International Sigmet / Convective Sigmet
Issued by NWS
Issued by NWS
711 WSPA06 PHFO 232317 SIGPAS KZAK SIGMET SIERRA 4 VALID 232315/240315 PHFO- OAKLAND OCEANIC FIR FRQ TS OBS AT 2315Z WI N0815 W17430 - N0945 W17045 - N0845 W17000 - N0645 W17400 - N0815 W17430. TOP FL550. STNR. NC.