Powerful Sam Continues to Move Slowly Northwestward

| September 29, 2021 @ 9:53 am

SUMMARY OF 1100 AM AST…1500 UTC…INFORMATION
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LOCATION…19.4N 57.0W
ABOUT 405 MI…655 KM ENE OF THE NORTHERN LEEWARD ISLANDS
MAXIMUM SUSTAINED WINDS…130 MPH…215 KM/H
PRESENT MOVEMENT…NW OR 310 DEGREES AT 9 MPH…15 KM/H
MINIMUM CENTRAL PRESSURE…949 MB…28.03 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 1100 AM AST (1500 UTC), the center of Hurricane Sam was located near latitude 19.4 North, longitude 57.0 West. Sam is moving toward the northwest near 9 mph (15 km/h), and this general motion with an increase in forward speed is expected during the next couple of days. A turn toward the north is forecast by Friday. On the forecast track, Sam will pass well to the east-northeast of the northern Leeward Islands through tonight.

Maximum sustained winds are near 130 mph (215 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 couple of days, but Sam is forecast to remain a major hurricane through late this week.

Hurricane-force winds extend outward up to 40 miles (65 km) from the center, and tropical-storm-force winds extend outward up to 125 miles (205 km). The minimum central pressure estimated from NOAA Hurricane Hunter aircraft observations is 949 mb (28.03 inches).

HAZARDS AFFECTING LAND
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SURF: Swells generated by Sam will impact the Lesser Antilles during the next several days. Swells are expected to reach Bermuda and the Bahamas in a day or so, and then spread to the United States east coast by this weekend. These swells could 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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