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International Sigmet / Convective Sigmet
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WSPA12 PHFO 181416
SIGPAY

KZAK SIGMET YANKEE 4 VALID 181415/181815 PHFO-
OAKLAND OCEANIC FIR EMBD TS OBS AT 1415Z WI N0930 W17515 - N0830
W16515 - N0630 W16430 - N0330 W17130 - N0515 W17500 - N0930 W17515.
TOP FL580. MOV W 15KT. NC.