Alert archive / Utah / Flash Flood Warnings in 2021
Flash Flood Warning 32, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 22, 2021, 3:14 PM MDT for Garfield County, Kane County, Utah. It was in force for 5 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 22, 2021, 3:14 PM MDT (21:14 UTC)
- Expired
- Jul 22, 2021, 8:15 PM MDT
- In force
- 5 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Garfield County, UT, Kane County, UT
The radar
The Cedar City radar (KICX), 140 km from the middle of the area, began a volume at 21:13 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 22, 4:00 PM MDT | FLASH FLOOD | 11 Ene Escalante, UT | FLASH FLOODING IN THE ESCALANTE RIVER AND CALF CREEK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.2 hours before the alert went out and 277 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
- 196 J/kg
- Mixed-layer CIN
- -125 J/kg
- Mixed-layer LCL
- 1415 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
363
WGUS55 KSLC 222114
FFWSLC
UTC017-025-230215-
/O.NEW.KSLC.FF.W.0032.210722T2114Z-210723T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
314 PM MDT Thu Jul 22 2021
The National Weather Service in Salt Lake City has issued a
* Flash Flood Warning for...
South Central Garfield County in southern Utah...
Northeastern Kane County in southern Utah...
* Until 815 PM MDT.
* At 314 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1 inch of rain
has fallen. Additional rainfall of up to 1 inch is possible. Areas
with the heaviest rainfall include the upper Escalante River Basin
and Calf Creek. Flash flooding is ongoing or expected to begin
shortly, with the flood wave continuing well downstream within the
Escalante River through this evening.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Escalante.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3756 11116 3767 11127 3772 11136 3773 11151
3772 11161 3786 11164 3789 11130 3781 11119
3775 11118 3759 11111 3754 11103 3753 11108
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
GM2 follow-up statements
498
WGUS75 KSLC 230044
FFSSLC
Flash Flood Statement
National Weather Service Salt Lake City UT
644 PM MDT Thu Jul 22 2021
UTC017-025-230215-
/O.CON.KSLC.FF.W.0032.000000T0000Z-210723T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Garfield UT-Kane UT-
644 PM MDT Thu Jul 22 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM MDT THIS
EVENING FOR SOUTH CENTRAL GARFIELD AND NORTHEASTERN KANE COUNTIES...
At 644 PM MDT, Between 0.5 and 1.25 inches of rain have fallen
across the upper Escalante River Basin from earlier thunderstorms,
with greatest amounts in the Calf Creek area. Flash flooding is
expected to continue within the Escalante River downstream of these
areas this evening.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
The Escalante River below the town of Escalante.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3756 11116 3767 11127 3772 11136 3773 11151
3772 11161 3786 11164 3789 11130 3781 11119
3775 11118 3759 11111 3754 11103 3753 11108
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
GM778
WGUS75 KSLC 230215
FFSSLC
Flash Flood Statement
National Weather Service Salt Lake City UT
815 PM MDT Thu Jul 22 2021
UTC017-025-230225-
/O.EXP.KSLC.FF.W.0032.000000T0000Z-210723T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Garfield UT-Kane UT-
815 PM MDT Thu Jul 22 2021
...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTH CENTRAL GARFIELD AND
NORTHEASTERN KANE COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat in the upper Escalante River basin. Please continue to heed
remaining road closures.
A Flood Watch remains in effect until 1200 AM MDT for portions of
southern Utah and southwest Utah.
A Flash Flood Watch remains in effect until 1200 AM MDT for a
portion of southern Utah.
LAT...LON 3756 11116 3767 11127 3772 11136 3773 11151
3772 11161 3786 11164 3789 11130 3781 11119
3775 11118 3759 11111 3754 11103 3753 11108
$$
GMThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:41 PM MDT | Flash Flood Warning | SLC | Kane | 6 hr |
| Jul 22, 2:43 AM MDT | Flash Flood Watch | SLC | Emery, Garfield, Kane, Sevier, Washington, Wayne | 20 hr |
| Jul 22, 11:16 AM MDT | Special Weather Statement | SLC | Piute | 29 min |
| Jul 22, 11:41 AM MDT | Special Weather Statement | SLC | 49 min | |
| Jul 22, 11:54 AM MDT | Flood Watch | SLC | Beaver, Garfield, Iron, Kane, Piute, Washington and 1 more | 11 hr |
| Jul 22, 1:02 PM MDT | Special Weather Statement | SLC | Iron | 43 min |
| Jul 22, 1:13 PM MDT | Special Weather Statement | SLC | Garfield | 32 min |
| Jul 22, 1:18 PM MDT | Areal Flood Advisory | SLC | Iron | 117 min |
| Jul 22, 1:20 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | 25 min |
| Jul 22, 1:45 PM MDT | Special Weather Statement | SLC | Kane | 45 min |
| Jul 22, 2:00 PM MDT | Special Weather Statement | SLC | Beaver | 30 min |
| Jul 22, 2:13 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 3 hr |
| Jul 22, 2:13 PM MDT | Severe Thunderstorm Warning | SLC | Beaver | 32 min |
| Jul 22, 2:34 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 3 hr |
| Jul 22, 2:42 PM MDT | Areal Flood Advisory | SLC | Beaver | 2 hr |
| Jul 22, 2:58 PM MDT | Severe Thunderstorm Warning | SLC | Washington | 32 min |
| Jul 22, 3:08 PM MDT | Flash Flood Warning | SLC | Garfield, Wayne | 3 hr |
| Jul 22, 3:14 PM MDT | Special Weather Statement | SLC | Washington | 46 min |
| Jul 22, 3:30 PM MDT | Severe Thunderstorm Warning | SLC | Garfield | |
| Jul 22, 3:46 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 7 hr |
| Jul 22, 4:02 PM MDT | Severe Thunderstorm Warning | SLC | Iron | 28 min |
| Jul 22, 4:15 PM MDT | Special Weather Statement | SLC | Box Elder | 30 min |
| Jul 22, 4:28 PM MDT | Severe Thunderstorm Warning | SLC | Iron | 32 min |
| Jul 22, 4:48 PM MDT | Special Weather Statement | SLC | Washington | 27 min |
| Jul 22, 5:51 PM MDT | Special Weather Statement | SLC | 39 min | |
| Jul 22, 5:58 PM MDT | Flash Flood Warning | SLC | Utah | 3 hr |
Nearby
Flash Flood Warnings in Utah, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.