Atmospheric River Portal Access information, images, analyses, diagnostics of current conditions, forecasts, and projects related to atmospheric rivers (ARs). More on ARs...

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 …

PSL conducts targeted field campaigns using satellite measurements, Map showing the major pathways of moisture transport in ARs from the Pacific Ocean into the Intermountain West.

The following shows the Automated Atmospheric River detection technique designed and run by NOAA/ESRL/PSL applied to SSMIS water vapor imagery. [ More Information and Archived …

An automated technique has been developed to objectively identify and characterize atmospheric river events in the fields of integrated water vapor (IWV) content and integrated water vapor …

Atmospheric Rivers (ARs) are the regions of extratropical storms where high winds and water vapor are concentrated. These factors combine to produce heavy rainfall upon landfall, …

The AQPI system consists of improved weather radar data for precipitation estimation and short-term nowcasting (0-1 hours); additional surface measurements of precipitation, streamflow and …

Atmospheric Rivers Atmospheric Rivers (ARs) are narrow belts of concentrated moisture transported in the atmosphere, and are a key process linking weather and climate. ARs …

The plots linked below display the snow level, the lowest elevation in the atmosphere where frozen precipitation melts and changes into rain as observed from vertically pointing …

Jun 12, 2018 · The 2006 flood event was driven by an atmospheric river, which had penetrated inland from the West Coast. Previous research has shown that climate change is projected to …