Flash Flood Warning Issued for Kane and Washington Counties, Utah (Aug 31, 2026, 5:16 PM UTC)

Source: NOAA · Southern Utah

This alert is no longer in effect.

NOAA issued it on August 31, 2026, 2 weeks ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).

Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.

NWS Salt Lake City has issued a Flash Flood Warning for parts of southern Utah until 2:15 PM MDT on August 31.

30 seconds on this weather notice

Record type
Flash Flood Warning
Affected area
Southern Utah
Issued
August 31, 2026
Issuing authority
NWS Salt Lake City UT

Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.

Record status: historical. It was issued 2 weeks ago; use the issuing agency's live warning service for current conditions in Southern Utah.

Alert Details

Flash Flood Warning issued by NWS Salt Lake City UT. Effective from 11:16 AM MDT August 31, 2026, until 2:15 PM MDT August 31, 2026. Severity: Severe. Urgency: Immediate. Certainty: Likely.

Affected Areas

West Central Kane County in southern Utah and East Central Washington County in southwestern Utah. Locations include Zion National Park (the Subway, the Narrows) and all slot canyons, creeks, normally dry washes and slot canyons in the warning area.

What You Should Do

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Remain alert for flooding even in locations not receiving rain. Dry washes, streams, and rivers can become raging killer currents in a matter of minutes, even from distant rainfall.

Expected Conditions

Doppler radar indicated thunderstorms producing heavy rain across the warned area. Life threatening flash flooding of slot canyons, normally dry washes, streams, creeks, and rivers is ongoing or expected to begin shortly.

Timeline

Alert effective August 31, 2026, from 11:16 AM MDT until 2:15 PM MDT.

Original source: NOAA Official Notice ↗

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Comparable nationwide notices (length or severity timing) 8

Two cross-category peer sets, both computed from Areazine's own archive: notices with a similar body length, and notices near the same severity and agency date. These are drawn from other categories, not the same-feed Related list above.

Questions & Answers

Questions readers often have about this NWS weather alert.

What is this NWS weather alert about?
NWS Salt Lake City has issued a Flash Flood Warning for parts of southern Utah until 2:15 PM MDT on August 31.
Which agency issued this alert?
This alert was issued by NOAA. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "high" severity. Take precautions and monitor for updates.
What area is affected?
This alert affects Southern Utah. Check with NOAA for the most current geographic scope.
Where can I find more Weather Alerts updates?
Browse the full Weather Alerts feed on Areazine at areazine.com/weather/ for the latest updates from NOAA and other agencies.