Alert archive / Utah / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 13, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 16, 2012, 7:38 PM MDT for Beaver County, Utah. It was in force for 22 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
- Aug 16, 2012, 7:38 PM MDT (01:38 UTC)
- Expired
- Aug 16, 2012, 8:00 PM MDT
- In force
- 22 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
County Beaver County, UT
The radar
The Cedar City radar (KICX), 89 km from the middle of the area, began a volume at 01:41 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
Salt Lake City I, UT (KSLC), launched 00:00Z, 1.6 hours before the alert went out and 280 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
- 5069 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
058 WUUS55 KSLC 170138 SVRSLC UTC001-170200- /O.NEW.KSLC.SV.W.0013.120817T0138Z-120817T0200Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 738 PM MDT THU AUG 16 2012 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN BEAVER COUNTY IN UTAH * UNTIL 800 PM MDT * AT 732 PM MDT...A THUNDERSTORM PRODUCING WINDS IN EXCESS OF 60 MPH WAS REPORTED NEAR MILFORD...MOVING SOUTHEAST AT 10 MPH. * LOCATIONS IN THE WARNING INCLUDE... MILFORD 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. && LAT...LON 3841 11274 3820 11298 3840 11314 3854 11300 TIME...MOT...LOC 0137Z 308DEG 8KT 3842 11297 $$ MPS
2 follow-up statements
038 WWUS55 KSLC 170146 SVSSLC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 746 PM MDT THU AUG 16 2012 UTC001-170200- /O.CON.KSLC.SV.W.0013.000000T0000Z-120817T0200Z/ BEAVER UT- 746 PM MDT THU AUG 16 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM MDT FOR EASTERN BEAVER COUNTY... AT 745 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR MILFORD...MOVING SOUTHEAST AT 10 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... DAMAGING WINDS UP TO 60 MPH MPH WERE REPORTED IN MILFORD AT 730 PM WITH THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY FROM WINDOWS! && LAT...LON 3841 11274 3820 11298 3840 11314 3854 11300 TIME...MOT...LOC 0146Z 308DEG 8KT 3841 11295 $$ MPS
312 WWUS55 KSLC 170159 SVSSLC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 759 PM MDT THU AUG 16 2012 UTC001-170208- /O.EXP.KSLC.SV.W.0013.000000T0000Z-120817T0200Z/ BEAVER UT- 759 PM MDT THU AUG 16 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BEAVER COUNTY WILL EXPIRE AT 800 PM MDT... THE STORM HAS WEAKENED AND IS NO LONGER SEVERE. THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE. WIND GUSTS UP TO 45 MPH CAN BE EXPECTED IN MINERSVILLE WITH THE OUTFLOW FROM THIS DYING STORM. LAT...LON 3841 11274 3820 11298 3840 11314 3854 11300 TIME...MOT...LOC 0158Z 308DEG 8KT 3839 11292 $$ MPS
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 1:54 PM MDT | Fire Weather Watch | SLC | Beaver, Box Elder, Davis, Iron, Juab, Millard and 5 more | 24 hr |
| Aug 17, 5:45 PM MDT | Areal Flood Advisory | SLC | Iron | 2 hr |
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.