Alert archive / Utah / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 21, NWS Grand Junction, CO
NWS Grand Junction, CO issued this severe thunderstorm warning at Jul 19, 2011, 3:00 PM MDT for Uintah 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
- Jul 19, 2011, 3:00 PM MDT (21:00 UTC)
- Expired
- Jul 19, 2011, 3:45 PM MDT
- In force
- 45 min
- Issued by
- NWS Grand Junction, CO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Uintah County, UT
The radar
The Grand Junction radar (KGJX), 164 km from the middle of the area, began a volume at 21:01 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
Grand Junction, CO (KGJT), launched 12:00Z, 9.0 hours before the alert went out and 141 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
- 16 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 1696 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
041 WUUS55 KGJT 192100 SVRGJT UTC047-192145- /O.NEW.KGJT.SV.W.0021.110719T2100Z-110719T2145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GRAND JUNCTION CO 300 PM MDT TUE JUL 19 2011 THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL UINTAH COUNTY IN NORTHEAST UTAH... * UNTIL 345 PM MDT * AT 256 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 13 MILES SOUTHEAST OF MYTON...OR 16 MILES SOUTHWEST OF RANDLETT...AND MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF CENTRAL UINTAH COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 3995 10941 3991 10998 4013 10999 4023 10948 TIME...MOT...LOC 2059Z 259DEG 19KT 4003 10992 WIND...HAIL 60MPH 1.00IN $$
1 follow-up statement
382 WWUS55 KGJT 192122 SVSGJT SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 322 PM MDT TUE JUL 19 2011 UTC047-192145- /O.CON.KGJT.SV.W.0021.000000T0000Z-110719T2145Z/ UINTAH UT- 322 PM MDT TUE JUL 19 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL UINTAH COUNTY UNTIL 345 PM MDT... AT 316 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 13 MILES SOUTH OF RANDLETT...MOVING EAST AT 25 MPH. LOCATIONS IMPACTED INCLUDE... NEAR UTAH STATE HIGHWAY 88 NEAR AROUND 335 PM MDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 3993 10997 4012 10998 4023 10948 3995 10941 TIME...MOT...LOC 2121Z 261DEG 21KT 4005 10977 WIND...HAIL 60MPH 1.00IN $$
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 7:42 PM MDT | Special Weather Statement | GJT | Grand | 48 min |
| Jul 18, 9:12 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 48 min |
| Jul 18, 11:54 PM MDT | Areal Flood Advisory | GJT | Uintah | 3 hr |
| Jul 19, 12:42 PM MDT | Areal Flood Advisory | GJT | San Juan | 3 hr |
| Jul 19, 1:11 PM MDT | Flash Flood Warning | GJT | San Juan | 3 hr |
| Jul 19, 2:16 PM MDT | Areal Flood Advisory | GJT | Uintah | 3 hr |
| Jul 19, 3:45 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 45 min |
| Jul 19, 4:51 PM MDT | Severe Thunderstorm Warning | GJT | Uintah | 35 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.