Category Archives: Hydrology

An Atmospheric River impacts the PNW

Another atmospheric river event impacted the Pacific Northwest (PNW), earlier this week. Plumes of moisture moved into the region that led to heavy precipitation and flooding for the states of Washington, Oregon, and Idaho. 24-hour precipitation totals from Monday, 4 … Continue reading

Posted in AWIPS, Data Access, Heavy Rain and Flooding Issues, Hydrology, POES, Satellites | Leave a comment

The Snowfall Rate (SFR) and merged SFR Products

As of early November 2023, the TOWR-S RPM v24 has been released for National Weather Service (NWS) users to update their local AWIPS terminals with the latest satellite data capabilities. Within the RPM v24 release, more NWS CONUS users will … Continue reading

Posted in AWIPS, Data Access, Hydrology, Lake Effects, Miscellaneous, POES, Satellites, Winter Weather | Leave a comment

The VIIRS Flood Map Product

Need a new satellite product to observe flooding? Look no further than the VIIRS Flood Map product. The VIIRS Flood Map calculates the flood extent of a 375-m pixel (i.e., known as the floodwater fraction percentage from 0 to 100%, … Continue reading

Posted in AWIPS, Data Access, Heavy Rain and Flooding Issues, POES, Satellites, VIIRS | Leave a comment

Atmospheric River event of 7-10 January, 2023

By Sheldon Kusselson and Dan Bikos Advected Layer Precipitable Water (ALPW) Loop

Posted in Heavy Rain and Flooding Issues, Hydrology | Leave a comment

CIRA ALPW depiction of Atmospheric River of 4-5 November 2022

By Sheldon Kusselson and Dan Bikos Advected Layer Precipitable Water (ALPW) loop Observed 1-Day Precipitation valid 1200 UTC 5 November 2022 over the Pacific Northwest region:

Posted in Heavy Rain and Flooding Issues, POES | Leave a comment