WAHW31 PHFO 232019 WA0HI HNLS WA 232018 COR AIRMET SIERRA UPDATE 4 FOR IFR VALID UNTIL 232200 . AIRMET MTN OBSC...OAHU N THRU E SECTIONS. TEMPO MTN OBSC ABV 025 DUE TO CLD AND SHRA. COND CONT BEYOND 2200Z. . AIRMET MTN OBSC...BIG ISLAND...UPDATE SOUTH CAPE TO PHKO TO UPOLU POINT. TEMPO MTN OBSC ABV 020 DUE TO CLD AND SHRA. COND CONT BEYOND 2200Z. . AIRMET MTN OBSC...MOLOKAI MAUI LANAI ENTIRE AREA. TEMPO MTN OBSC ABV 025 DUE TO CLD AND SHRA. COND CONT BEYOND 2200Z. . =HNLT WA 231600 AIRMET TANGO UPDATE 2 FOR TURB VALID UNTIL 232200 . NO SIGNIFICANT TURB EXP. =HNLZ WA 231600 AIRMET ZULU UPDATE 3 FOR ICE AND FZLVL VALID UNTIL 232200 . TEMPO LIGHT ICE IC MOLOKAI THROUGH BIG ISLAND IN LYR 130-FL200. COND CONT BEYOND 2200Z. . FZLVL...130 PHLI SLOPING TO 139 PHTO.