• Lowell - Warnings issued for Kauai, Niihau

    From Mike Powell@1:2320/107 to All on Sun Sep 6 10:07:04 2026
    00
    WTPA34 PHFO 061448
    TCPCP4

    BULLETIN
    Hurricane Lowell Advisory Number 42
    NWS Central Pacific Hurricane Center Honolulu HI EP122026
    Issued by NWS National Hurricane Center Miami FL
    500 AM HST Sun Sep 06 2026

    ...TROPICAL STORM WARNING ISSUED FOR KAUAI AND NIIHAU...


    SUMMARY OF 500 AM HST...1500 UTC...INFORMATION ----------------------------------------------
    LOCATION...14.7N 163.8W
    ABOUT 580 MI...935 KM SSW OF LIHUE HAWAII
    ABOUT 600 MI...960 KM SW OF HONOLULU HAWAII
    MAXIMUM SUSTAINED WINDS...125 MPH...205 KM/H
    PRESENT MOVEMENT...NNW OR 335 DEGREES AT 6 MPH...9 KM/H
    MINIMUM CENTRAL PRESSURE...943 MB...27.85 INCHES


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

    A Hurricane Warning has been issued for the Papahanaumokuakea
    Marine National Monument from Nihoa to French Frigate Shoals. A
    Tropical Storm Warning has been issued for Kauai County, including
    the islands of Kauai and Niihau.

    SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

    A Hurricane Warning is in effect for...
    * The Papahanaumokuakea Marine National Monument from Nihoa to
    French Frigate Shoals

    A Tropical Storm Warning is in effect for...
    * Kauai County, including the islands of Kauai and Niihau

    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 rushed to completion.

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

    Interests elsewhere in the Hawaiian Islands and the
    Papahanaumokuakea Marine National Monument should monitor the
    progress of Lowell.

    For storm information specific to your area, including possible
    inland watches and warnings, please monitor products issued by your
    local National Weather Service forecast office.


    DISCUSSION AND OUTLOOK
    ----------------------
    At 500 AM HST (1500 UTC), the center of Hurricane Lowell was located
    near latitude 14.7 North, longitude 163.8 West. Lowell is moving
    toward the north-northwest near 6 mph (9 km/h). A turn toward the
    north and north-northeast with an increase in forward speed is
    expected over the next couple of days, bringing the center of
    Lowell across portions of the Papahanaumokuakea Marine National
    Monument, just west of the main Hawaiian Islands, Monday night.
    Lowell is forecast to turn toward the north-northwest and slow
    down by Tuesday night after passing the Hawaiian Islands.

    Maximum sustained winds are near 125 mph (205 km/h) with higher
    gusts. Lowell is a category 3 hurricane on the Saffir-Simpson
    Hurricane Wind Scale. Some fluctuations in intensity remain
    possible through this afternoon, followed by gradual weakening
    beginning tonight. Lowell is expected to remain a major hurricane
    through Monday.

    Hurricane-force winds extend outward up to 50 miles (85 km) from the
    center and tropical-storm-force winds extend outward up to 175 miles
    (280 km).

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


    HAZARDS AFFECTING LAND
    ----------------------
    Key messages for Lowell can be found in the Tropical Cyclone
    Discussion under AWIPS header HFOTCDCP4 and WMO header WTPA44
    PHFO.

    WIND: Tropical storm conditions are expected in Kauai County by
    Monday afternoon or evening. Hurricane conditions are possible in
    in the Papahanaumokuakea Marine National Monument between Nihoa and
    French Frigate Shoals Monday night, with tropical storm conditions
    beginning Monday afternoon. Wind speeds atop and on the windward
    and leeward sides of hills and mountains are often up to 30 percent
    stronger than the near-surface winds, and in some elevated locations
    could be even greater.

    RAINFALL: Hurricane Lowell is expected to produce rainfall totals of
    6 to 10 inches for Kauai, with maximum totals of 14 inches possible.
    For the Big Island, 4 to 8 inches of rain is expected with isolated
    totals of 12 inches possible. For Maui, 2 to 4 inches of rain is
    expected, with isolated maximum totals of 8 inches possible. Across
    the remaining islands, rainfall of 2 to 4 inches is possible. This
    rainfall may produce significant flash flooding and mudslides,
    especially across Kauai County and portions of the Big Island.

    For a complete depiction of forecast rainfall associated with
    Hurricane Lowell, please see the National Weather Service Storm
    Total Rainfall Graphic available at
    hurricanes.gov/graphics_ep12.shtml?rainqpf

    STORM SURGE: The combination of storm surge and tide will cause
    normally dry areas near the coast to be flooded by rising waters
    moving inland from the shoreline. The water could reach the
    following heights above ground somewhere in the indicated areas if
    the peak surge occurs at the time of high tide...

    Kauai County...1-3 ft
    Oahu...Up to 1 ft

    The deepest water will occur along the immediate coast near and to
    the right of the center, where the surge will be accompanied by
    large and destructive waves. Surge-related flooding depends on the
    relative timing of the surge and the tidal cycle, and can vary
    greatly over short distances.

    For a complete depiction of areas at risk of storm surge inundation,
    please see the National Weather Service Peak Storm Surge Graphic,
    available at hurricanes.gov/graphics_cp4.shtml?peakSurge.

    SURF: Swells from Lowell are likely to cause life-threatening surf
    and rip current conditions during the next several days across
    many of the Hawaiian islands. Please consult products from your
    local weather office.


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

    $$
    Forecaster Berg
    NNN
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