Category Archives: news and events

January 2021 President’s Message

[caption id="attachment_24495" align="alignleft" width="159"] NWA 2021 President Nate Johnson[/caption] Happy New Year and welcome to the first president’s message of 2021! I want to start the new year by acknowledging the steady leadership and hard work of the people who served the NWA last year. We owe our immediate past president, our Board of Directors, our…
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JOM: A Rare Ice Storm in the Colorado Rockies

During the early morning hours of 9 January 2017, freezing rain developed across several valley locations in western Colorado. The resultant ice accumulation led to extremely treacherous travel conditions with hundreds of vehicle accidents reported in the vicinity of Grand Junction, Colorado and near Durango, Colorado. Additionally, widespread power outages were reported in Durango and…
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In Memoriam: Robert H. Johns 1942 – 2020

Robert H. Johns 1942 – 2020 by Steven J. Weiss, Larry F. Wilson and Roger Edwards Robert H. (Bob) Johns, an NWA charter member and a preeminent severe local storms forecaster and researcher, passed away on October 26, 2020, four days before his 78th birthday. He worked for more than 30 years at the NWS Storm Prediction Center…
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JOM: SIFTing through satellite imagery with the Satellite Information Familiarization Tool

The Satellite Information Familiarization Tool (SIFT) is an open-source, multi-platform graphical user interface designed to easily display spectral and temporal sequences of geostationary satellite imagery. The Advanced Baseline Imager (ABI) and Advanced Himawari Imager (AHI) on the “new generation” of geostationary satellites collect imagery with a spatial resolution four times greater than previously available. Combined…
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