Alert archive / Utah / Flash Flood Warnings in 2016
Flash Flood Warning 14, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Aug 6, 2016, 3:46 AM MDT for Washington 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 6, 2016, 3:46 AM MDT (09:46 UTC)
- Expired
- Aug 6, 2016, 6:45 AM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
- Flood severity
- None
County Washington County, UT
The radar
The Cedar City radar (KICX), 48 km from the middle of the area, began a volume at 09:48 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
Las Vegas, NV (KVEF), launched 00:00Z, 9.8 hours before the alert went out and 233 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
- 602 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 2908 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
780
WGUS55 KSLC 060946
FFWSLC
UTC053-061245-
/O.NEW.KSLC.FF.W.0014.160806T0946Z-160806T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
346 AM MDT SAT AUG 6 2016
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN WASHINGTON COUNTY IN UTAH...
ZION NATIONAL PARK...
* UNTIL 645 AM MDT
* AT 343 AM MDT...DOPPLER RADAR INDICATED A SERIES OF THUNDERSTORMS
WHICH HAVE BEEN PRODUCING HEAVY RAIN OVER OVER EASTERN WASHINGTON
COUNTY FROM THE TOWN OF HURRICANE INTO ZION NATIONAL PARK. FLASH
FLOODING IS IMMINENT IN THIS AREA.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HURRICANE...LA VERKIN...ZION NATIONAL PARK...TOQUERVILLE...LEEDS...
VIRGIN...SPRINGDALE AND ROCKVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
LAT...LON 3719 11340 3737 11323 3737 11290 3719 11290
3716 11298 3711 11326
$$
ROGOWSKI/TRAPHAGAN2 follow-up statements
377
WGUS75 KSLC 061112
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
512 AM MDT SAT AUG 6 2016
UTC053-061245-
/O.CON.KSLC.FF.W.0014.000000T0000Z-160806T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON UT-
512 AM MDT SAT AUG 6 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM MDT FOR
EASTERN WASHINGTON COUNTY...
AT 510 AM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. THIS MAY BE RESULTING IN FLASH
FLOODING.
SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
HURRICANE...LA VERKIN...ZION NATIONAL PARK...TOQUERVILLE...LEEDS...
VIRGIN...SPRINGDALE AND ROCKVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 3719 11340 3737 11323 3737 11290 3719 11290
3716 11298 3711 11326
$$
ROGOWSKI869
WGUS75 KSLC 061242
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
642 AM MDT SAT AUG 6 2016
UTC053-061252-
/O.EXP.KSLC.FF.W.0014.000000T0000Z-160806T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON UT-
642 AM MDT SAT AUG 6 2016
...THE FLASH FLOOD WARNING FOR EASTERN WASHINGTON COUNTY WILL
EXPIRE AT 645 AM 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 3719 11340 3737 11323 3737 11290 3719 11290
3716 11298 3711 11326
$$
ROGOWSKIThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 7:26 AM MDT | Flash Flood Warning | SLC | Kane | 3 hr |
| Aug 6, 1:38 PM MDT | Special Weather Statement | SLC | Salt Lake | 37 min |
| Aug 6, 2:08 PM MDT | Severe Thunderstorm Warning | SLC | Salt Lake, Utah | 37 min |
| Aug 6, 2:22 PM MDT | Areal Flood Advisory | SLC | Salt Lake | 53 min |
| Aug 6, 2:44 PM MDT | Special Weather Statement | SLC | Salt Lake | 46 min |
Nearby
Flash Flood Warnings in Utah, 2016Every flash flood warning in 2016
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.