Alert archive / Utah / Flash Flood Warnings in 2007
Flash Flood Warning 8, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood warning at Jul 25, 2007, 4:43 PM MDT for Tooele County, Utah. It took effect at Jul 25, 2007, 4:48 PM MDT. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 25, 2007, 4:43 PM MDT (22:43 UTC)
- In effect from
- Jul 25, 2007, 4:48 PM MDT
- Expired
- Jul 25, 2007, 7:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
County Tooele County, UT
The radar
The Salt Lake City radar (KMTX), 107 km from the middle of the area, began a volume at 22:45 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 25, 6:20 PM MDT | FLASH FLOOD | 3 W Grantsville, UT | DEBRIS FLOW FROM KIMBELL BURN SCAR CROSSED STATE ROAD 186 WEST OF THE TOWN OF GRANTSVILLE. ROAD CLOSED BY FLOWING MUD AND DEBRIS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Elko, NV (KLKN), launched 12:00Z, 10.7 hours before the alert went out and 102 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1892 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS55 KSLC 252248
FFWSLC
UTC045-260145-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
443 PM MDT WED JUL 25 2007
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL TOOELE COUNTY IN UTAH...
THIS INCLUDES THE CITY OF GRANTSVILLE...
* UNTIL 745 PM MDT
* AT 436 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAINFALL OVER THE KIMBELL FIRE BURN SCAR WHICH IS LOCATED WEST
FROM THE TOWN OF GRANTSVILLE.
* AS A RESULT OF THE INTENSE RAINFALL...A DEBRIS FLOW IS ANTICIPATED
TO FLOW OVER STATE ROAD 138 NEAR MILE MARKERS 4 AND 5...BUT MAY BE
LARGER DEPENDING ON THE AMOUNT OF RAINFALL TO FALL ON THE AREA.
A DEBRIS FLOW IS A VERY DANGEROUS EVENT. THEY TYPICALLY MOVE VERY
FAST AND HAVE THE POTENTIAL FOR GREAT DESTRUCTION. THIS DEBRIS FLOW
IS EXPECTED TO BE SMALL IN SCALE...ONLY AFFECTING STATE ROAD
138...BUT VERY DANGEROUS FOR THOSE WHO MAY VENTURE NEAR THIS AREA.
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 4049 11253 4062 11247 4070 11253 4063 11262
4056 11261
$$
MCINERNEY2 follow-up statements
000
WGUS75 KSLC 260007
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
557 PM MDT WED JUL 25 2007
UTC045-260145-
TOOELE UT-
557 PM MDT WED JUL 25 2007
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR EAST
CENTRAL TOOELE COUNTY...
AT 554 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR HAS ESTIMATED
2 TO 3 INCHES OF PRECIPITATION HAS FALLEN OVER THE KIMBELL BURN
SCAR. REPORTS OF MUDDY WATER FLOWING OUT OF THE BURN AREA HAVE BEEN
RECEIVED. AS OF 6 PM THIS EVENING...CONCENTRATED EFFLUENT IS
CROSSING THE ROAD AND STATE ROAD 138 NORTH OF GRANTSVILLE HAS BEEN
CLOSED.
THIS AREA WILL REMAIN VERY DANGEROUS THROUGHOUT THE NIGHTTIME HOURS
AND SHOULD BE AVOIDED.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
LAT...LON 4049 11253 4062 11247 4070 11253 4063 11262
4056 11261
$$
MCINERNEY000
WGUS75 KSLC 260143
FFSSLC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
739 PM MDT WED JUL 25 2007
UTC045-260149-
TOOELE UT-
739 PM MDT WED JUL 25 2007
...THE FLASH FLOOD WARNING WILL EXPIRE AT 745 PM MDT FOR EAST CENTRAL
TOOELE COUNTY...
HEAVY RAIN HAS TAPERED OFF ACROSS THE WARNING AREA.
HEAVY EQUIPMENT HAS BEEN BROUGHT IN TO REMOVE DEBRIS FLOW
ON STATE ROUTE 138 NEAR GRANTSVILLE. BASEMENT FLOODING
HAS ALSO OCCURRED.
DUE TO THE BURN SCAR AND CONTINUED LIGHT RUNOFF THIS AREA
WILL REMAIN UNSTABLE AND ADDITIONAL FLOWS ARE POSSIBLE.
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 4049 11253 4062 11247 4070 11253 4063 11262
4056 11261
$$
TARDYThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 6:22 PM MDT | Flash Flood Warning | SLC | Rich | 113 min |
| Jul 25, 3:46 PM MDT | Flash Flood Watch | SLC | 8 hr | |
| Jul 25, 4:23 PM MDT | Severe Thunderstorm Warning | SLC | Summit | 38 min |
| Jul 25, 5:58 PM MDT | Severe Thunderstorm Warning | SLC | Davis, Salt Lake | 47 min |
Nearby
Flash Flood Warnings in Utah, 2007Every flash flood warning in 2007
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.