textproduct: Western and Central Wyoming

KEY MESSAGES

- A weather system to the south of WY brings periods of clouds and rain shower chances (20-30%) to Lincoln and Sweetwater Counties through the day today. Little to no impacts expected with these showers.

- Overall dry conditions and light winds with seasonable temperatures continue through the rest of the week. Above normal temperatures expected starting Sunday into the middle of next week.

DISCUSSION

Issued at 121 AM MST Wed Nov 4 2026

Conditions remain quiet this morning, as high clouds have moved over areas west of the Divide in the last several hours since Tuesday evening. These are due to a closed low pressure system that is moving over northern UT currently and will continue to track eastward through the day today. Isolated light rain showers will be possible along and south of a Afton-to-Rock Springs line this afternoon as this system moves over CO. Little to no impacts will occur due to a lack of instability and any possible measurable precipitation is likely to occur closer to the low center over southern Sweetwater County. Otherwise, conditions will be benign across the CWA with seasonal temperatures and light winds. These conditions will be in place again Thursday as an area of high pressure shifts over eastern MT/the weather Dakotas. Above normal temperatures will return for much of Johnson County as a result.

A trough will move over the region on Friday, shifting the area of high pressure over the Dakotas and Upper Midwest. No significant impacts are expected with the passage of the trough, however the GFS is progging a low chance for rain over northern portions. A broad ridge will then build over much of the Intermountain West and extend over the Northern Rockies by Saturday keeping conditions dry. Temperatures then trend above normal across the CWA by Sunday and remain in place through the middle of next week as the ridge folds over. Conditions also look to stay dry through this period, with a weak trough possibly moving over the area on Tuesday.

AVIATION /06Z TAFS THROUGH 06Z THURSDAY/

Issued at 930 PM MST Tue Nov 3 2026

VFR conditions expected at all TAF sites for the entirety of the period. Mainly high clouds throughout the period, with lower mid level ceilings at KRKS by 12Z with a few passing showers to the west, carrying VCSH (<10%) through 15Z. Thereafter, upper level clouds remain into Wednesday night. Light winds throughout 10kts or less, lighter after sunset by 00Z Wednesday evening. Otherwise, mainly dry with no other weather elements expected.

Please see the Aviation Weather Center and/or CWSU ZDV and ZLC for the latest information on smoke, icing, and turbulence forecasts.

RIW WATCHES/WARNINGS/ADVISORIES

None.