Alert archive / Utah / Flash Flood Warnings in 2021
Flash Flood Warning 15, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 16, 2021, 1:27 PM MDT for Kane 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
- Jul 16, 2021, 1:27 PM MDT (19:27 UTC)
- Expired
- Jul 16, 2021, 4:30 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Kane County, UT
The radar
The Cedar City radar (KICX), 70 km from the middle of the area, began a volume at 19:29 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 7.5 hours before the alert went out and 249 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
- 487 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1090 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
056
WGUS55 KSLC 161927
FFWSLC
UTC025-162230-
/O.NEW.KSLC.FF.W.0015.210716T1927Z-210716T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
127 PM MDT Fri Jul 16 2021
The National Weather Service in Salt Lake City has issued a
* Flash Flood Warning for...
North Central Kane County in southern Utah...
* Until 430 PM MDT.
* At 127 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 0.75 inches of
rain have fallen. Flash flooding is ongoing or expected to begin
shortly.
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 headwaters of the Paria River including Bull Valley Gorge and
Willis Creek
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3748 11212 3749 11208 3746 11205 3742 11203
3742 11204 3744 11208 3743 11210 3744 11212
3746 11212 3747 11212
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
SW2 follow-up statements
690
WGUS75 KSLC 162114
FFSSLC
Flash Flood Statement
National Weather Service Salt Lake City UT
314 PM MDT Fri Jul 16 2021
UTC025-162230-
/O.CON.KSLC.FF.W.0015.000000T0000Z-210716T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
314 PM MDT Fri Jul 16 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM MDT THIS
AFTERNOON FOR NORTH CENTRAL KANE COUNTY...
At 314 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 0.7 and 0.90 inches of rain
have fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
the headwaters of the Paria River including Bull Valley Gorge and
Willis Creek
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3748 11212 3749 11208 3746 11205 3742 11203
3742 11204 3744 11208 3743 11210 3744 11212
3746 11212 3747 11212
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
SW604
WGUS75 KSLC 162225
FFSSLC
Flash Flood Statement
National Weather Service Salt Lake City UT
425 PM MDT Fri Jul 16 2021
UTC025-162235-
/O.EXP.KSLC.FF.W.0015.000000T0000Z-210716T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kane UT-
425 PM MDT Fri Jul 16 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 430 PM MDT THIS AFTERNOON FOR
NORTH CENTRAL KANE COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3748 11212 3749 11208 3746 11205 3742 11203
3742 11204 3744 11208 3743 11210 3744 11212
3746 11212 3747 11212
$$
SWThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 6:35 PM MDT | Special Weather Statement | SLC | Salt Lake | 40 min |
| Jul 15, 7:08 PM MDT | Severe Thunderstorm Warning | SLC | Iron | 52 min |
| Jul 15, 8:39 PM MDT | Flash Flood Warning | SLC | Beaver, Iron | 3 hr |
| Jul 16, 12:39 AM MDT | Flash Flood Warning | SLC | Kane, Washington | 3 hr |
| Jul 16, 1:05 AM MDT | Flash Flood Warning | SLC | Kane, Washington | 3 hr |
| Jul 16, 1:09 AM MDT | Areal Flood Advisory | SLC | Washington | 3 hr |
| Jul 16, 1:07 PM MDT | Special Weather Statement | SLC | Kane | 38 min |
| Jul 16, 1:58 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 3 hr |
| Jul 16, 3:20 PM MDT | Special Weather Statement | SLC | 40 min | |
| Jul 16, 3:47 PM MDT | Flash Flood Warning | SLC | Garfield, Kane | 3 hr |
| Jul 16, 4:46 PM MDT | Special Weather Statement | SLC | Millard | 44 min |
| Jul 16, 5:04 PM MDT | Severe Thunderstorm Warning | SLC | Millard | 56 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.