696 WWHW40 PHFO 181345 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 345 AM HST Wed Apr 18 2018 HIZ028-190400- /O.NEW.PHFO.WS.A.0005.180419T1600Z-180421T0400Z/ Big Island Summits- 345 AM HST Wed Apr 18 2018 ...WINTER STORM WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Storm total snow accumulations of 6 to 12 inches may occur. * WHERE...Big Island Summits above 12000 feet. * WHEN...6 AM Thursday morning through 6 PM Friday. * ADDITIONAL DETAILS...Roads to the summits may rapidly become snow covered and slippery, resulting in difficult travel conditions. Significant reductions in visibility are also possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact the summits. Anyone planning travel to the summits, including hikers and campers, should monitor the latest forecasts and consider postponing their trip until improved weather returns. $$