FastCast—Thursday, Dec. 16 to Sunday, Dec. 19:
A ridge of high pressure will briefly bring drier weather to Western Washington from Thursday to Friday night. Chilly temperatures will continue, with highs in the low to mid 40s and lows in the mid to upper 30s. The next system arrives late Friday into Saturday. It will bring rain in the lowlands (0.5-1.25”) by Sunday, along with winds gusting 25-35 mph, and another round of mountain snow. Snow levels will rise to 3,500-4,000 feet, bringing a rain/snow mix at times at Snoqualmie Pass, with 8-18 inches of snow at the other passes through Sunday. Lowland highs will rise to the upper 40s to low 50s on Saturday, but will drop back to the low-mid 40s by Sunday. Lows remain in the mid-upper 30s.
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Continue reading the full blog below!
On Wednesday, a strong low pressure system moved across the middle of the country. This system had a very intense pressure gradient in its wake, which brought extreme winds gusting 75-110 mph across a wide swath of the US. Below is the Euro model from Tuesday, showing the intense storm.
The predictions were for gusts reaching 80-90 mph. For the most part, these predictions verified, but there were some places (particularly Colorado), where gusts reached an incredible 90-110 mph.
High Wind Warnings were widespread, as shown in the FOX Weather graphic below.
High winds were still ongoing as of the writing of this blog (7 PM Wednesday), particularly over Iowa and Illinois.
The strongest winds were observed over Colorado, Nebraska, Kansas, and Iowa, as shown in the NWS peak gust map below. (Click to enlarge)
Peak gusts included:
107 mph at Lamar, CO; 100 mph at the Air Force Academy in Colorado Springs, CO; 100 mph in Russell, KS; 95 mph in Salina, KS; 93 mph in Lincoln, NE; 85 mph in Grand Island, NE; 84 mph in Boulder, CO and Dodge City, KS; and 77 mph in downtown Kansas City, MO.
Numerous gusts of 75+ mph were recorded over a wide area, including parts of Colorado, Wyoming, New Mexico, Oklahoma, Texas, Nebraska, Kansas, Missouri, and Iowa. The wind event is still ongoing.
The winds were accompanied by very warm temperatures (60-75 degrees), extreme fire danger, and blowing dust. Some conditions were described as "reminiscent of the Dust Bowl" in parts of Kansas and Colorado.
The NOAA GOES-East Satellite view from Wednesday afternoon shows the blowing dust (green arrows pointing to it) and the swirl of the low center (red L).
Multiple lines of severe thunderstorms with damaging winds have also been spawned by this storm. The storm continues to do damage into the night. To view updates and photos of the damage, check out the links below: (FOX Weather has live streaming).
https://weather.com/news/news/2021-12-15-wind-tornadoes-snow-midwest-plains-west
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