Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 82, NWS Salt Lake City, UT

August 17, 1997Tooele County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 17, 1997, 3:49 PM MDT for Tooele County, Utah. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 17, 1997, 3:49 PM MDT (21:49 UTC)
Expired
Aug 17, 1997, 4:30 PM MDT
In force
41 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Tooele County, UT

The radar

The Salt Lake City radar (KMTX), 107 km from the middle of the area, began a volume at 21:50 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

Elko, NV (KLKN), launched 12:00Z, 9.8 hours before the alert went out and 102 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, Elko, NV at 12:00Z on 1997-08-17Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Elko, NV at 12:00Z on 1997-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939Sfc1 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
3058 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
103 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.

677 
WUUS1 KSLC 172154 RRA
SVRSLC
UTC045-172230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
349 PM MDT SUN AUG 17 1997

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWESTERN UTAH

   ...WESTERN TOOELE COUNTY
 
AT 345 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
RADAR 103 MILES WEST OF TOOELE OR 16 MILES NORTHWEST OF IBAPAH
MOVING NORTHEAST AT 25 MPH.

THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS OVER THE GREAT SALT
LAKE DESERT AND DUGWAY PROVING GROUNDS.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 2:15 PM MDTSevere Thunderstorm WarningSLCSalt Lake45 min
Aug 17, 3:08 PM MDTSevere Thunderstorm WarningSLCUtah, Wasatch42 min
Aug 17, 3:08 PM MDTSevere Thunderstorm WarningSLCSummit42 min
Aug 17, 3:26 PM MDTFlash Flood WarningSLCUtah, Wasatch44 min
Aug 17, 5:43 PM MDTSevere Thunderstorm WarningSLCTooele, Utah42 min

Nearby

Severe Thunderstorm Warnings in Utah, 1997Every severe thunderstorm warning in 1997

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.