International Sigmet / Convective Sigmet
Issued by NWS

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271
WSPA06 PHFO 170656
SIGPAS

KZAK SIGMET SIERRA 4 VALID 170655/171055 PHFO-
OAKLAND OCEANIC FIR EMBD TS OBS AT 0655Z WI N1115 E14930 - N1200
E15345 - N0730 E15730 - N0545 E15600 - N1115 E14930. TOP FL520. MOV W
10KT. WKN.