St Lucia and Martinique under Tropical Storm Watch
By NHC
Tropical Storm Bret Intermediate Advisory Number 6A NWS National Hurricane Center Miami FL AL032023 800 PM AST Tue Jun 20 2023
…BRET CONTINUES MOVING WESTWARD… …TROPICAL STORM WATCH ISSUED FOR ST. LUCIA…
SUMMARY OF 800 PM AST…0000 UTC…INFORMATION ———————————————- LOCATION…12.4N 49.5W ABOUT 780 MI…1255 KM E OF THE WINDWARD ISLANDS MAXIMUM SUSTAINED WINDS…45 MPH…75 KM/H PRESENT MOVEMENT…W OR 280 DEGREES AT 18 MPH…30 KM/H MINIMUM CENTRAL PRESSURE…1006 MB…29.71 INCHES
WATCHES AND WARNINGS ——————– CHANGES WITH THIS ADVISORY:
The government of St. Lucia has issued a Tropical Storm Watch for St. Lucia.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Watch is in effect for… * Barbados * Dominica * St. Lucia
A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.
Interests elsewhere in the Lesser Antilles should monitor the progress of Bret. Additional tropical storm watches will likely be required for other islands later tonight.
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 Bret was located near latitude 12.4 North, longitude 49.5 West. Bret is moving toward the west near 18 mph (30 km/h), and this general motion is expected to continue for the next several days. On the forecast track, the center of Bret is expected move across portions of the Lesser Antilles Thursday afternoon and Thursday night, and then move across the eastern Caribbean Sea on Friday.
Maximum sustained winds are near 45 mph (75 km/h) with higher gusts. Strengthening is forecast during the next day or so, and Bret is expected to be a tropical storm when it reaches the Lesser Antilles Thursday and Thursday night.
Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center.
The estimated minimum central pressure is 1006 mb (29.71 inches).
HAZARDS AFFECTING LAND ———————- Key messages for Bret can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT3, WMO header WTNT43 KNHC and on the web at hurricanes.gov/text/MIATCDAT3.shtml
WIND: Tropical storm conditions are possible within the watch area by Thursday.
RAINFALL: Through Saturday morning, storm total rainfall amounts of 4 to 6 inches with maximum amounts of 10 inches are possible across portions of the Lesser Antilles from Guadeloupe southward to St. Lucia. Rainfall amounts of 2 to 4 inches are possible across Barbados and St. Vincent and the Grenadines. The heavy rainfall could lead to flash flooding, especially across areas of higher terrain. Isolated urban flooding is also possible.
NEXT ADVISORY ————- Next complete advisory at 1100 PM AST.
