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Weather Advisory Update for April 11th, 2019


The National Weather Service (NWS) has issued the following advisories:


FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON The Flash Flood Watch continues for - Maui and the Big Island. - Through Friday afternoon - A broad upper level low nearing the Big Island from the east will remain in the area through Friday. Cold air aloft and instability associated with this upper feature combined with plenty of moisture will lead to periods of heavy showers and thunderstorms. Showers will become heavy at times, potentially leading to flash flooding. Although most of the activity will focus over windward areas with the strong trades in place, heavy showers and thunderstorms will also remain possible across leeward areas. PRECAUTIONARY/PREPAREDNESS ACTIONS A Flash Flood Watch means that conditions are favorable for flash flooding. Flash flooding is LIFE THREATENING. Do not cross fast flowing water in your vehicle or on foot. Monitor later forecasts and be prepared to take action if a Flash Flood Warning is issued. If you experience heavy rain or rising water, head to higher ground immediately.





WIND ADVISORY NOW IN EFFECT UNTIL 6 AM HST FRIDAY - WINDS: Northeast 20 to 30 mph with localized gusts to 50 mph are expected across Lanai, Kahoolawe, the central valley and leeward west Maui and the South Kohala district of the Big Island. Winds will be strongest over and immediately downwind of mountains. - TIMING: through early Friday morning. - IMPACTS: Winds this strong could down tree branches and cause localized power outages. Motorists, especially those in high profile vehicles, are urged to drive with extreme caution. PRECAUTIONARY/PREPAREDNESS ACTIONS A Wind Advisory means that sustained winds of at least 30 mph, or gusts of at least 50 mph, are expected. Motorists should use extra caution.



WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM HST SATURDAY - WHAT: Snow expected. Plan on slippery road conditions. Total snow accumulations of 1 to 3 inches, with localized higher amounts, are expected. - WHERE: Big Island Summits. - WHEN: through 6 AM Saturday. - ADDITIONAL DETAILS: Be prepared for reduced visibilities at times in snow, along with blowing and drifting snow. PRECAUTIONARY/PREPAREDNESS ACTIONS A Winter Weather Advisory for snow means periods of snow will cause travel difficulties. Be prepared for snow covered roads and limited visibilities, and use extreme caution while driving.

Mauna Kea Access Road from Hale Pohaku to the Summit is now closed to all Traffic. Poor road and snowy conditions currently occurring at the summit.

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