Alert archive / Utah / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 29, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Sep 1, 2012, 6:34 PM MDT for Tooele County, Utah. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 1, 2012, 6:34 PM MDT (00:34 UTC)
- Expired
- Sep 1, 2012, 7:19 PM MDT
- In force
- 45 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
County Tooele County, UT
The radar
The Salt Lake City radar (KMTX), 99 km from the middle of the area, began a volume at 00:35 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 1, 12:59 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 00:00Z, 0.6 hours before the alert went out and 72 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
- 2 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 2652 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- -67 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
875
WUUS55 KSLC 020034
SVRSLC
UTC045-020130-
/O.NEW.KSLC.SV.W.0029.120902T0034Z-120902T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
634 PM MDT SAT SEP 1 2012
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL TOOELE COUNTY IN UTAH
* UNTIL 730 PM MDT
* AT 630 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HALF DOLLAR
SIZE HAIL. THE STRONGEST STORMS WERE LOCATED 5 MILES SOUTHWEST OF
GRANTSVILLE...AND 6 MILES SOUTH OF DUGWAY...AND ARE MOVING
NORTHEAST AT 20 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
GRANTSVILLE... STANSBURY PARK... TOOELE...
DUGWAY... VERNON... FAUST AND RUSH VALLEY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH
AND/OR LARGE HAIL AT LEAST ONE INCH IN DIAMETER. FOR YOUR
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
SATURDAY EVENING FOR CENTRAL UTAH AND SOUTHWEST WYOMING.
&&
LAT...LON 4061 11253 4062 11221 4011 11221 4003 11293
4030 11298
TIME...MOT...LOC 0032Z 243DEG 17KT 4017 11273
$$
MPS2 follow-up statements
035
WWUS55 KSLC 020052
SVSSLC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
652 PM MDT SAT SEP 1 2012
UTC045-020130-
/O.CON.KSLC.SV.W.0029.000000T0000Z-120902T0130Z/
TOOELE UT-
652 PM MDT SAT SEP 1 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT
FOR EAST CENTRAL TOOELE COUNTY...
AT 649 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A PAIR OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HALF
DOLLAR SIZE HAIL. ONE STORM WAS LOCATED NEAR GRANTSVILLE...WHILE THE
SECOND WAS LOCATED 10 MILES SOUTHWEST OF THE RUSH VALLEY...OR ABOUT
7 MILES SOUTHEAST OF DUGWAY. THESE STORMS WERE MOVING NORTHEAST AT
20 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
GRANTSVILLE... STANSBURY PARK AND TOOELE...
VERNON... FAUST AND RUSH VALLEY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
SATURDAY EVENING FOR CENTRAL UTAH AND SOUTHWEST WYOMING.
&&
LAT...LON 4061 11253 4062 11221 4011 11221 4007 11257
4051 11264
TIME...MOT...LOC 0051Z 243DEG 17KT 4021 11263
$$
MPS502
WWUS55 KSLC 020119
SVSSLC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
719 PM MDT SAT SEP 1 2012
UTC045-020129-
/O.CAN.KSLC.SV.W.0029.000000T0000Z-120902T0130Z/
TOOELE UT-
719 PM MDT SAT SEP 1 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL TOOELE COUNTY IS
CANCELLED...
THE STORM HAS EXITED THE WARNED AREA. THEREFORE THE WARNING HAS BEEN
CANCELLED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
SATURDAY EVENING FOR CENTRAL UTAH AND SOUTHWEST WYOMING.
LAT...LON 4061 11253 4062 11221 4011 11221 4007 11257
4051 11264
TIME...MOT...LOC 0119Z 243DEG 17KT 4027 11248
$$
MPSThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 6:27 PM MDT | Severe Thunderstorm Warning | SLC | Morgan, Rich, Summit, Weber | 63 min |
| Sep 1, 6:56 PM MDT | Special Weather Statement | SLC | Salt Lake | 49 min |
| Sep 1, 7:07 PM MDT | Severe Thunderstorm Warning | SLC | Utah | 53 min |
| Sep 1, 7:53 PM MDT | Areal Flood Advisory | SLC | Utah | 3 hr |
| Sep 2, 4:32 PM MDT | Flash Flood Warning | SLC | Garfield, Wayne | 3 hr |
| Sep 2, 4:40 PM MDT | Special Weather Statement | SLC | Garfield | 50 min |
| Sep 2, 5:28 PM MDT | Special Weather Statement | SLC | Wayne | 47 min |
Nearby
Severe Thunderstorm Warnings in Utah, 2012Every severe thunderstorm 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.