983 WWHW40 PHFO 121007 WSWHFO URGENT - WINTER WEATHER MESSAGE National Weather Service Honolulu HI 1207 AM HST Mon Apr 12 2021 HIZ022-028-121115- /O.EXP.PHFO.WW.Y.0011.000000T0000Z-210412T1000Z/ Haleakala Summit-Big Island Summits- 1207 AM HST Mon Apr 12 2021 ...WINTER WEATHER ADVISORY HAS EXPIRED... Temperatures atop Haleakala and the Big Island Summits remain below freezing, but the main threat for additional winter weather has decreased. $$