Alert archive / Utah / Flash Flood Warnings in 2012
Flash Flood Warning 6, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 14, 2012, 9:06 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
- Jul 14, 2012, 9:06 AM MDT (15:06 UTC)
- Expired
- Jul 14, 2012, 12:00 PM 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), 40 km from the middle of the area, began a volume at 15:06 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 12:00Z, 3.1 hours before the alert went out and 238 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
- 372 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1206 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
671
WGUS55 KSLC 141506
FFWSLC
UTC053-141800-
/O.NEW.KSLC.FF.W.0006.120714T1506Z-120714T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
906 AM MDT SAT JUL 14 2012
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL WASHINGTON COUNTY IN UTAH
* UNTIL NOON MDT
* AT 901 AM MDT..NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAIN FROM A SERIES OF THUNDERSTORMS HAS OCCURRED OVER THE
NORTH CREEK AND DRY CREEK DRAINAGES IN EAST CENTRAL WASHINGTON
COUNTY.
* FLASH FLOODING IS EXPECTED ALONG THE NORTH CREEK AND DRY CREEK
DRAINAGES FROM THE HEADWATERS THROUGH TO THE CONFLUENCE WITH THE
VIRGIN RIVER. THIS INCLUDES THE SUBWAY AREA IN ZION NATIONAL PARK.
OFFICIALS WITHIN ZION NATIONAL PARK HAVE REPORTED SIGNIFICANT RISES
ALONG AREA CREEKS AND SOME WATER COVERING ROADWAYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3736 11319 3737 11303 3730 11301 3718 11312
3720 11322
$$
KRUSE2 follow-up statements
519
WGUS75 KSLC 141632
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1032 AM MDT SAT JUL 14 2012
UTC053-141800-
/O.CON.KSLC.FF.W.0006.000000T0000Z-120714T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON UT-
1032 AM MDT SAT JUL 14 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL NOON MDT FOR EAST
CENTRAL WASHINGTON COUNTY...
AT 1026 AM MDT...HEAVY RAIN HAS LARGELY ENDED FOR THE TIME BEING
OVER EAST CENTRAL WASHINGTON COUNTY. THIS WARNING INCLUDES THE LEFT
AND RIGHT FORK OF NORTH CREEK IN ZION NATIONAL PARK AS WELL AS DRY
CREEK FROM THE HEADWATERS TO THE CONFLUENCE WITH THE VIRGIN RIVER.
THIS ALSO INCLUDES THE SUBWAY AREA OF ZION NATIONAL PARK.
WHILE THE HEAVY RAIN HAS ENDED...RUNOFF AND RESULTANT FLASH FLOODING
WILL CONTINUE THROUGH NOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3736 11319 3737 11303 3730 11301 3718 11312
3720 11322
$$
KRUSE950
WGUS75 KSLC 141804
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1204 PM MDT SAT JUL 14 2012
UTC053-141813-
/O.EXP.KSLC.FF.W.0006.000000T0000Z-120714T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON UT-
1204 PM MDT SAT JUL 14 2012
...THE FLASH FLOOD WARNING HAS EXPIRED FOR EAST CENTRAL WASHINGTON
COUNTY...
HEAVY RAINFALL HAS ENDED ACROSS ZION NATIONAL PARK...AND REPORTS
INDICATE FLOODING HAS ENDED. THUS THE FLASH FLOOD WARNING HAS BEEN
ALLOWED TO EXPIRE.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
LAT...LON 3736 11319 3737 11303 3730 11301 3718 11312
3720 11322
$$
MPSThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 6:04 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Salt Lake, Tooele | 41 min |
| Jul 13, 6:33 PM MDT | Special Weather Statement | SLC | Davis | 42 min |
| Jul 13, 7:09 PM MDT | Special Weather Statement | SLC | Rich | 51 min |
| Jul 14, 11:31 AM MDT | Areal Flood Advisory | SLC | Washington | 119 min |
| Jul 14, 4:30 PM MDT | Special Weather Statement | SLC | Rich | 60 min |
Nearby
Flash Flood Warnings in Utah, 2012Every flash flood warning in 2012
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.