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Tiyan, GU

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Tropical Cyclone Products

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Public Advisory (TCP)

  • A plain-language interpretation of the JTWC warning bulletin.
  • Provides latest information on tropical storm/typhoon watches and warnings.
  • Issued at least every 6 hours when a tropical cyclone is expected to affect WFO Guam's Area of Responsibility within 48 hours.

Local Statement (HLS)

  • Specific forecast for each island under a watch or warning, including rain, wind, surf, storm surge and coastal inundation, as well as recommended preparations.

Tropical Cyclone Update (TCU)

  • Hourly estimated position of a tropical cyclone within the range (about 230 miles) of Guam's Doppler radar.
  • Issued hourly near the top of the hour when a center fix is available.
  • May be issued at any time if a significant change occurs in the development or progress of a tropical cyclone.

Post-Storm Tropical Cyclone Reports (PSHGUM)

  • Brief history of TCs requiring WFO Guam warnings/watches
  • Statistics of bulletins issued by WFO Guam for the TC
  • Statistics and Data analysis of islands affected by the TC

 

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