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Tropical Storm Nicholas Forecast Advisory Number 7
2021-09-13 22:38:45| National Hurricane Center (Atlantic)
Issued at 2100 UTC MON SEP 13 2021 000 WTNT24 KNHC 132038 TCMAT4 TROPICAL STORM NICHOLAS FORECAST/ADVISORY NUMBER 7 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142021 2100 UTC MON SEP 13 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED SOUTH OF BAFFIN BAY TEXAS. THE STORM SURGE WATCH FROM BAFFIN BAY TO PORT ARANSAS, TEXAS INCLUDING CORPUS CHRISTI BAY HAS BEEN DISCONTINUED. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * PORT ARANSAS TEXAS TO SABINE PASS * GALVESTON BAY...ARANSAS BAY...SAN ANTONIO BAY...AND MATAGORDA BAY A HURRICANE WATCH IS IN EFFECT FOR... * PORT ARANSAS TO SAN LUIS PASS TEXAS A TROPICAL STORM WARNING IS IN EFFECT FOR... * BAFFIN BAY TO SABINE PASS A STORM SURGE WATCH IS IN EFFECT FOR... * SABINE PASS TO RUTHERFORD BEACH 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 TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. 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. INTERESTS ELSEWHERE IN SOUTHWESTERN LOUISIANA SHOULD MONITOR THE PROGRESS OF NICHOLAS. TROPICAL STORM CENTER LOCATED NEAR 27.4N 96.4W AT 13/2100Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHEAST OR 15 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT. 50 KT....... 30NE 0SE 0SW 0NW. 34 KT.......100NE 80SE 0SW 0NW. 12 FT SEAS..105NE 60SE 0SW 0NW. 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 27.4N 96.4W AT 13/2100Z AT 13/1800Z CENTER WAS LOCATED NEAR 26.9N 96.5W FORECAST VALID 14/0600Z 28.7N 96.1W...ON THE COAST MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 50NE 30SE 0SW 0NW. 34 KT...100NE 100SE 30SW 30NW. FORECAST VALID 14/1800Z 29.9N 95.3W...INLAND MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 80NE 100SE 20SW 20NW. FORECAST VALID 15/0600Z 30.4N 94.4W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 15/1800Z 30.9N 92.9W...INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 16/0600Z 31.1N 91.4W...INLAND MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 16/1800Z 32.0N 90.6W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 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 17/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 27.4N 96.4W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 14/0000Z NEXT ADVISORY AT 14/0300Z $$ FORECASTER STEWART
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Tropical Storm Nicholas Public Advisory Number 6A
2021-09-13 20:00:09| National Hurricane Center (Atlantic)
Issued at 100 PM CDT Mon Sep 13 2021 000 WTNT34 KNHC 131800 TCPAT4 BULLETIN Tropical Storm Nicholas Intermediate Advisory Number 6A NWS National Hurricane Center Miami FL AL142021 100 PM CDT Mon Sep 13 2021 ...NICHOLAS MOVING ERRATICALLY NORTHWARD JUST OFFSHORE THE SOUTHERN COAST OF TEXAS... ...FLASH FLOODING, DANGEROUS STORM SURGE, AND GUSTY WINDS EXPECTED ALONG PORTIONS OF THE SOUTHERN AND MIDDLE TEXAS COASTS TODAY... SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...26.9N 96.5W ABOUT 70 MI...115 KM SSE OF PORT ARANSAS TEXAS ABOUT 105 MI...165 KM S OF PORT OCONNOR TEXAS MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...N OR 10 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Port Aransas Texas to Sabine Pass * Galveston Bay, Aransas Bay, San Antonio Bay, and Matagorda Bay A Hurricane Watch is in effect for... * Port Aransas to San Luis Pass Texas A Tropical Storm Warning is in effect for... * Mouth of the Rio Grande to Sabine Pass A Storm Surge Watch is in effect for... * Baffin Bay to Port Aransas Texas * Sabine Pass to Rutherford Beach Louisiana * Corpus Christi Bay 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 Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. 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. Interests elsewhere in southwestern Louisiana should monitor the progress of Nicholas. 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 Tropical Storm Nicholas was located by NOAA Doppler weather radars near latitude 26.9 North, longitude 96.5 West. Nicholas is moving toward the north near 12 mph (19 km/h) and this general motion is expected to continue through tonight, followed by a turn toward the north-northeast on Tuesday. On the forecast track, the center of Nicholas will continue to pass just offshore of the coast of south Texas this afternoon and move onshore along the coast of central Texas later this evening. Data from an Air Force Reserve reconnaissance aircraft and NOAA Doppler weather radars indicate that maximum sustained winds remain near 60 mph (95 km/h) with higher gusts. Strengthening is forecast this afternoon and evening, and Nicholas could be near hurricane strength when it reaches the northwest Gulf coast. Weakening is anticipated on Tuesday and Wednesday while Nicholas moves over land. Tropical-storm-force winds extend outward up to 115 miles (185 km) from the center. During the past few hours, NOAA buoy 42020 located southeast of Corpus Christi, Texas, reported a sustained wind of 49 mph (80 km/h) and a gust to 56 mph (91 km/h). The estimated minimum central pressure is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Nicholas can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC and on the web at hurricanes.gov/graphics_at4.shtml?key_messages RAINFALL: Nicholas is expected to produce storm total rainfall of 8 to 16 inches, with isolated maximum amounts of 20 inches, across portions of the middle and upper Texas coastal areas through the middle of the week. Life-threatening, flash and urban flooding impacts are possible, especially across portions of the upper Texas Gulf Coast near Lake Jackson and Freeport, TX Across the rest of southeast Texas into southwest Louisiana rainfall of 5 to 10 inches is expected. This rainfall may produce areas of considerable flash and urban flooding, especially in highly urbanized metropolitan areas. Additionally, there is the potential for isolated minor to moderate river flooding. 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... Port O'Connor to San Luis Pass TX including Matagorda Bay...3-5 ft San Luis Pass, TX to Rutherford Beach, LA including Galveston Bay...2-4 ft Baffin Bay to Port O'Connor, TX...2-4 ft Corpus Christi Bay, Aransas Bay and San Antonio Bay...2-4 ft Mouth of the Rio Grande to Baffin Bay...1-3 ft Rutherford Beach, LA to Intracoastal City, LA...1-3 ft Sabine Lake and Calcasieu Lake...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous 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. WIND: Tropical storm conditions are expected within the warning area in southern Texas through the next few hours. These conditions will spread northward within the warning area through tonight, making outside preparations difficult or dangerous. Hurricane conditions are possible in the Hurricane Watch area as early as this afternoon or this evening. TORNADOES: A couple of tornadoes are possible this afternoon and tonight across the middle and upper Texas coast. SURF: Swells generated by Nicholas will continue affecting portions of the northwest Gulf coast through Tuesday. 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 Stewart
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Tropical Storm Nicholas Public Advisory Number 6
2021-09-13 16:36:02| National Hurricane Center (Atlantic)
Issued at 1000 AM CDT Mon Sep 13 2021 000 WTNT34 KNHC 131435 TCPAT4 BULLETIN Tropical Storm Nicholas Advisory Number 6 NWS National Hurricane Center Miami FL AL142021 1000 AM CDT Mon Sep 13 2021 ...NICHOLAS MOVING ERRATICALLY NORTHWARD JUST OFFSHORE THE SOUTHERN COAST OF TEXAS... ...FLASH FLOODING, DANGEROUS STORM SURGE, AND GUSTY WINDS EXPECTED ALONG PORTIONS OF THE SOUTHERN AND MIDDLE TEXAS COASTS TODAY... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...26.4N 96.8W ABOUT 45 MI...70 KM NE OF MOUTH OF THE RIO GRANDE ABOUT 140 MI...225 KM S OF PORT OCONNOR TEXAS MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...N OR 5 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Storm Surge Warning has been extended from San Luis Pass to Sabine Pass including Galveston Bay. The Hurricane Watch has been extended northeastward to San Luis Pass, Texas. The Tropical Storm Warning has been extended eastward to Sabine Pass. The Storm Surge Watch from the Mouth of the Rio Grande to Baffin Bay has been discontinued. The government of Mexico has discontinued the Tropical Storm Warning from Barra el Mezquital to the U.S./Mexico border. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Port Aransas Texas to Sabine Pass * Galveston Bay, Aransas Bay, San Antonio Bay, and Matagorda Bay A Hurricane Watch is in effect for... * Port Aransas to San Luis Pass Texas A Tropical Storm Warning is in effect for... * Mouth of the Rio Grande to Sabine Pass A Storm Surge Watch is in effect for... * Baffin Bay to Port Aransas Texas * Sabine Pass to Rutherford Beach Louisiana * Corpus Christi Bay 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 Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. 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. Interests elsewhere in southwestern Louisiana should monitor the progress of Nicholas. 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 Tropical Storm Nicholas was located by NOAA Doppler weather radars and an Air Force Reserve reconnaissance aircraft near latitude 26.4 North, longitude 96.8 West. Nicholas is moving toward the north near 12 mph (19 km/h) and this general motion is expected to continue today, followed by a turn toward the north-northeast on Tuesday. On the forecast track, the center of Nicholas will pass near or just offshore of the coast of south Texas this morning and move onshore along the coast of south or central Texas late this afternoon or this evening. Data from the reconnaissance aircraft indicate that maximum sustained winds remain near 60 mph (95 km/h) with higher gusts. Strengthening is forecast today, and Nicholas could reach the northwest Gulf coast as a hurricane. Weakening is anticipated on Tuesday and Wednesday while Nicholas moves over land. Tropical-storm-force winds extend outward up to 115 miles (185 km) from the center. NOAA buoy 42020 located southeast of Corpus Christi, Texas, recently reported a sustained wind of 40 mph (65 km/h). The minimum central pressure recently measured by the aircraft is 1002 mb (29.59 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Nicholas can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC and on the web at hurricanes.gov/graphics_at4.shtml?key_messages RAINFALL: Nicholas is expected to produce storm total rainfall of 8 to 16 inches, with isolated maximum amounts of 20 inches, across portions of the middle and upper Texas coastal areas through the middle of the week. Life-threatening, flash and urban flooding impacts are possible, especially across portions of the upper Texas Gulf Coast near Lake Jackson and Freeport, TX Across the rest of southeast Texas into southwest Louisiana rainfall of 5 to 10 inches is expected. This rainfall may produce areas of considerable flash and urban flooding, especially in highly urbanized metropolitan areas. Additionally, there is the potential for isolated minor to moderate river flooding. 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... Port O'Connor to San Luis Pass TX including Matagorda Bay...3-5 ft San Luis Pass, TX to Rutherford Beach, LA including Galveston Bay...2-4 ft Baffin Bay to Port O'Connor, TX...2-4 ft Corpus Christi Bay, Aransas Bay and San Antonio Bay...2-4 ft Mouth of the Rio Grande to Baffin Bay...1-3 ft Rutherford Beach, LA to Intracoastal City, LA...1-3 ft Sabine Lake and Calcasieu Lake...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous 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. WIND: Tropical storm conditions are expected within the warning area in southern Texas through the next few hours. These conditions will spread northward within the warning area through tonight, making outside preparations difficult or dangerous. Hurricane conditions are possible in the Hurricane Watch area as early as this afternoon or this evening. TORNADOES: A couple of tornadoes are possible this afternoon and tonight across the middle and upper Texas coast. SURF: Swells generated by Nicholas will continue affecting portions of the northwest Gulf coast through Tuesday. 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 Stewart
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Tropical Storm Nicholas Forecast Advisory Number 6
2021-09-13 16:35:34| National Hurricane Center (Atlantic)
Issued at 1500 UTC MON SEP 13 2021 000 WTNT24 KNHC 131435 TCMAT4 TROPICAL STORM NICHOLAS FORECAST/ADVISORY NUMBER 6 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142021 1500 UTC MON SEP 13 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE STORM SURGE WARNING HAS BEEN EXTENDED FROM SAN LUIS PASS TO SABINE PASS...INCLUDING GALVESTON BAY. THE HURRICANE WATCH HAS BEEN EXTENDED NORTHEASTWARD TO SAN LUIS PASS TEXAS. THE TROPICAL STORM WARNING HAS BEEN EXTENDED EASTWARD TO SABINE PASS. THE STORM SURGE WATCH FROM THE MOUTH OF THE RIO GRANDE TO BAFFIN BAY HAS BEEN DISCONTINUED. THE GOVERNMENT OF MEXICO HAS DISCONTINUED THE TROPICAL STORM WARNING FROM BARRA EL MEZQUITAL TO THE U.S./MEXICO BORDER. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WARNING IS IN EFFECT FOR... * PORT ARANSAS TEXAS TO SABINE PASS * GALVESTON BAY...ARANSAS BAY...SAN ANTONIO BAY...AND MATAGORDA BAY A HURRICANE WATCH IS IN EFFECT FOR... * PORT ARANSAS TO SAN LUIS PASS TEXAS A TROPICAL STORM WARNING IS IN EFFECT FOR... * MOUTH OF THE RIO GRANDE TO SABINE PASS A STORM SURGE WATCH IS IN EFFECT FOR... * BAFFIN BAY TO PORT ARANSAS TEXAS * SABINE PASS TO RUTHERFORD BEACH LOUISIANA * CORPUS CHRISTI BAY 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 TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. 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. INTERESTS ELSEWHERE IN SOUTHWESTERN LOUISIANA SHOULD MONITOR THE PROGRESS OF NICHOLAS. TROPICAL STORM CENTER LOCATED NEAR 26.4N 96.8W AT 13/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTH OR 5 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1002 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 30NE 0SE 0SW 0NW. 34 KT.......100NE 80SE 0SW 0NW. 12 FT SEAS.. 60NE 30SE 0SW 0NW. 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 26.4N 96.8W AT 13/1500Z AT 13/1200Z CENTER WAS LOCATED NEAR 25.4N 96.9W FORECAST VALID 14/0000Z 27.5N 96.7W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 50NE 20SE 0SW 0NW. 34 KT...120NE 100SE 30SW 30NW. FORECAST VALID 14/1200Z 29.1N 96.3W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT...100NE 100SE 20SW 20NW. FORECAST VALID 15/0000Z 30.2N 95.4W...INLAND MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 15/1200Z 31.0N 94.0W...INLAND MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 16/0000Z 31.5N 92.5W...INLAND MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 16/1200Z 32.0N 91.1W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 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 17/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 26.4N 96.8W INTERMEDIATE PUBLIC ADVISORY...WTNT34 KNHC/MIATCPAT4...AT 13/1800Z NEXT ADVISORY AT 13/2100Z $$ FORECASTER STEWART
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Tropical Storm Nicholas Public Advisory Number 5
2021-09-13 10:49:27| National Hurricane Center (Atlantic)
Issued at 400 AM CDT Mon Sep 13 2021 000 WTNT34 KNHC 130849 TCPAT4 BULLETIN Tropical Storm Nicholas Advisory Number 5 NWS National Hurricane Center Miami FL AL142021 400 AM CDT Mon Sep 13 2021 ...NICHOLAS FORECAST TO CAUSE FLASH FLOODING, DANGEROUS STORM SURGE AND GUSTY WINDS LATER TODAY... SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...25.5N 96.6W ABOUT 45 MI...75 KM SE OF MOUTH OF THE RIO GRANDE ABOUT 200 MI...325 KM S OF PORT OCONNOR TEXAS MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...NNW OR 345 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * Port Aransas to San Luis Pass Texas * Aransas Bay, San Antonio Bay, and Matagorda Bay A Hurricane Watch is in effect for... * Port Aransas to Freeport Texas A Tropical Storm Warning is in effect for... * Mouth of the Rio Grande to High Island Texas * Barra el Mezquital to the U.S./Mexico border A Storm Surge Watch is in effect for... * Mouth of the Rio Grande to Port Aransas Texas * San Luis Pass Texas to Rutherford Beach Louisiana, including Galveston Bay * Baffin Bay and Corpus Christi Bay A Tropical Storm Watch is in effect for... * East of High Island Texas to Sabine Pass 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 Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. 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 Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere along the upper Texas coast and southwestern Louisiana should monitor the progress of this system. 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 400 AM CDT (0900 UTC), the center of Tropical Storm Nicholas was located near latitude 25.5 North, longitude 96.6 West. Nicholas is moving toward the north-northwest near 14 mph (22 km/h). The storm should turn northward later today and north-northeastward on Tuesday. On the forecast track, the center of Nicholas will pass near or just offshore the coasts of northeastern Mexico and south Texas this morning, and move onshore along the coast of south or central Texas Monday afternoon or evening. Maximum sustained winds remain near 60 mph (95 km/h) with higher gusts. Strengthening is forecast today, and Nicholas could reach the northwest Gulf coast as a hurricane. Weakening is anticipated on Tuesday and Wednesday over land. Tropical-storm-force winds extend outward up to 115 miles (185 km) from the center. The estimated minimum central pressure is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Nicholas can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC and on the web at hurricanes.gov/graphics_at4.shtml?key_messages RAINFALL: Nicholas is expected to produce storm total rainfall of 8 to 16 inches, with isolated maximum amounts of 20 inches, across portions of the middle and upper Texas coastal areas through the middle of the week. Across the rest of coastal Texas into southwest Louisiana rainfall of 5 to 10 inches is expected. This rainfall may produce areas of considerable flash and urban flooding, especially in highly urbanized metropolitan areas. Additionally, there is the potential for isolated minor to moderate river flooding. 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... Port O'Connor to San Luis Pass TX including Matagorda Bay... 3-5 ft San Luis Pass, TX to Rutherford Beach, LA including Galveston Bay...2-4 ft Mouth of the Rio Grande to Port O'Connor, TX...2-4 ft Baffin Bay, Corpus Christi Bay, Aransas Bay and San Antonio Bay...2-4 ft Rutherford Beach, LA to Intracoastal City, LA...1-3 ft Sabine Lake and Calcasieu Lake...1-3 ft The deepest water will occur along the immediate coast in areas of onshore winds, where the surge will be accompanied by large and dangerous 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. WIND: Tropical storm conditions are expected to first reach the coast within the warning area in northeastern Mexico and southern Texas this morning, making outside preparations difficult or dangerous. These conditions will spread northward within the warning area through tonight. Hurricane conditions are possible in the Hurricane Watch area as early as this afternoon. Tropical storm conditions are possible within the watch area by tonight or early Tuesday. TORNADOES: A tornado or two will be possible today into tonight across the Texas coast. SURF: Swells generated by Nicholas will continue affecting portions of the northwest Gulf coast through Tuesday. 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 AM CDT. Next complete advisory at 1000 AM CDT. $$ Forecaster Blake
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