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
- A weak disturbance could bring very light snow to portions of the northern mountains today.
- Dry conditions are expected to be maintained area-wide through much of the extended forecast period.
DISCUSSION
A cold north to northwesterly flow aloft remains in place over Utah this morning. A shortwave trough originating over interior Canada is currently noted near the Canada/Montana border. This trough will carve south and cross northeastern Utah this afternoon. Given the origins of the airmass, expect this trough to remain relatively cold and dry. Light snow may be possible this morning into this afternoon in portions of the northern mountains (but mainly the Uintas), with any accumulations being an inch or less. Temperatures today will remain below normal, with most northern valleys failing to reach 40F once again, while the southern through east-central valleys will mostly see afternoon maxes in the 40-50F range.
A series of weak shortwave disturbances will then continue to cross northern Utah through Tuesday. These will remain weak and contain little moisture and thus precipitation is not expected during this time. However, these disturbances should prevent valley inversions from becoming very strong and as such, temperatures should see a gradual warming trend.
A shortwave ridge is expected to shift overhead by Wednesday. However, another shortwave trough will attempt to dislodge it. Model solutions vary on how successful this will be, but at the very least, deterministics are in decent agreement that the ridge axis will retrograde, allowing the (by this time) weak shortwave trough to graze northeastern Utah. Some models think this would bring some very light precipitation to the area during the late Wednesday through Thursday timeframe, but really, we're just grasping at whatever we can find at this point. The reality is that any amounts will most likely be insignificant, and there really isn't much to see through the entirety of the 7-day forecast and even several days beyond that.
REST OF UTAH AND SOUTHWEST WYOMING
VFR conditions will persist throughout the airspace through the TAF period. Dry and clear conditions are expected with diurnal wind shifts.
SLC WATCHES/WARNINGS/ADVISORIES
UT...None. WY...None.
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