Key facts
- Alert
- Flash Flood Warning (severe)
- Issued by
- National Weather Service, Salt Lake City UT
- Areas
- Iron, UT; Kane, UT; Washington, UT
- Places
- Zion National Park, Springdale, Rockville
- In effect
- until 8:00 PM MDT, Oct 21, 2026
- Damage threat
- Considerable
- Detection
- Radar indicated
What the National Weather Service says
“Move to higher ground now. Act quickly to protect your life.”
NWS Salt Lake City UT, Flash Flood Warning, 7:04 PM MDT Oct 21, 2026 · official alert
“Stay away or be swept away.”
NWS Salt Lake City UT, Flash Flood Warning, 7:04 PM MDT Oct 21, 2026 · official alert
“Campers and hikers should avoid streams or creeks.”
NWS Salt Lake City UT, Flash Flood Warning, 7:04 PM MDT Oct 21, 2026 · official alert
What to do
Move to higher ground now. If you are in or near Zion Canyon, Springdale or Rockville, get away from streams, creeks, washes and slot canyons right away.
Campers and hikers should stay out of streams and creeks. River banks and culverts can become unstable and unsafe.
Do not drive around barricades or into flooded roads. The National Weather Service says just 6 inches of moving water can knock you down, and 1 foot of moving water can sweep a vehicle away.
The warning runs until 8:00 PM MDT, and the National Weather Service says more thunderstorms remain likely over the next several hours. Check for updates from the National Weather Service.
Context
The warning was issued at 5:01 PM MDT on Wednesday, October 21, 2026. The National Weather Service rates the damage threat as considerable, and the warning is based on radar indications.
FEMA flood-insurance claim counts cover only insured properties, so they understate total flood losses. Washington County has 64 claims from 1978 to 2026, Iron County has 23 from 1979 to 2023, and Kane County has 8 from 2003 to 2025. All three counties have had federal flood-related disaster declarations, most recently Iron County in December 2023.
Updates
- The flash flood warning expired at 8:00 PM MDT.
- The National Weather Service updated the flash flood warning; it remains in effect until 8:00 PM MDT.
- NWS Salt Lake City UT issued the flash flood warning until 8:00 PM MDT.
History here
Iron County: 23 flood insurance claims in FEMA's National Flood Insurance Program records since 1979, most recent 2023.
Iron County: recent federal disaster declarations
- DR-4752 (2023): flooding
Kane County: 8 flood insurance claims in FEMA's National Flood Insurance Program records since 2003, most recent 2025.
Kane County: recent federal disaster declarations
- DR-1955 (2011): severe winter storm and flooding
Washington County: 64 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.
Washington County: recent federal disaster declarations
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Questions
- Is there a flash flood warning in Zion National Park, Utah?
- Yes. The National Weather Service in Salt Lake City issued a Flash Flood Warning at 5:01 PM MDT that includes Zion National Park, Springdale and Rockville, until 8:00 PM MDT.
- Which counties are under the flash flood warning?
- The warning covers southeastern Iron County, west central Kane County and east central Washington County in Utah.
- How much rain is expected in the warned area?
- Radar showed up to 0.25 inches had fallen at 5:01 PM MDT. The National Weather Service says 0.25 to 0.75 inches more is possible with the current storm, and additional thunderstorms remain likely over the next several hours.
Sources
- NWS Salt Lake City UT: Flash Flood Warning, Oct 21, 2026 weather.gov
- FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov
How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.