International Sigmet / Convective Sigmet
Issued by NWS
Issued by NWS
337 WSPA06 PHFO 170138 SIGPAS KZAK SIGMET SIERRA 3 VALID 170135/170535 PHFO- OAKLAND OCEANIC FIR EMBD TS OBS AT 0135Z WI N1515 W16400 - N1500 W16115 - N1130 W16045 - N1130 W16330 - N1515 W16400. TOP FL550. STNR. NC.