997 WWHW40 PHFO 191327 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 327 AM HST Mon Feb 19 2018 ...WINTER WEATHER ADVISORY FOR BIG ISLAND AND HALEAKALA SUMMITS ABOVE 9000 FEET THROUGH THIS AFTERNOON... .Abundant moisture moving over the area will combine with a potent disturbance aloft to bring periods of wintry weather to the Big Island and Haleakala Summits today. HIZ022-028-200230- /O.CON.PHFO.WW.Y.0006.000000T0000Z-180220T0400Z/ Haleakala Summit-Big Island Summits- 327 AM HST Mon Feb 19 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM HST THIS EVENING... * WHAT...Periods of snow showers. Plan on slippery road conditions. Additional snow accumulations of 1 to 2 inches are possible. * WHERE...Haleakala Summit and Big Island Summits. * WHEN...Until 6 PM today. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. Heavy bursts of snow could also be accompanied by lightning. 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