textproduct: Salt Lake City

KEY MESSAGES, Issued 1046 PM MDT Tue Jun 30 2026

- Locally or marginally critical to critical fire weather conditions will continue through the week for areas of central, eastern, and southern Utah with the strongest and most widespread winds on Friday.

- Temperatures will continue to trend warmer through the rest of the week and into next week, peaking during the first half of next week when afternoon maxes will rise to 4-8 degrees above normal.

DISCUSSION, Issued 1046 PM MDT Tue Jun 30 2026

A mean longwave trough remains in place over the western CONUS this evening. An embedded shortwave trough crossed Utah today and is currently ejecting northeast into Colorado and Wyoming. Showers associated with this shortwave trough earlier today have mostly dissipated and as such, can expect mostly clear skies across a majority of the forecast area tonight. Additionally, gusty winds associated with said shortwave also produced critical fire weather conditions across portions of east- central Utah today. The winds have since decreased as well, and the Red Flag Warning has been allowed to expire.

Through the rest of the week, the mean longwave trough will remain settled nearly in place. Additional weak embedded disturbances will continue to eject out of this longwave trough, some of these crossing southern Utah and others grazing northern Utah, but all weaker than the one that crossed the area today. This unsettled pattern will maintain a few generally weak showers and thunderstorms across mainly northern Utah through at least Friday.

With southwesterly flow remaining in place, at least localized to marginally critical fire weather conditions will continue through the week across east-central Utah. These conditions may become more widespread by Friday which may warrant consideration for fire weather highlights on future shifts.

Otherwise, expect temperatures to gradually trend warmer through the week. By the weekend, the mean longwave trough is forecast to weaken, leaving Utah in more of a weak zonal flow pattern before transitioning to high pressure centered near the Four Corners area for the first half of next week. Temperatures over the next 7 days are likely to be warmest under this high pressure (25% chance of reaching 100 degrees at SLC Monday and Tuesday), especially since significant monsoonal moisture is not forecast to make it into the area yet. Many valley areas will see high temperatures in the mid to upper 90s (over 100 degrees in Lower Washington County and the Lake Powell area) during the first half of next week, which would be around 4-8 degrees above normal for this time of year.

AVIATION, Issued 1046 PM MDT Tue Jun 30 2026

KSLC, Issued 1046 PM MDT Tue Jun 30 2026... Southeast winds under clear skies will persist overnight through Wednesday morning, with south winds becoming gusty around 16Z. These south winds will likely persist through the afternoon with a 40% chance of a wind shift to northwesterly during the 23-01Z timeframe.

REST OF UTAH AND SOUTHWEST WYOMING...Clear skies and light winds will prevail across the area overnight. VFR conditions with general south to southwest winds can be expected across the area Wednesday. Scattered showers and thunderstorms will develop across northern Utah Wednesday afternoon. The chance one of these storms impact a northern terminal is less than 20%.

FIRE WEATHER

Deep southwest flow will remain in place through at least the weekend across Utah. Conditions will become increasingly dry, with overnight recoveries becoming poor to very poor Friday into the weekend. Expect elevated to locally critical conditions each afternoon and evening, particularly across eastern and southern Utah through at least Saturday.

Mid-level moisture may increase Monday into Tuesday, allowing for a period of high-based convection after a hot, dry stretch. Something to monitor moving forward.

SLC WATCHES/WARNINGS/ADVISORIES

UT...None. WY...None.