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Tropical Depression Grace Public Advisory Number 11A
2021-08-16 07:48:36| National Hurricane Center (Atlantic)
Issued at 200 AM AST Mon Aug 16 2021 000 WTNT32 KNHC 160548 TCPAT2 BULLETIN Tropical Depression Grace Intermediate Advisory Number 11A NWS National Hurricane Center Miami FL AL072021 200 AM AST Mon Aug 16 2021 ...GRACE CONTINUES TO CAUSE HEAVY RAIN IN WESTERN PUERTO RICO... ...FLASH FLOODING AND MUDSLIDES POSSIBLE ACROSS HISPANIOLA TODAY... SUMMARY OF 200 AM AST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...17.3N 69.6W ABOUT 90 MI...145 KM SSE OF SANTO DOMINGO DOMINICAN REPUBLIC ABOUT 200 MI...320 KM ESE OF PORT AU PRINCE HAITI MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...W OR 275 DEGREES AT 15 MPH...24 KM/H MINIMUM CENTRAL PRESSURE...1011 MB...29.86 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Watch is in effect for... * Entire coast of the Dominican Republic * Entire coast of Haiti A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, in this case within 24 hours. Interests elsewhere in the the Turks and Caicos Islands, the southeastern Bahamas, and Cuba should monitor the progress of Grace. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 200 AM AST (0600 UTC), the center of Tropical Depression Grace was located near latitude 17.3 North, longitude 69.6 West. The depression is moving toward the west near 15 mph (24 km/h) and a general westward or west-northwestward motion is expected over the next few days. On the forecast track, Grace will move over Hispaniola later today, near or over eastern Cuba on Tuesday, and near or just south of west-central Cuba on Wednesday. Reports from an Air Force Reserve reconnaissance aircraft indicate that the maximum sustained winds remain near 35 mph (55 km/h) with higher gusts. Little change in strength is forecast during the next two to three days. The latest minimum central pressure measured by the aircraft is 1011 mb (29.86 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Grace can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC and on the web at www.hurricanes.gov/graphics_at2.shtml?key_messages. WIND: Tropical storm conditions are possible in the Dominican Republic today, and in Haiti today into tonight. RAINFALL: The system is expected to produce the following rainfall amounts: Virgin Islands...1 to 3 inches of additional rain is possible through today. Over Puerto Rico...3 to 6 inches of rain with isolated maximum storm total amounts of 8 inches are expected through Tuesday. This heavy rainfall may lead to flash, urban and small stream flooding, and possible mudslides. Over Haiti and the Dominican Republic...4 to 8 inches of rain with isolated maximum totals of 15 inches are expected across the southern terrain areas through Tuesday. This heavy rainfall may lead to flash and urban flooding, and possible mudslides. By mid to late week, heavy rainfall from this system may impact portions of Cuba, the Bahamas, and Florida. SURF: Swells generated by Grace will continue to affect portions of the Leeward Islands, Hispaniola, the Virgin Islands and Puerto Rico over the next day or so. 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 500 AM AST. $$ Forecaster Latto
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