BULLETIN
Hurricane Sam Advisory Number 15
NWS National Hurricane Center Miami FL AL182021
500 AM AST Sun Sep 26 2021
...SAM REMAINS A CATEGORY FOUR HURRICANE...
...FLUCTUATIONS IN INTENSITY LIKELY DURING THE NEXT DAY OR SO...
SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
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LOCATION...13.8N 49.7W
ABOUT 940 MI...1510 KM ESE OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS...145 MPH...230 KM/H
PRESENT MOVEMENT...WNW OR 295 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES
WATCHES AND WARNINGS
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There are no coastal watches or warnings in effect.
DISCUSSION AND OUTLOOK
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At 500 AM AST (0900 UTC), the center of Hurricane Sam was located
near latitude 13.8 North, longitude 49.7 West. Sam is moving toward the west-northwest near 8 mph (13 km/h). This general motion is expected to continue today, followed by a turn toward the northwest on Monday. Then, a northwestward motion is forecast to continue through midweek.
Maximum sustained winds are near 145 mph (230 km/h) with higher
gusts. Sam is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Some fluctuations in intensity are expected
during the next day or so. Thereafter, some slow weakening is
forecast.
Sam is a small hurricane. Hurricane-force winds extend outward up
to 30 miles (45 km) from the center and tropical-storm-force winds
extend outward up to 90 miles (150 km).
The estimated minimum central pressure is 943 mb (27.85 inches).
HAZARDS AFFECTING LAND
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SURF: Swells generated by Sam are forecast to reach the Lesser
Antilles early this week. These swells could cause life-threatening
surf and rip current conditions. Please consult products from your
local weather office.