Alert archive / Wyoming / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 21, NWS Salt Lake City, UT

July 6, 2008Uinta County, Wyoming; Summit County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 6, 2008, 3:40 PM MDT for Uinta County, Wyoming; Summit County, Utah. It was in force for 35 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 6, 2008, 3:40 PM MDT (21:40 UTC)
Expired
Jul 6, 2008, 4:15 PM MDT
In force
35 min
Issued by
NWS Salt Lake City, UT
Area
Storm-based polygon

Counties Summit County, UT, Uinta County, WY

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 9.7 hours before the alert went out and 114 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.

Skew-T log-pSkew-T log-p diagram, Salt Lake City I, UT at 12:00Z on 2008-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2008-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2987 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS55 KSLC 062141
SVRSLC
UTC043-WYC041-062215-
/O.NEW.KSLC.SV.W.0021.080706T2140Z-080706T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
340 PM MDT SUN JUL 6 2008

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL SUMMIT COUNTY IN UTAH
  SOUTH CENTRAL UINTA COUNTY IN SOUTHWEST WYOMING

* UNTIL 415 PM MDT

* AT 335 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS   
  STORM WAS LOCATED 8 MILES SOUTHWEST OF HEWINTA GUARD               
  STATION....OR 31 MILES SOUTHEAST OF EVANSTON...AND MOVING          
  NORTHEAST AT 11 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HEWINTA GUARD STATION BY 415 PM MDT...

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 4111 11053 4092 11035 4079 11064 4092 11077
TIME...MOT...LOC 2140Z 236DEG 9KT 4091 11059

$$

CVG
1 follow-up statement
000 
WWUS55 KSLC 062212
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
412 PM MDT SUN JUL 6 2008

UTC043-WYC041-062222-
/O.EXP.KSLC.SV.W.0021.000000T0000Z-080706T2215Z/
UINTA WY-SUMMIT UT-
412 PM MDT SUN JUL 6 2008

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SUMMIT AND SOUTH
CENTRAL UINTA COUNTIES EXPIRES AT 415 PM MDT...

THE STORM HAS WEAKENED AND IS NO LONGER SEVERE. THEREFORE THE WARNING
HAS BEEN ALLOWED TO EXPIRE. THIS STORM IS STILL CAPABLE OF PRODUCING 
PEA SIZED HAIL.

LAT...LON 4111 11053 4092 11035 4079 11064 4092 11077
TIME...MOT...LOC 2212Z 236DEG 9KT 4095 11050

$$

CVG

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 6, 12:03 PM MDTSevere Thunderstorm WarningSLCGarfield27 min
Jul 6, 2:16 PM MDTSevere Thunderstorm WarningSLCIron, Washington15 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 2008Severe Thunderstorm Warnings in Utah, 2008Every severe thunderstorm warning in 2008

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.