000 WAHW31 PHFO 130512 AAA WA0HI HNLS WA 130510 AMD AIRMET SIERRA UPDATE 1 FOR IFR VALID UNTIL 131000 . AIRMET...MTN OBSC...BIG ISLAND...UPDATE UPOLU POINT TO PHTO TO VOLCANO. TEMPO MTN OBSC ABV 020 EXP DUE TO CLD AND SHRA. COND ENDING BY 1000Z. =HNLT WA 130400 AIRMET TANGO FOR TURB VALID UNTIL 131000 . NO SIGNIFICANT TURB EXP. =HNLZ WA 130400 AIRMET ZULU FOR ICE AND FZLVL VALID UNTIL 131000 . NO SIGNIFICANT ICE EXP. . FZLVL...126.