Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 61, NWS Salt Lake City, UT

August 10, 1997Box Elder County, Tooele County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 10, 1997, 5:26 PM MDT for Box Elder County, Tooele County, Utah. It was in force for 39 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 10, 1997, 5:26 PM MDT (23:26 UTC)
Expired
Aug 10, 1997, 6:05 PM MDT
In force
39 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

Counties Box Elder County, UT, Tooele County, UT

The radar

The Salt Lake City radar (KMTX), 63 km from the middle of the area, began a volume at 23:29 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, 11.4 hours before the alert went out and 93 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 1997-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 124 joules per kilogram.LCLLFCEL10008507005003002001001 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 1997-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 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
124 J/kg
Mixed-layer CIN
-161 J/kg
Mixed-layer LCL
912 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

122 
WUUS1 KSLC 102332 RRA
SVRSLC
UTC003-045-110005-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
526 PM MDT SUN AUG 10 1997

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 605 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN NORTHWESTERN UTAH

   ...WESTERN BOX ELDER COUNTY
   ...WESTERN TOOELE COUNTY
 
AT 520 PM MDT A SEVERE THUNDERSTORM WAS LOCATED ABOUT 20
MILES NORTH OF WENDOVER...MOVING EAST AT 25 MPH.  STRONG GUSTY
WINDS TO 60 MPH ALONG WITH LARGE HAIL CAN BE EXPECTED FROM THIS
STORM.  ALSO...AREAS OF BLOWING DUST AND SAND...POSSIBLY REDUCING
VISIBILITY TO NEAR ZERO...MAY OCCUR ALONG I-80 BETWEEN WENDOVER AND
AND THE GREAT SALT LAKE.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 6:10 PM MDTFlash Flood WarningSLCSevier110 min
Aug 9, 6:10 PM MDTFlash Flood WarningSLCSevier90 min
Aug 10, 5:38 AM MDTSevere Thunderstorm WarningSLCIron, Washington42 min
Aug 10, 7:28 AM MDTSevere Thunderstorm WarningSLCKane32 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.