# Extreme Heat Watch: Great Salt Lake Desert and Mountains; Tooele and Rush Valleys; Eastern Box Elder County; Northern Wasatch Front; Salt Lake Valley; Utah Valley; Cache Valley/Utah Portion; Wasatch Back; Western Uinta Basin; Western Millard and Juab Counties; Eastern Juab/Millard Counties; Sanpete Valley; Sevier Valley; Castle Country; San Rafael Swell; Southwest Utah; South Central Utah; Capitol Reef National Park and Vicinity; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/da5b5f817ed2bdd6

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-07-08 10:37 ingested 2026-07-09 09:41

[original source ↗](http://www.weather.gov/)

## extract

Extreme Heat Watch — Great Salt Lake Desert and Mountains; Tooele and Rush Valleys; Eastern Box Elder County; Northern Wasatch Front; Salt Lake Valley; Utah Valley; Cache Valley/Utah Portion; Wasatch Back; Western Uinta Basin; Western Millard and Juab Counties; Eastern Juab/Millard Counties; Sanpete Valley; Sevier Valley; Castle Country; San Rafael Swell; Southwest Utah; South Central Utah; Capitol Reef National Park and Vicinity; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell
Severity: Severe. Certainty: Likely.
* WHAT...Dangerously hot conditions with temperatures up to 105
possible for the valleys of northern Utah, including the Wasatch
Front and Cache Valley along with south central Utah, including
Kanab. Highs around 100 possible for the mountain valleys of
northern and central Utah, including the Wasatch Back, along with
southwest Utah, including Cedar City, Castle Country, the Uinta
Basin, and the San Rafael Swell. Highs up to 110 for Glen Canyon
Recreation Area.

* WHERE...Many valleys and mountain valleys across Utah, including
the Wasatch Front, the Wasatch Back, Cache Valley, Northwest
Desert, West Central Utah, the Uinta Basin, Castle Country, the
San Rafael Swell, Sanpete and Sevier Valleys, South Central Utah,
Capitol Reef National Park, and the Glen Canyon Recreation Area.

* WHEN...From Saturday afternoon through Sunday evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...There is high confidence that temperatures
will warm to values challenging daily and monthly high temperature
records Saturday afternoon as high pressure builds. Overnight lows
in the lower to mid 70s for many valley locations will provide
little in the way of overnight relief before the exceptionally hot
temperatures return Sunday.

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.