Alert archive / Utah / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 41, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 7, 2011, 1:48 PM MDT for Duchesne County, Utah. It was in force for 42 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
- Jul 7, 2011, 1:48 PM MDT (19:48 UTC)
- Expired
- Jul 7, 2011, 2:30 PM MDT
- In force
- 42 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
County Duchesne County, UT
The radar
The Grand Junction radar (KGJX), 206 km from the middle of the area, began a volume at 19:52 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 12:00Z, 7.8 hours before the alert went out and 161 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
- 2714 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
418 WUUS55 KSLC 071948 SVRSLC UTC013-072030- /O.NEW.KSLC.SV.W.0041.110707T1948Z-110707T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 148 PM MDT THU JUL 7 2011 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL DUCHESNE COUNTY IN UTAH * UNTIL 230 PM MDT * AT 142 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER SOUTH CENTRAL DUCHESNE COUNTY...OR 9 MILES SOUTH OF DUCHESNE... MOVING EAST AT 15 MPH. * LOCATIONS IN THE WARNING INCLUDE... RURAL SOUTHERN DUCHESNE COUNTY 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 4014 11004 3987 11009 3997 11055 4015 11052 TIME...MOT...LOC 1947Z 276DEG 12KT 4005 11041 $$ KRUSE
2 follow-up statements
674 WWUS55 KSLC 072002 SVSSLC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 202 PM MDT THU JUL 7 2011 UTC013-072030- /O.CON.KSLC.SV.W.0041.000000T0000Z-110707T2030Z/ DUCHESNE UT- 202 PM MDT THU JUL 7 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR SOUTH CENTRAL DUCHESNE COUNTY... AT 200 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER CENTRAL DUCHESNE COUNTY...OR ABOUT 8 MILES SOUTH OF DUCHESNE...MOVING EAST AT 20 MPH. * LOCATIONS IN THE WARNING INCLUDE... RURAL SOUTHERN DUCHESNE COUNTY LAT...LON 4014 11004 3993 11007 4001 11046 4015 11043 TIME...MOT...LOC 2002Z 262DEG 16KT 4007 11033 $$ KRUSE
361 WWUS55 KSLC 072015 SVSSLC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 215 PM MDT THU JUL 7 2011 UTC013-072030- /O.CON.KSLC.SV.W.0041.000000T0000Z-110707T2030Z/ DUCHESNE UT- 215 PM MDT THU JUL 7 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR SOUTH CENTRAL DUCHESNE COUNTY... AT 212 PM MDT... CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER CENTRAL DUCHESNE COUNTY...OR ABOUT 10 MILES SOUTHEAST OF DUCHESNE... MOVING EAST AT 20 MPH. * LOCATIONS IN THE WARNING INCLUDE... RURAL SOUTHEASTERN DUCHESNE COUNTY LAT...LON 3996 11007 4000 11039 4015 11038 4014 11004 TIME...MOT...LOC 2015Z 262DEG 16KT 4010 11022 $$ KRUSE
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 9:06 PM MDT | Flash Flood Watch | SLC | 4 hr | |
| Jul 7, 2:05 PM MDT | Areal Flood Advisory | SLC | Utah, Wasatch | 3 hr |
| Jul 7, 2:10 PM MDT | Special Weather Statement | SLC | Utah | 35 min |
| Jul 7, 2:26 PM MDT | Severe Thunderstorm Warning | SLC | Duchesne | 34 min |
| Jul 7, 4:12 PM MDT | Special Weather Statement | SLC | Tooele | 63 min |
Nearby
Severe Thunderstorm Warnings in Utah, 2011Every severe thunderstorm warning in 2011
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.