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Hurricane Laura Public Advisory Number 28A
2020-08-27 01:42:23| National Hurricane Center (Atlantic)
Issued at 700 PM CDT Wed Aug 26 2020 000 WTNT33 KNHC 262342 TCPAT3 BULLETIN Hurricane Laura Intermediate Advisory Number 28A NWS National Hurricane Center Miami FL AL132020 700 PM CDT Wed Aug 26 2020 ...WINDS INCREASING AS EXTREMELY DANGEROUS HURRICANE LAURA TAKES AIM AT THE NORTHWEST GULF COAST... ...CATASTROPHIC STORM SURGE, EXTREME WINDS, AND FLASH FLOODING EXPECTED ALONG THE NORTHWEST GULF COAST TONIGHT... SUMMARY OF 700 PM CDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...28.4N 92.9W ABOUT 120 MI...190 KM S OF LAKE CHARLES LOUISIANA ABOUT 120 MI...190 KM SSE OF PORT ARTHUR TEXAS MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H PRESENT MOVEMENT...NNW OR 330 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...940 MB...27.76 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Freeport 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 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 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. Preparations to protect life and property should be rushed to completion. A Hurricane Watch means that hurricane conditions are possible within the watch area. 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 700 PM CDT (0000 UTC), the eye of Hurricane Laura was located near latitude 28.4 North, longitude 92.9 West. Laura is moving toward the north-northwest near 15 mph (24 km/h). A turn toward the north is expected overnight, and a northward motion should continue on Thursday. A northeastward to east-northeastward motion is expected Thursday night and Friday. On the forecast track, Laura will approach the upper Texas and southwest Louisiana coasts this evening and move inland within that area tonight. The center of Laura is forecast to move over northwestern Louisiana tomorrow, across Arkansas Thursday night, and over the mid-Mississippi Valley on Friday. Reports from a NOAA Hurricane Hunter aircraft indicate that the maximum sustained winds have increased to near 150 mph (240 km/h) with higher gusts. Laura is an extremely dangerous category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some additional strengthening is possible tonight before Laura reaches the northwest Gulf coast overnight. Rapid weakening is expected after Laura moves inland. Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 205 miles (335 km). A sustained wind of 48 mph (78 km/h) was recently reported at Cypremort Point, Louisiana, on Vermilion Bay. The minimum central pressure estimated from NOAA Hurricane Hunter aircraft observations is 940 mb (27.76 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 and tropical-storm-force winds will arrive within the warning areas well in advance of Laura's center. All preparations to protect life and property should be rushed to completion in the next few hours. 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... Johnson Bayou LA to Rockefeller Wildlife Refuge including Calcasieu Lake...15-20 ft Sea Rim State Park TX to Johnson Bayou LA including Sabine Lake...10-15 ft Rockefeller Wildlife Refuge to Intracoastal City LA...10-15 ft Intracoastal City LA to Morgan City including Vermilion Bay...8-12 ft Port Bolivar TX to Sea Rim State Park...6-9 ft Morgan City LA to Mouth of the Mississippi River...4-7 ft Freeport TX to Port Bolivar including Galveston Bay...2-4 ft Mouth of the Mississippi River to Ocean Springs MS including Lake Borgne...1-3 ft Lake Pontchartrain and Lake Maurepas...1-3 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. Unsurvivable storm surge with large and destructive waves will cause catastrophic damage from Sea Rim State Park, Texas, to Intracoastal City, Louisiana, including Calcasieu and Sabine Lakes. This surge could penetrate up to 40 miles inland from the immediate coastline, and flood waters will not fully recede for several days after the storm. 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. WIND: Hurricane conditions are expected in the hurricane warning area tonight and Thursday, with catastrophic wind damage expected where Laura's eyewall moves onshore tonight. Tropical storm conditions are moving onshore along the coast of Louisiana within the tropical storm warning area and are expected to spread northwestward within the warning areas this evening. Hurricane-force winds and damaging wind gusts are also expected to spread well inland into portions of eastern Texas and western Louisiana early Thursday. RAINFALL: From this evening through Friday, Laura is expected to produce the following rainfall totals: Across the northwestern Gulf Coast from far southwest Louisiana and the Golden Triangle of Southeast Texas: 8 to 12 inches with isolated totals of 18 inches. Across central and the rest of western Louisiana into far eastern Texas: 5 to 10 inches with isolated totals of 15 inches. Across much of Arkansas: 3 to 7 inches with isolated totals of 10 inches. This rainfall will cause widespread flash and urban flooding, small streams and creeks to overflow their banks, and minor to moderate freshwater river flooding. By Friday into Saturday, Laura is expected to produce the following rainfall totals: Across the mid-Mississippi and portions of the Tennessee Valley, Lower Ohio Valley, and central Appalachians: 2 to 4 inches with isolated maximum amounts of 6 inches. This rainfall may lead to flash and urban flooding and rapid rises on small streams. Across the Mid-Atlantic Region: 1 to 3 inches. TORNADOES: Several tornadoes are expected this evening through tonight over Louisiana, far southeast Texas, and southwestern Mississippi. The risk for a few tornadoes will continue into Thursday across Louisiana, Arkansas, and western Mississippi. SURF: Swells produced by Laura are affecting the U.S. Gulf coast from the west coast of Florida to Texas and northeastern Mexico. 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 PM CDT. $$ Forecaster Pasch
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Hurricane Laura Public Advisory Number 28
2020-08-26 22:51:02| National Hurricane Center (Atlantic)
Issued at 400 PM CDT Wed Aug 26 2020 000 WTNT33 KNHC 262050 TCPAT3 BULLETIN Hurricane Laura Advisory Number 28 NWS National Hurricane Center Miami FL AL132020 400 PM CDT Wed Aug 26 2020 ...WIND AND WATER LEVELS INCREASING AS EXTREMELY DANGEROUS HURRICANE LAURA TAKES AIM AT THE NORTHWEST GULF COAST... ...CATASTROPHIC STORM SURGE, EXTREME WINDS, AND FLASH FLOODING EXPECTED ALONG THE NORTHWEST GULF COAST TONIGHT... SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...27.9N 92.8W ABOUT 155 MI...250 KM S OF LAKE CHARLES LOUISIANA ABOUT 155 MI...250 KM SSE OF PORT ARTHUR TEXAS MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H PRESENT MOVEMENT...NW OR 320 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...947 MB...27.97 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Storm Surge Watch has been discontinued east of the Mouth of the Mississippi River, including Lake Pontchartrain, Lake Maurepas, and Lake Borgne. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Freeport 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 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 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. Preparations to protect life and property should be rushed to completion. A Hurricane Watch means that hurricane conditions are possible within the watch area. 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 eye of Hurricane Laura was located near latitude 27.9 North, longitude 92.8 West. Laura is moving toward the northwest near 15 mph (24 km/h). A turn toward the north-northwest and north is expected tonight, and a northward motion should continue on Thursday. A northeastward to east- northeastward motion is expected Thursday night and Friday. On the forecast track, Laura will approach the Upper Texas and southwest Louisiana coasts this evening and move inland within that area tonight. The center of Laura is forecast to move over northwestern Louisiana tomorrow, across Arkansas Thursday night, and over the mid-Mississippi Valley on Friday. Reports from an Air Force Reserve hurricane hunter aircraft indicate that the maximum sustained winds have increased to near 145 mph (230 km/h) with higher gusts. Laura is an extremely dangerous category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some additional strengthening is possible this evening before Laura reaches the northwest Gulf coast overnight. Rapid weakening is expected after Laura moves inland. Hurricane-force winds extend outward up to 60 miles (95 km) from the center and tropical-storm-force winds extend outward up to 205 miles (335 km). The latest minimum central pressure reported by an Air Force Reserve reconnaissance aircraft is 947 mb (27.97 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 and tropical-storm-force winds will arrive within the warning areas well in advance of Laura's center. All preparations to protect life and property should be rushed to completion in the next few hours. 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... Johnson Bayou LA to Rockefeller Wildlife Refuge including Calcasieu Lake...15-20 ft Sea Rim State Park TX to Johnson Bayou LA including Sabine Lake...10-15 ft Rockefeller Wildlife Refuge to Intracoastal City LA...10-15 ft Intracoastal City LA to Morgan City including Vermilion Bay...8-12 ft Port Bolivar TX to Sea Rim State Park...6-9 ft Morgan City LA to Mouth of the Mississippi River...4-7 ft Freeport TX to Port Bolivar including Galveston Bay...2-4 ft Mouth of the Mississippi River to Ocean Springs MS including Lake Borgne...1-3 ft Lake Pontchartrain and Lake Maurepas...1-3 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. Unsurvivable storm surge with large and destructive waves will cause catastrophic damage from Sea Rim State Park, Texas, to Intracoastal City, Louisiana, including Calcasieu and Sabine Lakes. This surge could penetrate up to 40 miles inland from the immediate coastline, and flood waters will not fully recede for several days after the storm. 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. WIND: Hurricane conditions are expected in the hurricane warning area tonight and Thursday, with catastrophic wind damage expected where Laura's eyewall moves onshore tonight. Tropical storm conditions are moving onshore along the coast of Louisiana within the tropical storm warning area and are expected to spread northwestward within the warning areas this evening. Hurricane-force winds and damaging wind gusts are also expected to spread well inland into portions of eastern Texas and western Louisiana early Thursday. RAINFALL: From this afternoon through Friday, Laura is expected to produce the following rainfall totals: Across the northwestern Gulf Coast from far southwest Louisiana and the Golden Triangle of Southeast Texas: 8 to 12 inches with isolated totals of 18 inches. Across central and the rest of western Louisiana into far eastern Texas: 5 to 10 inches with isolated totals of 15 inches. Across much of Arkansas: 3 to 7 inches with isolated totals of 10 inches. This rainfall will cause widespread flash and urban flooding, small streams and creeks to overflow their banks, and minor to moderate freshwater river flooding. By Friday into Saturday, Laura is expected to produce the following rainfall totals: Across the mid-Mississippi and portions of the Tennessee Valley, Lower Ohio Valley, and central Appalachians: 2 to 4 inches with isolated maximum amounts of 6 inches. This rainfall may lead to flash and urban flooding and rapid rises on small streams. Across the Mid-Atlantic Region: 1 to 3 inches. TORNADOES: Several tornadoes are expected late this afternoon through tonight over Louisiana, far southeast Texas, and southwestern Mississippi. The risk for a few tornadoes will continue into Thursday across Louisiana, Arkansas, and western Mississippi. SURF: Swells produced by Laura are affecting the U.S. Gulf coast from the west coast of Florida to Texas and northeastern Mexico. 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. Hourly Tropical Cyclone Updates will be issued between Public advisories. These can be found under WMO header WTNT63 KNHC and under AWIPS header MIATCUAT3. $$ Forecaster Brown
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Tropical Storm Iselle Public Advisory Number 2
2020-08-26 22:46:58| National Hurricane Center (East Pacific)
Issued at 200 PM PDT Wed Aug 26 2020 000 WTPZ34 KNHC 262046 TCPEP4 BULLETIN Tropical Storm Iselle Advisory Number 2 NWS National Hurricane Center Miami FL EP142020 200 PM PDT Wed Aug 26 2020 ...DEPRESSION INTENSIFIES AND BECOMES TROPICAL STORM ISELLE... ...EXPECTED TO REMAIN WELL OFFSHORE OF MEXICO... SUMMARY OF 200 PM PDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...15.5N 116.8W ABOUT 680 MI...1095 KM SW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NE OR 50 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 PM PDT (2100 UTC), the center of Tropical Storm Iselle was located near latitude 15.5 North, longitude 116.8 West. Iselle is moving toward the northeast near 5 mph (7 km/h) and this motion is expected to continue through Friday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Little change in strength is forecast during the next few days. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 800 PM PDT. $$ Forecaster Latto
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Tropical Storm Hernan Public Advisory Number 3
2020-08-26 22:42:31| National Hurricane Center (East Pacific)
Issued at 400 PM CDT Wed Aug 26 2020 000 WTPZ33 KNHC 262042 TCPEP3 BULLETIN Tropical Storm Hernan Advisory Number 3 NWS National Hurricane Center Miami FL EP132020 400 PM CDT Wed Aug 26 2020 ...DEPRESSION STRENGTHENS AND BECOMES TROPICAL STORM HERNAN... ...FORECAST TO STAY OFFSHORE OF MEXICO... SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...17.7N 105.8W ABOUT 185 MI...300 KM S OF CABO CORRIENTES MEXICO ABOUT 445 MI...720 KM SE OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NE OR 40 DEGREES AT 6 MPH...9 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 400 PM CDT (2100 UTC), the center of Tropical Storm Hernan was located near latitude 17.7 North, longitude 105.8 West. Hernan is moving toward the northeast near 6 mph (9 km/h). A turn toward the north is expected tonight, followed by a turn toward the northwest on Thursday. The system is then expected to turn toward the west-northwest on Friday. On the forecast track, the center of the tropical cyclone, along with the strongest winds and heaviest rains, is expected to remain just offshore of the southwestern coast of Mexico. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Little change in strength is forecast during the next day or so. A weakening trend is expected to begin late Thursday night, and Hernan is forecast to become a remnant low Friday night. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 1000 PM CDT. $$ Forecaster Latto
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Tropical Depression Thirteen-E Public Advisory Number 2
2020-08-26 16:52:58| National Hurricane Center (East Pacific)
Issued at 900 AM MDT Wed Aug 26 2020 000 WTPZ33 KNHC 261452 CCA TCPEP3 BULLETIN Tropical Depression Thirteen-E Advisory Number 2...CORRECTED NWS National Hurricane Center Miami FL EP132020 900 AM MDT Wed Aug 26 2020 CORRECTED ADIVSORY NUMBER ...POORLY ORGANIZED DEPRESSION DRIFTING EAST-NORTHEASTWARD OFFSHORE THE COAST OF SOUTHWESTERN MEXICO... SUMMARY OF 900 AM MDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...17.3N 106.1W ABOUT 215 MI...345 KM S OF CABO CORRIENTES MEXICO ABOUT 460 MI...740 KM SSE OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...ENE OR 65 DEGREES AT 2 MPH...4 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 900 AM MDT (1500 UTC), the center of Tropical Depression Thirteen-E was located near latitude 17.3 North, longitude 106.1 West. The depression is temporarily drifting toward the east-northeast near 2 mph (4 km/h), and a turn toward the north-northeast is forecast later today. A turn toward the north-northwest is expected on Thursday followed by a turn toward the west-northwest on Friday. On the forecast track, the center of the tropical cyclone, along with the strongest winds and heaviest rains, is expected to remain just offshore the southwestern coast of Mexico. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Slight strengthening is forecast during the next 48 hours, and the depression could become a tropical storm on Thursday. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 300 PM MDT. $$ Forecaster Roberts
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