Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Severe Weather

Winter Weather

EM Briefing

Heavy Rain/Flooding

Briefing Page Heavy Rainfall

Tropical Weather

24 Hour Total Precipitation	Storm Total Precipitation Forecast	Three Day Total Precipitation

WPC Excessive Rainfall Outlooks (Details)

Mesoscale Precipitation Discussions	Day 1	Day 2

Day 3	Day 4	Day 5

Precipitation Accumulation Forecast (click on thumbnails to display below)

6 Hourly Quantitative Precipitation Forecast

Probability of Precipitation (PoP) (click on thumbnails to display below)

6 Hourly Probability of Precipitation

Mainstem River Observations and Official Forecasts:

Weather Prediction Center Quantitative Precipitation Forecasts
NWS GSP Data: Stream & Lake Levels and Mainstem Forecasts | 24 Hour Observed Precipitation Through 7 AM

Radar Loops: GSP Radar (One-hour precip estimate)) | Charlotte Radar | Southeast Radar Loop

NWS GSP Text Products:

Your browser does not support inline frames or is currently configured not to display&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;nbsp; &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;