A strong cold front passage resulted in a high wind gust at Evanston.
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The episode as NWS SLC wrote it up.
A strong cold front passage resulted in a high wind gust at Evanston.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Salt Lake City, UT wrote its last area forecast discussion before the first event at Nov 16, 4:03 AM MST, 16 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 403 AM MST Tue Nov 16 2021 .SYNOPSIS... A cold front will bring a colder airmass into the area on Tuesday and Wednesday, with another similar system on the horizon for Friday. && .SHORT TERM (Through 12Z Friday)... A cold front is pushing into northwestern Utah early this morning with an area of light precipitation developing along and behind the boundary. As the parent trough moves eastward through the Northern Rockies this morning the front will outrun the upper- level forcing and moisture this afternoon as it moves southward toward central utah, but not before resulting in some light precipitation across northern Utah through the morning hours. Northern Utah mountains are still expected to see the be precipitation totals, with overall high snow levels starting above 7500-8500 feet, and then falling to around 6500 to 7500 as colder air arrives behind the front. Snow amounts will remain on the light side, generally in the 1 to 3 inch range, with the higher end of that range along the Idaho border, diminishing quickly around the central Wasatch and western Uintas southward. Some very light valley rain is possible through the morning hours, including along the Wasatch Front, but amounts will be limited to just a few hundredths of an inch. The more sensible impact today will be the mild temperatures to start the morning with pre-frontal warm and breezy conditions giving way to cooler northern winds behind the frontal passage by mid morning and continued cold advection through the afternoon. This will result in a non-diurnal temperature curve in northern Utah, with warmest temperatures this morning falling behind the front and remain cool through the afternoon. The front will move through central Utah this afternoon and finally southern Utah tonight bringing a much cooler day across the entire state on Wednesday. High temperatures will run about 5 to 10 degrees below average on Wednesday, which will feel like an abrupt return to fall after our mild temperatures that have been running around 10-15 degrees above average the last few days. The first freeze of the fall, and likely tying the latest on record at SLC, is likely along the Wasatch Front tonight, with a 70-75% chance tonight. If we somehow escape tonight without a freeze Wednesday night will bring a better chance as the surface high settles over northern Utah, and results in a 80% chance of a freeze at SLC. So if you're pushing your luck with sensitive outdoor plants still along the Wasatch Front, now is probably the time to bring them in. Otherwise, dry and cool conditions will prevail through mid-week with a cool high pressure system in control. The storm system will approach by late Thursday night, but more on that below... .LONG TERM (After 12Z Friday)... The persistent ridge axis near the West Coast will continue to weaken storm systems as they try to penetrate inland. The Canadian appears to be the only model that is supportive of breaking down the ridge to allow a storm system to move across northern Utah Friday into Saturday. However, with so many ensemble members of the GFS and EC in disagreement had to back off on the PoP forecasts and went with a less aggressive PoP6 from the NBM vs the PPI06 NBM. In doing so, this removed PoPs from the southern flank of the Uintas in Utah as well as lowered the PoPs across the Wasatch Front and Mountains. The cluster tool shows that the overall trend between ensemble runs is a building ridge along the West Coast Friday night through Sunday. Believe the NBM is holding unto precip too along as this ridge builds into the Great Basin. While the EC EPS members supports the NBM, the GFS is much drier and is more in line with the idea of the ridge shutting precip down. Temperatures will be the warmest over southern Utah Friday with readings about 5-10 degrees above normal. Elsewhere, temperatures will be slightly above normal through the extended period as the ridge dominates. && .AVIATION... KSLC...VFR conditions are expected through the TAF period despite some light rain showers in the vicinity between 15 and 19Z. Winds will be WNW at light speeds through this morning then become NW with gusts up to 20 mph possible this afternoon. Cigs will lower to about 6K FT AGL between about 15Z and 19Z which could obscure some mountain tops. Rest of Utah and southwest Wyoming...Light rain and snow will locally obscure mountain tops with MVFR visibilities near the Idaho border early this morning, but will spread as far south as Provo area by late morning. The Wasatch and Uinta mountains will locally be obscured into this afternoon due to snow showers, while south of about Nephi will be VFR. Mountain top winds will be in excess of 40 kts across northern Utah and southwest Wyoming today while winds 30 kts or less will occur farther south. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && SHORT TERM...Church LONG TERM...Struthwolf AVIATION...Struthwolf For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity For frequently asked questions about the Area Forecast Discussion visit... http://weather.gov/saltlakecity/general/afd_faqs.php
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
A peak wind gust of 62 mph was measured at Evanston-Uinta County Airport - Burns Field.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2021Every state in 2021This day in weather historyWarnings in Wyoming, November 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 993676.