000 WAHW31 PHFO 170934 WA0HI HNLS WA 171000 AIRMET SIERRA UPDATE 1 FOR IFR VALID UNTIL 171600 . AIRMET MTN OBSC...BIG ISLAND UPOLU POINT VOLCANO. TEMPO MTN OBSC ABV 025 EXP DUE TO CLD AND SHRA. COND CONT BEYOND 1600Z. =HNLT WA 171000 AIRMET TANGO UPDATE 1 FOR TURB VALID UNTIL 171600 . NO SIGNIFICANT TURB EXP. =HNLZ WA 171000 AIRMET ZULU UPDATE 1 FOR ICE AND FZLVL VALID UNTIL 171600 . NO SIGNIFICANT ICE EXP. . FZLVL...146.