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Hurricane Grace Public Advisory Number 31
2021-08-21 04:58:18| National Hurricane Center (Atlantic)
Issued at 1000 PM CDT Fri Aug 20 2021 000 WTNT32 KNHC 210258 TCPAT2 BULLETIN Hurricane Grace Advisory Number 31 NWS National Hurricane Center Miami FL AL072021 1000 PM CDT Fri Aug 20 2021 ...GRACE RAPIDLY INTENSIFIES INTO A MAJOR HURRICANE... ...LANDFALL EXPECTED IN MAINLAND MEXICO LATER TONIGHT... SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...20.7N 96.3W ABOUT 75 MI...120 KM ESE OF TUXPAN MEXICO ABOUT 105 MI...165 KM N OF VERACRUZ MEXICO MAXIMUM SUSTAINED WINDS...120 MPH...195 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...967 MB...28.56 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * The coast of mainland Mexico from Puerto Veracruz to Cabo Rojo A Tropical Storm Warning is in effect for... * The coast of mainland Mexico from north of Cabo Rojo to Barra del Tordo A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. Preparations to protect life and property should have already been completed. A Tropical Storm Warning means that tropical storm conditions are expected somewhere withing the warning area. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1000 PM CDT (0300 UTC), the center of Hurricane Grace was located near latitude 20.7 North, longitude 96.3 West. Grace is moving toward the west near 10 mph (17 km/h) and this general motion is expected to continue through landfall. On the forecast track, the center of Grace is forecast to make landfall along the coast of mainland Mexico within the hurricane warning area later tonight. Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 120 mph (195 km/h) with higher gusts, making Grace a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some additional strengthening is possible until Grace makes landfall, with rapid weakening expected as Grace moves inland over the mountains of central Mexico. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The estimated minimum central pressure from reconnaissance aircraft data is 967 mb (28.56 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Grace can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2, WMO header WTNT42 KNHC and on the web at www.hurricanes.gov/graphics_at2.shtml?key_messages. STORM SURGE: A dangerous storm surge will raise water levels by as much as 6 to 9 ft above normal tide levels along the immediate coast within the hurricane warning area near and north of where the center makes landfall tonight. Near the coast, the surge will be accompanied by large and destructive waves. WIND: Hurricane conditions are expected within portions of the hurricane warning area in mainland Mexico tonight, with tropical storm conditions already occuring. Tropical storm conditions are expected to continue within the tropical storm warning area in mainland Mexico through tomorrow morning. RAINFALL: Grace is expected to produce the following rainfall amounts: Over Veracruz, Puebla, Tlaxcala, Hidalgo, Queretaro, and eastern San Luis Potosi...6 to 12 inches of rain with isolated maximum totals of 18 inches are expected today through Sunday. Heavy rainfall from Grace will result in significant flash and urban flooding as well as mudslides. SURF: High surf generated by Grace will affect the southern Gulf of Mexico coastline today and continue into the weekend. 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 AM CDT. Next complete advisory at 400 AM CDT. $$ Forecaster Papin/Beven
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Hurricane Grace Forecast Advisory Number 31
2021-08-21 04:56:49| National Hurricane Center (Atlantic)
Issued at 0300 UTC SAT AUG 21 2021 000 WTNT22 KNHC 210256 TCMAT2 HURRICANE GRACE FORECAST/ADVISORY NUMBER 31 NWS NATIONAL HURRICANE CENTER MIAMI FL AL072021 0300 UTC SAT AUG 21 2021 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WARNING IS IN EFFECT FOR... * THE COAST OF MAINLAND MEXICO FROM PUERTO VERACRUZ TO CABO ROJO A TROPICAL STORM WARNING IS IN EFFECT FOR... * THE COAST OF MAINLAND MEXICO FROM NORTH OF CABO ROJO TO BARRA DEL TORDO A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHING THE WARNING AREA. HURRICANE CENTER LOCATED NEAR 20.7N 96.3W AT 21/0300Z POSITION ACCURATE WITHIN 10 NM PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 967 MB EYE DIAMETER 30 NM MAX SUSTAINED WINDS 105 KT WITH GUSTS TO 115 KT. 64 KT....... 25NE 20SE 20SW 25NW. 50 KT....... 50NE 30SE 30SW 50NW. 34 KT.......130NE 90SE 70SW 100NW. 12 FT SEAS..240NE 120SE 60SW 210NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 20.7N 96.3W AT 21/0300Z AT 21/0000Z CENTER WAS LOCATED NEAR 20.7N 95.7W FORECAST VALID 21/1200Z 20.3N 97.9W...INLAND MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 15NE 0SE 0SW 0NW. 50 KT... 40NE 20SE 0SW 20NW. 34 KT... 80NE 60SE 0SW 50NW. FORECAST VALID 22/0000Z 20.0N 100.9W...INLAND MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 40NE 0SE 0SW 40NW. FORECAST VALID 22/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.7N 96.3W INTERMEDIATE PUBLIC ADVISORY...WTNT32 KNHC/MIATCPAT2...AT 21/0600Z NEXT ADVISORY AT 21/0900Z $$ FORECASTER PAPIN/BEVEN
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Hurricane Grace Public Advisory Number 30A
2021-08-21 02:52:22| National Hurricane Center (Atlantic)
Issued at 700 PM CDT Fri Aug 20 2021 000 WTNT32 KNHC 210051 CCA TCPAT2 BULLETIN Hurricane Grace Intermediate Advisory Number 30A...Corrected NWS National Hurricane Center Miami FL AL072021 700 PM CDT Fri Aug 20 2021 Corrected wind speed in km/h for summary and discussion section ...AIR FORCE RECONNAISSANCE AIRCRAFT FINDS GRACE INTENSIFYING... ...LANDFALL ALONG EASTERN MAINLAND MEXICO EXPECTED LATER TONIGHT... SUMMARY OF 700 PM CDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...20.7N 95.7W ABOUT 105 MI...170 KM E OF TUXPAN MEXICO ABOUT 105 MI...170 KM NNE OF VERACRUZ MEXICO MAXIMUM SUSTAINED WINDS...100 MPH...160 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...967 MB...28.55 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * The coast of mainland Mexico from Puerto Veracruz to Cabo Rojo A Tropical Storm Warning is in effect for... * The coast of mainland Mexico from north of Cabo Rojo to Barra del Tordo A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area, in this case within 12 to 24 hours. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere withing the warning area, in this case within 12 to 24 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 700 PM CDT (0000 UTC), the center of Hurricane Grace was located near latitude 20.7 North, longitude 95.7 West. Grace is moving toward the west near 10 mph (17 km/h), and this general motion is expected to continue through landfall. On the forecast track, the center of Grace is forecast to move across the southwestern Gulf of Mexico this evening, and then make landfall along the coast of mainland Mexico within the hurricane warning area tonight. Maximum sustained winds have increased to near 100 mph (160 km/h) with higher gusts. Strengthening is forecast until Grace makes landfall, with rapid weakening expected as Grace moves inland over the mountains of central Mexico. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 185 miles (295 km). The estimated minimum central pressure recently measured by Air Force Reserve Reconnaissance Aircraft is 967 mb (28.55 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Grace can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2, WMO header WTNT42 KNHC and on the web at www.hurricanes.gov/graphics_at2.shtml?key_messages. STORM SURGE: A dangerous storm surge will raise water levels by as much as 4 to 6 ft above normal tide levels along the immediate coast within the hurricane warning area near and north of where the center makes landfall tonight. Near the coast, the surge will be accompanied by large and destructive waves. WIND: Hurricane conditions are expected within portions of the hurricane warning area in mainland Mexico tonight, with tropical storm conditions expected within the next few hours. Tropical storm conditions are expected within the tropical storm warning area in mainland Mexico by this evening. RAINFALL: Grace is expected to produce the following rainfall amounts: Over Veracruz, Puebla, Tlaxcala, Hidalgo, Queretaro, and eastern San Luis Potosi...6 to 12 inches of rain with isolated maximum totals of 18 inches are expected today through Sunday. Heavy rainfall from Grace will result in significant flash and urban flooding as well as mudslides. SURF: High surf generated by Grace will affect the southern Gulf of Mexico coastline today and continue into the weekend. 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 Papin/Beven
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Hurricane Grace Public Advisory Number 30A
2021-08-21 02:00:15| National Hurricane Center (Atlantic)
Issued at 700 PM CDT Fri Aug 20 2021 000 WTNT32 KNHC 210000 TCPAT2 BULLETIN Hurricane Grace Intermediate Advisory Number 30A NWS National Hurricane Center Miami FL AL072021 700 PM CDT Fri Aug 20 2021 ...AIR FORCE RECONNAISSANCE AIRCRAFT FINDS GRACE INTENSIFYING... ...LANDFALL ALONG EASTERN MAINLAND MEXICO EXPECTED LATER TONIGHT... SUMMARY OF 700 PM CDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...20.7N 95.7W ABOUT 105 MI...170 KM E OF TUXPAN MEXICO ABOUT 105 MI...170 KM NNE OF VERACRUZ MEXICO MAXIMUM SUSTAINED WINDS...100 MPH...150 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...967 MB...28.55 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * The coast of mainland Mexico from Puerto Veracruz to Cabo Rojo A Tropical Storm Warning is in effect for... * The coast of mainland Mexico from north of Cabo Rojo to Barra del Tordo A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area, in this case within 12 to 24 hours. Preparations to protect life and property should be rushed to completion. A Tropical Storm Warning means that tropical storm conditions are expected somewhere withing the warning area, in this case within 12 to 24 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 700 PM CDT (0000 UTC), the center of Hurricane Grace was located near latitude 20.7 North, longitude 95.7 West. Grace is moving toward the west near 10 mph (17 km/h), and this general motion is expected to continue through landfall. On the forecast track, the center of Grace is forecast to move across the southwestern Gulf of Mexico this evening, and then make landfall along the coast of mainland Mexico within the hurricane warning area tonight. Maximum sustained winds have increased to near 100 mph (150 km/h) with higher gusts. Strengthening is forecast until Grace makes landfall, with rapid weakening expected as Grace moves inland over the mountains of central Mexico. Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 185 miles (295 km). The estimated minimum central pressure recently measured by Air Force Reserve Reconnaissance Aircraft is 967 mb (28.55 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Grace can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2, WMO header WTNT42 KNHC and on the web at www.hurricanes.gov/graphics_at2.shtml?key_messages. STORM SURGE: A dangerous storm surge will raise water levels by as much as 4 to 6 ft above normal tide levels along the immediate coast within the hurricane warning area near and north of where the center makes landfall tonight. Near the coast, the surge will be accompanied by large and destructive waves. WIND: Hurricane conditions are expected within portions of the hurricane warning area in mainland Mexico tonight, with tropical storm conditions expected within the next few hours. Tropical storm conditions are expected within the tropical storm warning area in mainland Mexico by this evening. RAINFALL: Grace is expected to produce the following rainfall amounts: Over Veracruz, Puebla, Tlaxcala, Hidalgo, Queretaro, and eastern San Luis Potosi...6 to 12 inches of rain with isolated maximum totals of 18 inches are expected today through Sunday. Heavy rainfall from Grace will result in significant flash and urban flooding as well as mudslides. SURF: High surf generated by Grace will affect the southern Gulf of Mexico coastline today and continue into the weekend. 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 Papin/Beven
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Tropical Storm Henri Public Advisory Number 20A
2021-08-21 01:46:52| National Hurricane Center (Atlantic)
Issued at 800 PM EDT Fri Aug 20 2021 000 WTNT33 KNHC 202346 TCPAT3 BULLETIN Tropical Storm Henri Intermediate Advisory Number 20A NWS National Hurricane Center Miami FL AL082021 800 PM EDT Fri Aug 20 2021 ...HENRI TURNS NORTHWARD... ...NOAA AND AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT INVESTIGATING THE STORM... SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...31.6N 73.8W ABOUT 270 MI...435 KM SSE OF CAPE HATTERAS NORTH CAROLINA ABOUT 660 MI...1060 KM S OF MONTAUK POINT NEW YORK MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...N OR 360 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...994 MB...29.36 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Storm Surge Warning is in effect for... * South shore of Long Island from Mastic Beach to Montauk Point * North shore of Long Island from Oyster Bay to Montauk Point * Greenwich Connecticut to Chatham Massachusetts * Nantucket, Martha's Vineyard, and Block Island A Storm Surge Watch is in effect for... * South shore of Long Island from west of Mastic Beach to East Rockaway Inlet * North shore of Long Island from west of Oyster Bay to Flushing * Flushing New York to west of Greenwich Connecticut * North of Chatham Massachusetts to Sagamore Beach Massachusetts * Cape Cod Bay A Hurricane Warning is in effect for... * South shore of Long Island from Fire Island Inlet to Montauk Point * North shore of Long Island from Port Jefferson Harbor to Montauk Point * New Haven Connecticut to west of Watch Hill Rhode Island A Hurricane Watch is in effect for... * Watch Hill Rhode Island to Sagamore Beach Massachusetts * Nantucket, Martha's Vineyard, and Block Island A Tropical Storm Warning is in effect for... * Port Jefferson Harbor to west of New Haven Connecticut * South shore of Long Island from west of Fire Island Inlet to East Rockaway Inlet A Tropical Storm Watch is in effect for... * Manasquan Inlet New Jersey to west of East Rockaway Inlet New York, including New York City 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 Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. 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 Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. Interests elsewhere in the northeastern U.S. and Atlantic Canada should monitor the progress of Henri. Additional watches or warnings will likely be required later tonight or Saturday. 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 800 PM EDT (0000 UTC), the center of Tropical Storm Henri was located near latitude 31.6 North, longitude 73.8 West. Henri is now moving toward the north near 7 mph (11 km/h). A continued forward motion at a faster forward speed is expected through early Sunday. On the forecast track, Henri is expected to make landfall in Long Island or southern New England on Sunday. Reports from NOAA and Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds are near 70 mph (110 km/h) with higher gusts. Strengthening is forecast during the next day or so, and Henri is expected to become a hurricane tonight or Saturday and be at or near hurricane strength when it makes landfall in Long Island or southern New England. Tropical-storm-force winds extend outward up to 115 miles (185 km) from the center. The minimum central pressure estimated from the Hurricane Hunter aircraft data is 994 mb (29.36 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Henri can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC and on the web at hurricanes.gov/graphics_at3.shtml?key_messages. 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... Watch Hill, RI to Chatham, MA including Narragansett Bay, Buzzards Bay, Vineyard Sound, and Nantucket Sound...3-5 ft Chatham, MA to Sagamore Beach, MA including Cape Cod Bay...2-4 ft East Rockaway Inlet, NY to Montauk Point, NY...2-4 ft North shore of Long Island...2-4 ft Flushing, NY to Watch Hill, RI...2-4 ft Cape May, NJ to East Rockaway Inlet, NY...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: Hurricane conditions are expected in the hurricane warning area on Sunday, with tropical storm conditions expected by early Sunday. Hurricane conditions are possible in the hurricane watch area on Sunday, with tropical conditions possible by early Sunday. Tropical storm conditions are expected in the tropical storm warning area and possible in the tropical storm watch area on Sunday. RAINFALL: Henri may produce rainfall amounts of 3 to 6 inches over Long Island and New England Sunday into Monday, with isolated maximum totals near 10 inches. Heavy rainfall from Henri could result in considerable flash, urban, and small stream flooding, along with the potential for widespread minor and isolated moderate river flooding. SURF: Swells generated by Henri should continue to affect Bermuda during the next day or so. Swells are expected to increase across much of the east coast of the U.S. and Atlantic Canada tonight and into the weekend. These swells could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 PM EDT. $$ Forecaster Beven
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