The graphics below are designed to forecast the presence and strength of Atmospheric Rivers using data from the NCEP Global Forecast System (GFS), North American Mesoscale Forecast System (NAM), and Global Ensemble Forecast System (GEFS) models.

This page contains graphics designed to forecast the presence and strength of Atmospheric Rivers using data from the NCEP Global Forecast System (GFS), Global Ensemble Forecast System (GEFS – v12) and the European Centre for …

Access information, images, analyses, diagnostics of current conditions, forecasts, and projects related to atmospheric rivers (ARs). More on ARs... Latest integrated water vapor, cloud liquid water, and rain rate. Infrared, visible, and water vapor satellite images. Gridded precipitation products at several timescales.

2025年2月3日 · Revolutionize the physical understanding, observations, weather predictions, seasonal outlooks and climate projections of extreme events in Western North America, including atmospheric rivers, the North American summer monsoon and their impacts on floods, droughts, hydropower, ecosystems and the economy.

2 天之前 · A Pacific storm system is funneling an atmospheric river toward the Western United States, delivering heavy rain and snow.

Atmospheric River Scale Forecast Products. The AR scale is determined based on the duration of AR conditions (IVT >250 kg m-1 s-1) and maximum IVT during the AR as described in Ralph et al. 2019. For a description of the AR Scale view the video below.

2025年2月3日 · Skiers may delight in the snow forecast, but the latest in a series of atmospheric rivers threatens to bring flooding and mudslides to California. CANADA MINN. N.D. WIS. MONT. WASH. S.D ...

2025年2月4日 · Rainfall rates could reach more than 1 inch per hour on Tuesday. An atmospheric river is pounding Northern California with heavy rain and the threat of flooding before heading to Southern ...

2025年2月4日 · NOAA studies atmospheric rivers to improve forecasting capabilities as well as to improve our understanding of atmospheric river impacts on communities and the physical environment. Atmospheric rivers are long, concentrated regions in the atmosphere that transport moist air from the tropics to higher latitudes.

2024年11月21日 · The atmospheric river across California is expected to begin to weaken and drift south, bringing an end to the extreme wet weather over coastal Northern California.