textproduct: Salt Lake City
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- High pressure will bring dry and increasingly mild conditions for the weekend and into early next week.
- There is a high (90%) chance of valley rain and mountain snow next Tuesday/Wednesday.
DISCUSSION
Dry and stable conditions have settled into the area as high pressure builds across the Great Basin. There are some areas of dense fog across Cache Valley and Uinta County, Wyoming given the snowpack. This fog will burn off by mid morning. Otherwise, conditions are very cold across the entire region, but the warming trend will begin today as heights build and temperatures warm aloft.
Temperatures will gradually warm through early next week with high temperatures running about 10F warmer than normal for most locations. Conditions will remain dry and stable through early next week before valley rain and mountain snow return for the northern half of the CWA Tuesday and Wednesday of next week.
A deep elongated trough with a 150 kt jet will become established between Hawaii and the west coast. This will pull moisture into the western CONUS in the form of an atmospheric river by early next week. Cold air will be lacking with this system as zonal flow will remain in place. Snow levels will be between 7000 to 8000 feet. All ensemble members are now on board with bringing accumulating precipitation to the northern half of the CWA with only ~17% of members bringing precipitation to the southern half as well. This moisture will get cut off by a ridge building across the west coast by Thursday and Friday leading to more dry and stable conditions with warmer than normal temperatures.
REST OF UTAH AND SOUTHWEST WYOMING
Patchy dense fog resulting in LIFR to VLIFR conditions will continue around KLGU through 16Z before conditions improve. There is a 30% chance for LIFR or lower conditions in dense fog around KHCR through 16Z as well. Otherwise VFR conditions with light diurnally driven winds can be expected across the area through the TAF period.
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SLC WATCHES/WARNINGS/ADVISORIES
UT...None. WY...None.
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