647 WWHW40 PHFO 080623 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 823 PM HST Thu Jun 7 2018 ...WINTER WEATHER ADVISORY FOR BIG ISLAND SUMMITS... .Recent observations from the summit of Mauna Kea indicate that deep moisture and below-freezing temperatures are bringing freezing fog and freezing rain, leading to icy conditions. With warming expected after sunrise Friday, the threat of icing will diminish. HIZ028-081800- /O.NEW.PHFO.WW.Y.0009.180608T0623Z-180608T1800Z/ Big Island Summits- 823 PM HST Thu Jun 7 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 8 AM HST FRIDAY... * WHAT...Freezing rain and freezing fog occurring. Additional light accumulations of ice overnight. * WHERE...Big Island Summits above 12000 feet. * WHEN...Until 8 AM Friday. * ADDITIONAL DETAILS...Significant reductions to visibility can be expected in cloud and fog. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for freezing rain means that periods of freezing rain will cause dangerously slippery roads and travel difficulties. The road to the summit of Mauna Kea is closed due to the dangerous road conditions. $$ Birchard