Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. Read More >

NO active tropical cyclones at this time.

Sun, Dec 28, 8:59 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.