Volcanic Activity Sigmet
Issued by NWS
Issued by NWS
449 WVPA06 PHFO 242053 WSVPAS KZAK SIGMET SIERRA 5 VALID 242053/242110 PHFO- OAKLAND OCEANIC FIR CNL SIGMET SIERRA 4 VALID 241510/242110. VOLCANIC ASH THREAT HAS DECREASED.