International Sigmet / Convective Sigmet
Issued by NWS

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139
WSPA12 PHFO 040158
SIGPAY

KZAK SIGMET YANKEE 4 VALID 040155/040555 PHFO-
OAKLAND OCEANIC FIR EMBD TS OBS AT 0155Z WI N0915 E17900 - N0545
W18000 - N0330 E17045 - N0545 E17015 - N1000 E17430 - N0915 E17900.
TOP FL540. MOV W 10KT. WKN.