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WARNINGS
AIRMET WA
Tropical cyclone (SIGMET) WC

Tsunami WE
Tornado WF
Hydrological/River flood WG
Marine/Coastal flood WH
Other WO

SIGMET WS
Tropical cyclone (Typhoon/Hurricane) WT
Severe thunderstorm WU

Volcanic ash clouds (SIGMET) WV
Warning and weather summary WW

NOTICES

Hydrological NG
Marine NH
Nuclear emergency response NN
METNO/WIFMA NO

Product generation delay NP
TEST MSG (System related) NT
Warning related and/or cancellation NW

SATELLITE DATA

Satellite orbit parameters TB
Satellite cloud interpretations SAREP TC

Satellite remote upper air soundings SATEM TH
Clear radiance observations SARAD TR
Sea surface temperatures SATOB TT
Winds and cloud temperature SATOB TW
Miscellaneous TX