Alert archive / Utah / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 2, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 13, 2012, 6:04 PM MDT for Davis County, Salt Lake County, Tooele County, Utah. It was in force for 41 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 13, 2012, 6:04 PM MDT (00:04 UTC)
- Expired
- Jul 13, 2012, 6:45 PM MDT
- In force
- 41 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
Counties Davis County, UT, Salt Lake County, UT, Tooele County, UT
The radar
The Salt Lake City radar (KMTX), 65 km from the middle of the area, began a volume at 00:05 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 13, 6:10 PM MDT | TSTM WND GST 62 | Lake Point, UT | LAKE POINT I-80 - 4301 FT |
| Jul 13, 6:11 PM MDT | TSTM WND GST 65 | Magna, UT | GREAT SALT LAKE MARINA - 4206 FT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 00:00Z, 0.1 hours before the alert went out and 26 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3675 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
102
WUUS55 KSLC 140004
SVRSLC
UTC011-035-045-140045-
/O.NEW.KSLC.SV.W.0002.120714T0004Z-120714T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
604 PM MDT FRI JUL 13 2012
THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN DAVIS COUNTY IN UTAH
SALT LAKE COUNTY IN UTAH
NORTHEASTERN TOOELE COUNTY IN UTAH
* UNTIL 645 PM MDT
* AT 601 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM DELLE TO LAKE POINT TO 15 MILES SOUTHWEST OF COPPERTON...
MOVING NORTHEAST AT 30 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
HERRIMAN... COPPERTON... SOUTH JORDAN... WEST JORDAN... MAGNA...
KEARNS... MIDVALE AND WEST VALLEY CITY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 4045 11209 4068 11212 4071 11222 4055 11220
4049 11229 4042 11230 4061 11230 4077 11280
4101 11270 4108 11241 4094 11202 4083 11192
4085 11173 4078 11165
TIME...MOT...LOC 0003Z 209DEG 27KT 4085 11277 4069 11221
4042 11227
$$
ROGOWSKI2 follow-up statements
800
WWUS55 KSLC 140022
SVSSLC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
622 PM MDT FRI JUL 13 2012
UTC011-035-045-140045-
/O.CON.KSLC.SV.W.0002.000000T0000Z-120714T0045Z/
TOOELE UT-SALT LAKE UT-DAVIS UT-
622 PM MDT FRI JUL 13 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR SOUTHWESTERN DAVIS...SALT LAKE AND NORTHEASTERN TOOELE
COUNTIES...
AT 618 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 36 MILES NORTHWEST OF MAGNA TO 6 MILES NORTHWEST OF
MAGNA TO 6 MILES SOUTHWEST OF COPPERTON...MOVING NORTHEAST AT 35 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
HERRIMAN... COPPERTON... SOUTH JORDAN... WEST JORDAN... MAGNA...
KEARNS... MIDVALE AND WEST VALLEY CITY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.
WINDS UP TO 62 MPH WERE REPORTED AT INTERSTATE 80 AT LAKE POINT WITH
THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY
AWAY FROM WINDOWS!
&&
LAT...LON 4045 11209 4068 11212 4071 11222 4066 11234
4084 11277 4101 11270 4108 11241 4094 11202
4083 11192 4085 11173 4078 11165
TIME...MOT...LOC 0021Z 209DEG 27KT 4097 11268 4081 11212
4054 11218
$$
ROGOWSKI234
WWUS55 KSLC 140045
SVSSLC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
645 PM MDT FRI JUL 13 2012
UTC011-035-045-140055-
/O.EXP.KSLC.SV.W.0002.000000T0000Z-120714T0045Z/
TOOELE UT-SALT LAKE UT-DAVIS UT-
645 PM MDT FRI JUL 13 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DAVIS...SALT LAKE
AND NORTHEASTERN TOOELE COUNTIES HAS EXPIRED...
THE STORM HAS EXITED THE WARNED AREA. THEREFORE THE WARNING HAS BEEN
ALLOWED TO EXPIRE. GUSTY WINDS OF 40 TO 55 MPH ARE STILL EXPECTED
ACROSS THE SALT LAKE VALLEY NORTH TO OGDEN DURING THE NEXT HALF HOUR.
LAT...LON 4045 11209 4068 11212 4071 11222 4066 11234
4084 11277 4101 11270 4108 11241 4094 11202
4083 11192 4085 11173 4078 11165
TIME...MOT...LOC 0045Z 209DEG 27KT 4113 11256 4097 11200
4070 11206
$$
ROGOWSKIThe office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 9:06 AM MDT | Flash Flood Warning | SLC | Washington | 3 hr |
| 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
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.