Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 18, NWS Salt Lake City, UT

June 7, 1997Cache County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 7, 1997, 2:17 PM MDT for Cache County, Utah. It was in force for 28 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
Jun 7, 1997, 2:17 PM MDT (20:17 UTC)
Expired
Jun 7, 1997, 2:45 PM MDT
In force
28 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Cache County, UT

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 8.3 hours before the alert went out and 106 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 1997-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 1997-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 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
30 J/kg
Mixed-layer CIN
-210 J/kg
Mixed-layer LCL
1500 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
-27 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.

849 
WUUS1 KSLC 072019 RRA
SVRSLC
UTC005-072045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
217 PM MDT SAT JUN 7 1997

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 245 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHERN UTAH

   ...EASTERN CACHE COUNTY

DOPPLER RADAR INDICATES A SEVERE THUNDERSTORM IN THE MOUNTAINS EAST OF
LOGAN.  MOVEMENT IS TO THE NORTH NORTHEAST AT 15 MPH.  LARGE HAIL AND
STRONG WINDS WILL ACCOMPANY THIS STORM.

THIS STORM IS EXPECTED TO REMAIN IN THE MOUNTAINS.

THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 60 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.

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.