VISIT: Meteorological Interpretation Blog

By Sheldon Kusselson

By Sheldon Kusselson

During mid-April 2024, unprecedented flooding occurred in the Middle East, specifically in the countries of the United Arab Emirates (UAE) and Oman. Over the course of a few days, a series of storms produced significant precipitation totals that pummeled the region, which led to extensive flooding that shut down schools, grounded or diverted flights, and Continue Reading

By Sheldon Kusselson Animations: ALPW Layer Vapor Transport Percentile Ranking

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 December through Tuesday, 5 December 2023 were quite impressive over western Washington. Additionally, the Seattle-Tacoma Continue Reading

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%, displayed in green-to-red colors). The product also differentiates between scene types (e.g., cloud cover, bare Continue Reading

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

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:

By Dan Bikos and Sheldon Kusselson Hurricane Fiona underwent a transition from a tropical cyclone to an extra-tropical cyclone on 23-24 September 2022.  The resulting extra-tropical cyclone was very intense and led to significant storm surge, wind damage and heavy rain in southeast Canada centered on Nova Scotia. The Advected Layer Precipitable Water loop does an Continue Reading