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Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

 

NO active tropical cyclones at this time.
Fri, Dec 12, 2:37 AM ChST

 

The tropical systems depicted in these graphics are west of 180 (dateline) and based on bulletins issued by the Joint Typhoon Warning Center (JTWC), based in Honolulu, HI, and generated by the Central Pacific Hurricane Center (CPHC), based in Honolulu, HI for cyclones between EQ-25N and 180-130E. The Regional Specialized Meteorological Center (RSMC) for this area is the Japan Meteorological Agency (JMA).

 

To learn more the new probabilistic tropical cyclone graphics, read our introduction here: Introducing New Probabilistic TC Graphics PDF

 
 

Printer-friendly typhoon tracking chart (landscape)

Tropical Cyclone Public Advisories issued by WFO Guam for Guam, the Marianas and Micronesia are available via xml feed at https://www.weather.gov/source/hfo/xml/HFOTCPPQ.xml.

 

Related Links

Joint Typhoon Warning Center (JTWC)

Post Storm Hurricane Report   Issued: 11/12/2025 01:27:00 PM UTC

NWS Guam Tropical Cyclone AoR

Tropical Cyclone Products we issue

Historical Tropical Cyclones Affecting Guam (1671-1990)

Guam Homeland Security Office of Civil Defense

WMO: Worldwide Tropical Cyclone Information

Emergency Management Office for CNMI