000 WAHW31 PHFO 180940 WA0HI HNLS WA 181000 AIRMET SIERRA UPDATE 1 FOR IFR VALID UNTIL 181600 . NO SIGNIFICANT IFR EXP. =HNLT WA 181000 AIRMET TANGO UPDATE 1 FOR TURB VALID UNTIL 181600 . NO SIGNIFICANT TURB EXP. =HNLZ WA 181000 AIRMET ZULU UPDATE 1 FOR ICE AND FZLVL VALID UNTIL 181600 . NO SIGNIFICANT ICE EXP. . FZLVL...144-146.