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Tropical Storm Grace Public Advisory Number 18A
2021-08-18 01:43:41| National Hurricane Center (Atlantic)
Issued at 800 PM EDT Tue Aug 17 2021 000 WTNT32 KNHC 172343 TCPAT2 BULLETIN Tropical Storm Grace Intermediate Advisory Number 18A NWS National Hurricane Center Miami FL AL072021 800 PM EDT Tue Aug 17 2021 ...NOAA AND AIR FORCE RECONNAISSANCE AIRCRAFT FIND THE CENTER OF GRACE JUST WEST OF JAMAICA... ...HEAVY RAINFALL AND FLASH FLOOD THREAT CONTINUES IN JAMAICA... SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...18.3N 78.6W ABOUT 50 MI...80 KM W OF MONTEGO BAY JAMAICA ABOUT 185 MI...295 KM ESE OF GRAND CAYMAN MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...W OR 280 DEGREES AT 15 MPH...24 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 Hurricane Warning is in effect for... * Yucatan Peninsula of Mexico from Cancun to Punta Herrero, including Cozumel A Hurricane Watch is in effect for... * Cayman Islands A Tropical Storm Warning is in effect for... * Jamaica * Southern coast of the Cuban provinces of Santiago de Cuba, Granma, Las Tunas, and Camaguey * Cayman Islands * Yucatan Peninsula of Mexico from north of Cancun to Cabo Catoche * Yucatan Peninsula of Mexico from south of Punta Herrero to Puerto Costa Maya A Tropical Storm Watch is in effect for... * Southern coast of the Cuban provinces of Ciego de Avila, Sancti Spiritus, Cienfuegos, Matanzas, and Pinar del Rio, as well as Isla de la Juventud. 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 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 within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. Interests elsewhere in the Yucatan Peninsula of Mexico should monitor the progress of Grace. Additional watches or warnings may be required tonight. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 PM EDT (0000 UTC), the center of Tropical Storm Grace was located just west of the western tip of Jamaica near latitude 18.3 North, longitude 78.6 West. Grace is moving toward the west near 15 mph (24 km/h). A general westward to west-northwestward motion is expected for the next several days. On the forecast track, the center of Grace will move away from the western coast of Jamaica this evening. Grace is forecast to move near or over the Cayman Islands late tonight and early Wednesday, and then approach the Yucatan peninsula of Mexico late Wednesday or early Thursday. Reports from NOAA and Air Force Reserve Hurricane Hunter aircraft indicate that the maximum sustained winds have increased to near 60 mph (95 km/h) with higher gusts. Grace is forecast to strengthen into a hurricane on Wednesday, with some additional strengthening possible prior to the center reaching the Yucatan Peninsula. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. A sustained wind of 40 mph (65 km/h) and a gust to 52 mph (83 km/h) was recently reported at Kingston, Jamaica. The latest minimum central pressure reported by an Air Force Reserve Hurricane Hunter aircraft is 1002 mb (29.59 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. WIND: Tropical storm conditions are expected to continue over portions of Jamaica through early tonight. Tropical storm conditions are expected along a portion of the southern coast of Cuba within the warning area through early tonight, and over the Cayman Islands beginning tonight and into early Wednesday. Hurricane conditions are possible in the Cayman Islands by early Wednesday. Tropical storm conditions are possible along the southern coast of Cuba within the watch area tonight and Wednesday. Hurricane conditions are expected within the warning area in the Yucatan Peninsula of Mexico on Wednesday night with tropical storm conditions beginning as early as Wednesday evening. RAINFALL: The system is expected to produce the following rainfall amounts: Over Haiti...an additional 1 to 2 inches of rain with isolated maximum totals of 15 inches are expected across the southern terrain areas today. This heavy rainfall will likely cause flash and urban flooding, along with possible mudslides. Over far southern Cuba...and additional 2 to 4 inches of rain. Additional heavy rainfall could lead to flash and urban flooding, along with possible mudslides. Over Jamaica, the Cayman Islands, and portions of the Yucatan Peninsula....3 to 6 inches of rain with isolated maximum totals of 10 inches are expected through Thursday. This heavy rainfall could lead to flash and urban flooding. STORM SURGE: A storm surge could raise water levels as high as 1 to 3 ft above normal tide levels in portions of the Cayman Islands. A dangerous storm surge will raise water levels by as much as 3-5 feet above normal tide levels along the immediate coast near and to the north of where the center makes landfall in the northeastern Yucatan Peninsula late Wednesday or early Thursday. Near the coast, the surge will be accompanied by large and destructive waves. SURF: Swells generated by Grace will spread westward from Jamaica to the Cayman Islands, the southern coast of Cuba, and the Yucatan Peninsula of 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 1100 PM EDT. $$ Forecaster Brown
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Summary for Tropical Storm Henri (AT3/AL082021)
2021-08-18 01:40:56| National Hurricane Center (Atlantic)
...HENRI BEGINNING TO MOVE A BIT FASTER TO THE WEST-SOUTHWEST... As of 8:00 PM AST Tue Aug 17 the center of Henri was located near 30.2, -64.5 with movement WSW at 5 mph. The minimum central pressure was 997 mb with maximum sustained winds of about 65 mph.
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Tropical Storm Henri Public Advisory Number 8A
2021-08-18 01:40:56| National Hurricane Center (Atlantic)
Issued at 800 PM AST Tue Aug 17 2021 000 WTNT33 KNHC 172340 TCPAT3 BULLETIN Tropical Storm Henri Intermediate Advisory Number 8A NWS National Hurricane Center Miami FL AL082021 800 PM AST Tue Aug 17 2021 ...HENRI BEGINNING TO MOVE A BIT FASTER TO THE WEST-SOUTHWEST... SUMMARY OF 800 PM AST...0000 UTC...INFORMATION ---------------------------------------------- LOCATION...30.2N 64.5W ABOUT 145 MI...235 KM SSE OF BERMUDA MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...WSW OR 255 DEGREES AT 5 MPH...8 KM/H MINIMUM CENTRAL PRESSURE...997 MB...29.44 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Watch is in effect for... * Bermuda A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, in this case within the next 24 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 PM AST (0000 UTC), the center of Tropical Storm Henri was located near latitude 30.2 North, longitude 64.5 West. Henri is moving toward the west-southwest near 5 mph (8 km/h). A somewhat faster motion toward the west is forecast by tomorrow, followed by a motion to the west-northwest or northwest by late Thursday. On the forecast track, the center of Henri should pass well to the south of Bermuda later tonight. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Some additional strengthening is possible tonight, followed by little change in strength through Thursday. Tropical-storm-force winds extend outward up to 70 miles (110 km) from the center. The estimated minimum central pressure is 997 mb (29.44 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm conditions are possible tonight across Bermuda and the nearby waters, particularly to the south of the island. SURF: Swells generated by Henri are expected to affect Bermuda during the next day or so. Swells could increase along the southeast and mid-Atlantic U.S. coasts by the end of the week. 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 AST. $$ Forecaster Papin/Brown
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Tropical Storm Henri Graphics
2021-08-18 01:40:45| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Tue, 17 Aug 2021 23:40:45 GMT Wind Speed Probabilities last updated Tue, 17 Aug 2021 21:35:35 GMT
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Atlantic Tropical Weather Outlook
2021-08-18 01:21:10| National Hurricane Center (Atlantic)
000 ABNT20 KNHC 172321 TWOAT Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 PM EDT Tue Aug 17 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: The National Hurricane Center is issuing advisories on Tropical Storm Grace located near the west coast of Jamaica, and on Tropical Storm Henri, located over 100 miles south of Bermuda. The Weather Prediction Center is issuing advisories over Tropical Depression Fred, located inland over western North Carolina. Tropical cyclone formation is not expected during the next 5 days. && Public advisories issued by the Weather Prediction Center on Tropical Depression Fred can be found under AWIPS header TCPAT1, WMO header WTNT31 KWNH, and on the web at http://www.wpc.ncep.noaa.gov $$ Forecaster Papin/Brown
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