Alert archive / Utah / Flash Flood Warnings in 2018
Flash Flood Warning 33, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 17, 2018, 6:30 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 17, 2018, 6:30 PM MDT (00:30 UTC)
- Expired
- Jul 17, 2018, 9:30 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
County Kane County, UT
The radar
The Cedar City radar (KICX), 64 km from the middle of the area, began a volume at 00:32 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 00:00Z, 0.5 hours before the alert went out and 219 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
- 465 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1557 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 42 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
286
WGUS55 KSLC 180030
FFWSLC
UTC025-180330-
/O.NEW.KSLC.FF.W.0033.180718T0030Z-180718T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Salt Lake City UT
630 PM MDT TUE JUL 17 2018
The National Weather Service in Salt Lake City has issued a
* Flash Flood Warning for...
Southwestern Kane County in southern Utah...
* Until 930 PM MDT
* At 628 PM MDT, Doppler radar indicated intense thunderstorms
producing heavy rain over Kanab Creek and the city of Kanab,
tributaries flowing into Kanab Creek, and Johnson Wash. Flash
flooding is imminent.
* Rainfall estimates of up to one inch has fallen in the lower Kanab
Creek Drainage in a short period of time.
* If you are in these locations, take action to ensure safety.
* Some locations that will experience flooding include...
Kanab.
LAT...LON 3722 11222 3700 11234 3700 11271 3720 11271
$$
Dewey/McInerney2 follow-up statements
096 WGUS75 KSLC 180110 FFSSLC Flash Flood Statement National Weather Service Salt Lake City UT 710 PM MDT TUE JUL 17 2018 UTC025-180330- /O.CON.KSLC.FF.W.0033.000000T0000Z-180718T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kane UT- 710 PM MDT TUE JUL 17 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM MDT FOR SOUTHWESTERN KANE COUNTY... At 706 PM MDT, Rainfall continues in the Kanab Creek Drainage. As a result of intense thunderstorms this area has received around an inch of precipitation throughout many parts of the drainage. The combination of intense rainfall and saturated soils from prior flash flooding in the past week, it is anticipated that flash flooding is imminent in the Kanab City region. If you plan on traveling near the lower Kanab Creek area, please be aware of fast moving water or ponding in the roadways around Kanab. Some locations that will experience flooding include... Kanab. LAT...LON 3722 11222 3700 11234 3700 11271 3720 11271 $$ McInerney
350 WGUS75 KSLC 180325 FFSSLC Flash Flood Statement National Weather Service Salt Lake City UT 925 PM MDT TUE JUL 17 2018 UTC025-180335- /O.EXP.KSLC.FF.W.0033.000000T0000Z-180718T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kane UT- 925 PM MDT TUE JUL 17 2018 ...THE FLASH FLOOD WARNING FOR SOUTHWESTERN KANE COUNTY WILL EXPIRE AT 930 PM MDT... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 3722 11222 3700 11234 3700 11271 3720 11271 $$ GM
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 6:31 PM MDT | Flash Flood Warning | SLC | Kane | 3 hr |
| Jul 17, 6:44 PM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| Jul 17, 7:30 PM MDT | Flash Flood Warning | SLC | Kane, Washington | 3 hr |
Nearby
Flash Flood Warnings in Utah, 2018Every flash flood warning in 2018
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.