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Monitoring Tsunami Impacts Across the Pacific; Air Quality Concerns; Dangerous Heat; Critical Fire Weather for the West

Tsunami impacts continue for portions of the Pacific basin. Wildfire smoke causes unhealthy air in Midwest to Great Lakes. Heat dome spans Mississippi Valley to Mid-Atlantic with excessive heat warnings and advisories. Critical fire weather in Great Basin to Pacific Northwest (dry thunderstorms). Cold front spawns severe storms/heavy rain in Central U.S. today, shifts to East Coast Thursday. Read More >

Overview

On the morning of December 23rd, an extreme arctic cold front moved through the region, leading to record-breaking temperatures and wind chills in the double- digits below 0 due to frequent wind gusts above 30 mph. Power outages, due to both rolling blackouts and the winds, and loss of running water in many places were experienced in many locations across the region. Temperatures on Christmas Eve were among the coldest on record for both high and low temperatures with a very slow warming trend in the days afterward. The wind chills that resulted were the coldest in most places since February of 1996.

 

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