• ADVISORY: Hurricane Melissa Advisory Number 20

    From COD Weather Processor@1:2320/105 to wx-atlan@lists.illinois.edu on Sunday, October 26, 2025 08:55:41
    730
    WTNT33 KNHC 260855
    TCPAT3

    BULLETIN
    Hurricane Melissa Advisory Number 20
    NWS National Hurricane Center Miami FL AL132025
    500 AM EDT Sun Oct 26 2025

    ...MELISSA NOW A CATEGORY 4 HURRICANE...
    ...LIFE-THREATENING AND CATASTROPHIC FLASH FLOODING AND LANDSLIDES
    EXPECTED IN PORTIONS OF JAMAICA AND SOUTHERN HISPANIOLA THROUGH
    MIDWEEK...


    SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION ----------------------------------------------
    LOCATION...16.3N 76.3W
    ABOUT 120 MI...195 KM SSE OF KINGSTON JAMAICA
    ABOUT 280 MI...450 KM SSW OF GUANTANAMO CUBA
    MAXIMUM SUSTAINED WINDS...140 MPH...220 KM/H
    PRESENT MOVEMENT...W OR 270 DEGREES AT 5 MPH...7 KM/H
    MINIMUM CENTRAL PRESSURE...944 MB...27.88 INCHES


    WATCHES AND WARNINGS
    --------------------
    CHANGES WITH THIS ADVISORY:

    None.

    SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

    A Hurricane Warning is in effect for...
    * Jamaica

    A Hurricane Watch is in effect for...
    * Southwestern peninsula of Haiti from the border with the
    Dominican Republic to Port-Au-Prince
    * Cuban provinces of Granma, Santiago de Cuba, Guantanamo, and
    Holguin.

    A Tropical Storm Warning in effect for...
    * Southwestern peninsula of Haiti from the border with the
    Dominican Republic to Port-Au-Prince

    A Hurricane Warning means that hurricane conditions are expected
    somewhere within the warning area. A warning is typically issued
    36 hours before the anticipated first occurrence of
    tropical-storm-force winds, conditions that make outside
    preparations difficult or dangerous. Preparations to protect life
    and property should be complete.

    A Hurricane Watch means that hurricane conditions are possible
    within the watch area.

    A Tropical Storm Warning means that tropical storm conditions are
    expected somewhere within the warning area within 36 hours.

    Interests elsewhere in Haiti, the Dominican Republic, Cuba, the
    southeastern and central Bahamas, and the Turks and Caicos Islands
    should monitor the progress of Melissa.

    For storm information specific to your area, please monitor
    products issued by your national meteorological service.


    DISCUSSION AND OUTLOOK
    ----------------------
    At 500 AM EDT (0900 UTC), the center of Hurricane Melissa was
    located near latitude 16.3 North, longitude 76.3 West. Melissa is
    moving toward the west near 5 mph (7 km/h). A slow westward motion
    is expected today, followed by a turn to the north and northeast on
    Monday and Tuesday. On the forecast track, the center of Melissa is
    expected to move near or over Jamaica through Tuesday, across
    southeastern Cuba Tuesday night, and across the southeastern
    Bahamas on Wednesday.

    Satellite images indicate that maximum sustained winds have rapidly
    increased to near 140 mph (220 km/h) with higher gusts. Melissa is
    a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale.
    Continued rapid intensification is expected through tonight,
    followed by fluctuations in intensity. Melissa is expected to be a
    major hurricane when making landfall in Jamaica Monday night or
    Tuesday morning and southeastern Cuba late Tuesday.

    Hurricane-force winds extend outward up to 25 miles (35 km) from the
    center and tropical-storm-force winds extend outward up to 175 miles
    (280 km).

    The estimated minimum central pressure is 944 mb (27.88 inches).


    HAZARDS AFFECTING LAND
    ----------------------
    Key messages for Melissa can be found in the Tropical Cyclone
    Discussion under AWIPS header MIATCDAT3 and WMO header WTNT43 KNHC.

    WIND: Tropical storm conditions are likely occuring in Jamaica,
    with hurricane conditions expected by Monday. Tropical storm
    conditions are expected in the warning area in Haiti today. The
    potential for hurricane conditions in the watch area in Haiti
    have diminished for today, but there is still a possibility of
    hurricane conditions occurring there on Tuesday. Hurricane
    conditions are possible in the watch area in eastern Cuba on Tuesday
    into Wednesday.

    RAINFALL: Melissa is expected to bring total rainfall of 15 to 30
    inches to portions of southern Hispaniola and Jamaica into
    Wednesday, with local maxima of 40 inches possible. Additional
    heavy rainfall is likely beyond Wednesday; uncertainty at that time
    range precludes exact storm totals. Catastrophic flash flooding and
    landslides are probable across portions of southern Hispaniola and
    Jamaica.

    For eastern Cuba, total rainfall of 6 to 12 inches, with local
    amounts to 18 inches, are expected into Wednesday resulting in
    life-threatening flash flooding and landslides. Additional heavy
    rainfall is likely beyond Wednesday; uncertainty at that time range
    precludes exact storm totals.

    For a complete depiction of forecast rainfall associated with
    Melissa, please see the National Weather Service Storm Total
    Rainfall Graphic, available at
    hurricanes.gov/graphics_at3.shtml?rainqpf

    STORM SURGE: Life-threatening storm surge is likely along the south
    coast of Jamaica late Monday through Tuesday morning. Peak
    storm surge heights could reach 9 to 13 feet above ground level,
    near and to the east of where the center of Melissa makes landfall.
    This storm surge will be accompanied by large and destructive waves.

    There is a potential for significant storm surge along the
    southeast coast of Cuba late Tuesday or Wednesday.

    SURF: Swells generated by Melissa are expected to affect portions of Hispaniola, Jamaica, eastern Cuba, and the Cayman Islands during the
    next several days. These swells are likely to cause
    life-threatening surf and rip current conditions. Please consult
    products from your local weather office.


    NEXT ADVISORY
    -------------
    Next intermediate advisory at 800 AM EDT.
    Next complete advisory at 1100 AM EDT.

    $$
    Forecaster Berg


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