7:00 PM Advisory — Grace Will Bring Heavy Rain to Puerto Rico Tonight

| August 15, 2021 @ 7:05 pm

SUMMARY OF 7 PM CDT INFORMATION
LOCATION…17.1N 68.1W
ABOUT 155 MI…250 KM SE OF SANTO DOMINGO DOMINICAN REPUBLIC
ABOUT 295 MI…475 KM ESE OF PORT AU PRINCE HAITI
MAXIMUM SUSTAINED WINDS…35 MPH…55 KM/H
PRESENT MOVEMENT…W OR 270 DEGREES AT 15 MPH…24 KM/H
MINIMUM CENTRAL PRESSURE…1011 MB…29.86 INCHES

WATCHES AND WARNINGS
A Tropical Storm Watch is in effect for…
* Entire coast of the Dominican Republic
* Entire coast of Haiti

FORECAST DISCUSSION
At 800 PM AST (0000 UTC), the center of Tropical Depression Grace was located by an Air Force Reserve Reconnaissance aircraft near latitude 17.1 North, longitude 68.1 West. The depression is moving toward the west near 15 mph (24 km/h). A general west-northwestward motion is expected over the next few days. On the forecast track, Grace will move over Hispaniola on Monday, near or over eastern Cuba on Tuesday, and near or over west-central Cuba on Wednesday.

The aircraft reported that maximum sustained winds remain near 35 mph (55 km/h) with higher gusts. Little change in strength is forecast during the next day or two. The estimated minimum central pressure is 1011 mb (29.86 inches).

HAZARDS TO LAND
WIND: Tropical storm conditions are possible in the Dominican Republic tonight and Monday, and in Haiti on Monday and Monday night.

RAINFALL: The system is expected to produce the following rainfall amounts today into Tuesday:
• Virgin Islands…3 to 6 inches. This rainfall may produce scattered areas of flash and urban flooding.
• Over Puerto Rico…3 to 6 inches with isolated higher amounts. Heavy rainfall could lead to flash, urban and small stream flooding and possible mudslides.
• Over Haiti and the Dominican Republic…4 to 8 inches with isolated maximum totals of 15 inches across southern terrain areas. Heavy rainfall could lead to flash and urban flooding and possible mudslides from Monday into Tuesday.

By mid to late week, heavy rainfall from this system could impact portions of Cuba, the Bahamas and Florida.

SURF: Swells generated by Grace will continue to affect portions of the Leeward Islands, the Virgin Islands and Puerto Rico and will reach portions of Hispaniola tonight and Monday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.

Category: ALL POSTS, Tropical

About the Author ()

Scott Martin is an operational meteorologist, professional graphic artist, musician, husband, and father. Not only is Scott a member of the National Weather Association, but he is also the Central Alabama Chapter of the NWA president. Scott is also the co-founder of Racecast Weather, which provides forecasts for many racing series across the USA. He also supplies forecasts for the BassMaster Elite Series events including the BassMaster Classic.

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