portions of the west coast of Florida peninsula and the coast of the Florida panhandle later today and tonight, and reach the northern and northwest Gulf coast by Wednesday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next intermediate advisory at 100 PM CDT. Next complete advisory at 400 PM CDT. $$ Forecaster Beven
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Hurricane Laura Forecast Advisory Number 23
2020-08-25 16:56:34| National Hurricane Center (Atlantic)
Issued at 1500 UTC TUE AUG 25 2020 000 WTNT23 KNHC 251456 TCMAT3 HURRICANE LAURA FORECAST/ADVISORY NUMBER 23 NWS NATIONAL HURRICANE CENTER MIAMI FL AL132020 1500 UTC TUE AUG 25 2020 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... A STORM SURGE WARNING IS IN EFFECT FROM SAN LUIS PASS TEXAS TO THE MOUTH OF THE MISSISSIPPI RIVER...INCLUDING AREAS INSIDE THE PORT ARTHUR HURRICANE FLOOD PROTECTION SYSTEM. A HURRICANE WARNING IS IN EFFECT FROM SAN LUIS PASS TEXAS TO INTRACOASTAL CITY LOUISIANA. A TROPICAL STORM WARNING IS IN EFFECT FROM SARGENT TEXAS TO SAN LUIS PASS AND FROM EAST OF INTRACOASTAL CITY TO THE MOUTH OF THE MISSISSIPPI RIVER. A STORM SURGE WATCH IS IN EFFECT FROM FREEPORT TEXAS TO SAN LUIS PASS. THE TROPICAL STORM WARNING FOR THE DRY TORTUGAS HAS BEEN DISCONTINUED. THE TROPICAL STORM WARNING FOR CUBA HAS BEEN DISCONTINUED. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * SAN LUIS PASS TEXAS TO THE MOUTH OF THE MISSISSIPPI RIVER A HURRICANE WARNING IS IN EFFECT FOR... * SAN LUIS PASS TEXAS TO INTRACOASTAL CITY LOUISIANA A TROPICAL STORM WARNING IS IN EFFECT FOR... * SARGENT TEXAS TO SAN LUIS PASS * EAST OF INTRACOASTAL CITY LOUISIANA TO THE MOUTH OF THE MISSISSIPPI RIVER A STORM SURGE WATCH IS IN EFFECT FOR... * FREEPORT TEXAS TO SAN LUIS PASS * MOUTH OF THE MISSISSIPPI RIVER TO OCEAN SPRINGS MISSISSIPPI * LAKE PONTCHARTRAIN...LAKE MAUREPAS...AND LAKE BORGNE A HURRICANE WATCH IS IN EFFECT FOR... * EAST OF INTRACOASTAL CITY TO WEST OF MORGAN CITY LOUISIANA A STORM SURGE WARNING MEANS THERE IS A DANGER OF LIFE-THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE COASTLINE...DURING THE NEXT 36 HOURS IN THE INDICATED LOCATIONS. FOR A DEPICTION OF AREAS AT RISK...PLEASE SEE THE NATIONAL WEATHER SERVICE STORM SURGE WATCH/WARNING GRAPHIC...AVAILABLE AT HURRICANES.GOV. THIS IS A LIFE-THREATENING SITUATION. PERSONS LOCATED WITHIN THESE AREAS SHOULD TAKE ALL NECESSARY ACTIONS TO PROTECT LIFE AND PROPERTY FROM RISING WATER AND THE POTENTIAL FOR OTHER DANGEROUS CONDITIONS. PROMPTLY FOLLOW EVACUATION AND OTHER INSTRUCTIONS FROM LOCAL OFFICIALS. A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED 36 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION. A STORM SURGE WATCH MEANS THERE IS A POSSIBILITY OF LIFE- THREATENING INUNDATION...FROM RISING WATER MOVING INLAND FROM THE COASTLINE...IN THE INDICATED LOCATIONS DURING THE NEXT 48 HOURS. A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. HURRICANE CENTER LOCATED NEAR 23.7N 87.0W AT 25/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 14 KT ESTIMATED MINIMUM CENTRAL PRESSURE 990 MB MAX SUSTAINED WINDS 65 KT WITH GUSTS TO 80 KT. 64 KT....... 40NE 0SE 0SW 0NW. 50 KT....... 60NE 60SE 40SW 40NW. 34 KT.......150NE 140SE 60SW 90NW. 12 FT SEAS..210NE 100SE 30SW 150NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 23.7N 87.0W AT 25/1500Z AT 25/1200Z CENTER WAS LOCATED NEAR 23.3N 86.3W FORECAST VALID 26/0000Z 24.6N 89.2W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 40NE 30SE 30SW 30NW. 50 KT... 60NE 60SE 40SW 40NW. 34 KT...150NE 140SE 60SW 100NW. FORECAST VALID 26/1200Z 26.0N 91.5W MAX WIND 90 KT...GUSTS 110 KT. 64 KT... 40NE 30SE 30SW 30NW. 50 KT... 60NE 60SE 40SW 40NW. 34 KT...140NE 130SE 60SW 100NW. FORECAST VALID 27/0000Z 28.0N 93.3W MAX WIND 100 KT...GUSTS 120 KT. 64 KT... 35NE 30SE 30SW 30NW. 50 KT... 60NE 60SE 50SW 50NW. 34 KT...130NE 120SE 60SW 100NW. FORECAST VALID 27/1200Z 30.5N 93.9W...INLAND MAX WIND 80 KT...GUSTS 100 KT. 64 KT... 30NE 30SE 20SW 20NW. 50 KT... 50NE 50SE 30SW 40NW. 34 KT...100NE 110SE 50SW 70NW. FORECAST VALID 28/0000Z 33.1N 93.6W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 30NE 40SE 30SW 30NW. FORECAST VALID 28/1200Z 35.2N 92.1W...INLAND MAX WIND 30 KT...GUSTS 40 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 29/1200Z 37.5N 83.5W...INLAND MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 30/1200Z 40.5N 69.5W...POST-TROP/EXTRATROP MAX WIND 40 KT...GUSTS 50 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.7N 87.0W INTERMEDIATE PUBLIC ADVISORY...WTNT33 KNHC/MIATCPAT3...AT 25/1800Z NEXT ADVISORY AT 25/2100Z $$ FORECASTER BEVEN
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Tropical Storm Laura Public Advisory Number 22A
2020-08-25 13:52:33| National Hurricane Center (Atlantic)
Issued at 700 AM CDT Tue Aug 25 2020 000 WTNT33 KNHC 251152 TCPAT3 BULLETIN Tropical Storm Laura Intermediate Advisory Number 22A NWS National Hurricane Center Miami FL AL132020 700 AM CDT Tue Aug 25 2020 ...LAURA NOW JUST BELOW HURRICANE STRENGTH... ...FORECAST TO BECOME A MAJOR HURRICANE OVER THE NORTHWESTERN GULF OF MEXICO ON WEDNESDAY... SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...23.4N 86.4W ABOUT 145 MI...235 KM NW OF THE WESTERN TIP OF CUBA ABOUT 625 MI...1005 KM SE OF LAKE CHARLES LOUISIANA MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 17 MPH...28 KM/H MINIMUM CENTRAL PRESSURE...991 MB...29.26 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Watch is in effect for... * San Luis Pass Texas to Ocean Springs Mississippi * Lake Pontchartrain, Lake Maurepas, and Lake Borgne A Hurricane Watch is in effect for... * San Luis Pass Texas to west of Morgan City Louisiana A Tropical Storm Warning is in effect for... * Cuban provinces of Villa Clara, Cienfuegos, Matanzas, Mayabeque, La Habana, Artemisa, Pinar del Rio, and the Isle of Youth * Dry Tortugas A Tropical Storm Watch is in effect for... * San Luis Pass to Freeport Texas * Morgan City Louisiana to the Mouth of the Mississippi River A Storm Surge Watch means there is a possibility of life- threatening inundation, from rising water moving inland from the coastline, in the indicated locations during the next 48 hours. For a depiction of areas at risk, please see the National Weather Service Storm Surge Watch/Warning Graphic, available at hurricanes.gov. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Hurricane and Storm Surge Warnings will likely be issued later today for portions of the Texas and Louisiana coasts. For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your local National Weather Service forecast office. For storm information specific to your area outside of the United States, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 700 AM CDT (1200 UTC), the center of Tropical Storm Laura was located near latitude 23.4 North, longitude 86.4 West. Laura is moving toward the west-northwest near 17 mph (28 km/h), and this general motion should continue today. A turn toward the northwest is forecast by Wednesday, and a northwestward to north-northwestward motion should continue through Wednesday night. On the forecast track, the center of Laura will move away from Cuba and over the southeastern Gulf of Mexico this morning. Laura is then forecast to move over the central and northwestern Gulf of Mexico tonight and Wednesday, approach the Upper Texas and Southwest Louisiana coasts on Wednesday night and move inland near those area on Thursday. Reports from a NOAA Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 70 mph (110 km/h) with higher gusts. Significant strengthening is forecast during the next 48 hours, and Laura is expected to be a major hurricane at landfall. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center. The minimum central pressure estimated from the Hurricane Hunter aircraft data is 991 mb (29.26 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Laura can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC. STORM SURGE: The combination of a dangerous storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters moving inland from the shoreline. The water could reach the following heights above ground somewhere in the indicated areas if the peak surge occurs at the time of high tide... High Island TX to Morgan City LA including Sabine Lake, Calcasieu Lake, and Vermilion Bay...7-11 ft Port Bolivar TX to High Island TX...4-6 ft Morgan City LA to Mouth of the Mississippi River...4-6 ft Mouth of the Mississippi River to Ocean Springs MS including Lake Borgne...3-5 ft San Luis Pass TX to Port Bolivar TX...2-4 ft Galveston Bay...2-4 ft Lake Pontchartrain and Lake Maurepas...2-4 ft The deepest water will occur along the immediate coast near and to the right of the landfall location, where the surge will be accompanied by large and destructive waves. Surge-related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances. For information specific to your area, please see products issued by your local National Weather Service forecast office. RAINFALL: Laura is expected to produce the following storm total rainfall accumulations: Rainfall will be coming to an end across western Cuba this morning with additional rainfall totals of 1 to 2 inches possible. From Wednesday afternoon into Saturday, Laura is expected to produce rainfall of 4 to 8 inches, with isolated maximum amounts of 12 inches across portions of the west-central U.S. Gulf Coast near the Texas and Louisiana border north into portions of the lower Mississippi Valley. This rainfall could cause widespread flash and urban flooding, small streams to overflow their banks, and minor to isolated moderate river flooding. WIND: Tropical storm conditions are expected to continue within the warning area in western Cuba during the next few hours. Tropical storm conditions are also expected for the Dry Tortugas for a few more hours. Hurricane conditions are possible in the hurricane watch area along the Gulf Coast by late Wednesday, with tropical storm conditions possible by Wednesday afternoon. SURF: Swells generated by Laura are affecting portions of Cuba, the central Bahamas, and the Florida Keys. Swells are expected to spread northward along portions of the west coast of Florida peninsula and the coast of the Florida panhandle later today and tonight, and reach the northern and northwest Gulf coast by Wednesday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1000 AM CDT. $$ Forecaster Beven
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