781 WWHW40 PHFO 111340 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 340 AM HST Thu Apr 11 2019 ...WINTER WEATHER ADVISORY FOR BIG ISLAND SUMMITS ABOVE 11000 FEET... .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 bring periods of snow for the Big Island Summits through Friday night. HIZ028-120245- /O.CON.PHFO.WW.Y.0005.000000T0000Z-190413T1600Z/ Big Island Summits- 340 AM HST Thu Apr 11 2019 ...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. $$ Gibbs