• ADVISORY: Cat 4 Sam 13

    From Weather Alert@454:1/105 to All on Sat Sep 25 17:53:00 2021
    465
    WTNT33 KNHC 252038
    TCPAT3

    BULLETIN
    Hurricane Sam Advisory Number 13
    NWS National Hurricane Center Miami FL AL182021
    500 PM AST Sat Sep 25 2021

    ...SAM RAPIDLY INTENSIFIES TO A CATEGORY FOUR HURRICANE...
    ...SOME ADDITIONAL STRENGTHENING EXPECTED THROUGH TONIGHT...


    SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ----------------------------------------------
    LOCATION...13.3N 48.5W
    ABOUT 1025 MI...1655 KM ESE OF THE NORTHERN LEEWARD ISLANDS
    MAXIMUM SUSTAINED WINDS...140 MPH...220 KM/H
    PRESENT MOVEMENT...WNW OR 290 DEGREES AT 10 MPH...17 KM/H
    MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES


    WATCHES AND WARNINGS
    --------------------
    There are no coastal watches or warnings in effect.


    DISCUSSION AND OUTLOOK
    ----------------------
    At 500 PM AST (2100 UTC), the center of Hurricane Sam was located
    near latitude 13.3 North, longitude 48.5 West. Sam is moving toward
    the west-northwest near 10 mph (17 km/h). A slower motion to the
    west-northwest is expected over the weekend, followed by a turn to
    the northwest on Monday.

    Maximum sustained winds have increased to near near 140 mph
    (220 km/h) with higher gusts. Sam is now a category 4 hurricane on
    the Saffir-Simpson Hurricane Wind Scale. Additional strengthening
    is expected through tonight. Some fluctuations in the hurricane's
    intensity are then possible early next week.

    Sam remains 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 105 miles (165 km).

    The estimated minimum central pressure is 943 mb (27.85 inches).


    HAZARDS AFFECTING LAND
    ----------------------
    SURF: Swells generated by Sam are forecast to reach the Lesser
    Antilles early next week. These swells could cause life-threatening
    surf and rip current conditions. Please consult products from your
    local weather office.


    NEXT ADVISORY
    -------------
    Next complete advisory at 1100 PM AST.

    $$
    Forecaster Beven
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