Alert archive / Utah / Flash Flood Warnings in 2026
Flash Flood Warning 113, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 31, 2026, 3:11 PM MDT for Piute County, Utah. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 31, 2026, 3:11 PM MDT (21:11 UTC)
- Expired
- Aug 31, 2026, 6:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Piute County, UT
The radar
The Cedar City radar (KICX), 90 km from the middle of the area, began a volume at 21:11 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 9.2 hours before the alert went out and 280 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 39 J/kg
- Mixed-layer CIN
- -292 J/kg
- Mixed-layer LCL
- 1883 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
566
WGUS55 KSLC 312111
FFWSLC
UTC031-010015-
/O.NEW.KSLC.FF.W.0113.260831T2111Z-260901T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
311 PM MDT Mon Aug 31 2026
The National Weather Service in Salt Lake City has issued a
* Flash Flood Warning for...
The Cottonwood burn scar Piute in...
West Central Piute County in central Utah...
* Until 615 PM MDT.
* At 311 PM MDT, Emergency management reported flooding and debris
flow on the City Creek drainage and subsequent flooding across
Highway 89 due to heavy rain over the Cottonwood Burn Scar. Between
0.5 and 1 inch of rain has fallen. Flash flooding is ongoing. The
debris flow can consist of rock, mud, vegetation and other loose
materials.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding in and around the Cottonwood Burn Scar.
SOURCE...Emergency management reported.
IMPACT...Life threatening flash flooding of areas in and around the
Cottonwood Burn Scar, especially the City Creek drainage.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a life threatening situation. Heavy rainfall will cause
extensive and severe flash flooding of creeks...streams...and ditches
in the Cottonwood Burn Scar. Severe debris flows can also be
anticipated across roads. Roads and driveways may be washed away in
places. If you encounter flood waters...climb to safety.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3831 11234 3831 11233 3827 11231 3828 11231
3826 11225 3826 11221 3825 11220 3826 11228
3827 11230 3824 11235 3825 11238 3829 11234
3830 11235 3831 11235
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
AD1 follow-up statement
921
WGUS75 KSLC 010013
FFSSLC
Flash Flood Statement
National Weather Service Salt Lake City UT
613 PM MDT Mon Aug 31 2026
UTC031-010023-
/O.EXP.KSLC.FF.W.0113.000000T0000Z-260901T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Piute UT-
613 PM MDT Mon Aug 31 2026
...FLASH FLOOD WARNING FOR THE COTTONWOOD BURN SCAR WILL EXPIRE AT
615 PM MDT THIS EVENING FOR WEST CENTRAL PIUTE COUNTY...
The heavy rain has ended and flows have decreased.
A Flood Watch remains in effect until 900 PM MDT for portions of
central, southern, and southwest Utah.
&&
LAT...LON 3831 11234 3831 11233 3827 11231 3828 11231
3826 11225 3826 11221 3825 11220 3826 11228
3827 11230 3824 11235 3825 11238 3829 11234
3830 11235 3831 11235
$$
ADThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 6:23 PM MDT | Special Weather Statement | SLC | Duchesne | 52 min |
| Aug 30, 7:07 PM MDT | Special Weather Statement | SLC | Duchesne | 38 min |
| Aug 31, 6:37 AM MDT | Flash Flood Warning | SLC | Kane | 4 hr |
| Aug 31, 9:50 AM MDT | Flash Flood Warning | SLC | Garfield | 3 hr |
| Aug 31, 10:19 AM MDT | Flash Flood Warning | SLC | Garfield, Wayne | 3 hr |
| Aug 31, 10:46 AM MDT | Flash Flood Warning | SLC | Emery, Wayne | 4 hr |
| Aug 31, 10:59 AM MDT | Special Weather Statement | SLC | Iron | 46 min |
| Aug 31, 11:04 AM MDT | Flash Flood Warning | SLC | Garfield, Kane | 14 hr |
| Aug 31, 11:16 AM MDT | Flash Flood Warning | SLC | Kane, Washington | 5 hr |
| Aug 31, 11:21 AM MDT | Special Weather Statement | SLC | 39 min | |
| Aug 31, 11:27 AM MDT | Special Weather Statement | SLC | Washington | 48 min |
| Aug 31, 11:47 AM MDT | Areal Flood Advisory | SLC | Washington | 3 hr |
| Aug 31, 11:51 AM MDT | Severe Thunderstorm Warning | SLC | Garfield, Iron, Kane | 24 min |
| Aug 31, 12:04 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 41 min |
| Aug 31, 12:06 PM MDT | Special Weather Statement | SLC | Washington | 39 min |
| Aug 31, 12:07 PM MDT | Special Weather Statement | SLC | Millard | 38 min |
| Aug 31, 12:16 PM MDT | Special Weather Statement | SLC | 44 min | |
| Aug 31, 12:20 PM MDT | Flash Flood Warning | SLC | Garfield | 3 hr |
| Aug 31, 1:00 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 3 hr |
| Aug 31, 1:05 PM MDT | Special Weather Statement | SLC | Kane | 40 min |
| Aug 31, 1:10 PM MDT | Special Weather Statement | SLC | 50 min | |
| Aug 31, 1:16 PM MDT | Special Weather Statement | SLC | Kane | 44 min |
| Aug 31, 1:43 PM MDT | Special Weather Statement | SLC | Beaver | 47 min |
| Aug 31, 1:45 PM MDT | Severe Thunderstorm Warning | SLC | Juab, Millard | 45 min |
| Aug 31, 1:48 PM MDT | Flash Flood Warning | SLC | Garfield | 10 hr |
| Aug 31, 1:52 PM MDT | Flash Flood Warning | SLC | Piute | 3 hr |
| Aug 31, 2:04 PM MDT | Special Weather Statement | SLC | 41 min | |
| Aug 31, 2:22 PM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| Aug 31, 2:30 PM MDT | Special Weather Statement | SLC | Iron | 45 min |
| Aug 31, 2:30 PM MDT | Severe Thunderstorm Warning | SLC | Juab, Millard | 45 min |
| Aug 31, 2:40 PM MDT | Special Weather Statement | SLC | Salt Lake | 35 min |
| Aug 31, 3:13 PM MDT | Special Weather Statement | SLC | Juab | 32 min |
| Aug 31, 3:39 PM MDT | Areal Flood Advisory | SLC | Garfield | 3 hr |
| Aug 31, 3:41 PM MDT | River Flood Advisory | SLC | Washington | 8 hr |
| Aug 31, 3:58 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 9 hr |
| Aug 31, 4:39 PM MDT | Special Weather Statement | SLC | Salt Lake | 51 min |
| Aug 31, 4:57 PM MDT | Special Weather Statement | SLC | Wayne | 33 min |
| Aug 31, 5:36 PM MDT | Special Weather Statement | SLC | Davis, Weber | 24 min |
| Aug 31, 5:41 PM MDT | Special Weather Statement | SLC | Tooele | 34 min |
| Aug 31, 5:53 PM MDT | Severe Thunderstorm Warning | SLC | Box Elder, Tooele | 37 min |
Nearby
Flash Flood Warnings in Utah, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.