Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 96, NWS Salt Lake City, UT

September 5, 1997Garfield County, Piute County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Sep 5, 1997, 3:44 PM MDT for Garfield County, Piute County, Utah. It was in force for 46 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
Sep 5, 1997, 3:44 PM MDT (21:44 UTC)
Expired
Sep 5, 1997, 4:30 PM MDT
In force
46 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

Counties Garfield County, UT, Piute County, UT

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 9.7 hours before the alert went out and 299 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 1997-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 147 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 1997-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.1939587897Sfc1 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
147 J/kg
Mixed-layer CIN
-167 J/kg
Mixed-layer LCL
1658 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
68 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 
TTAA00 KSLC 052145 RRA
SVRSLC
UTC017-031-052230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
344 PM MDT FRI SEP 5 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 LOCATIONS...

IN SOUTH CENTRAL UTAH

   ...NORTHWESTERN GARFIELD COUNTY
   ...SOUTHEASTERN PIUTE COUNTY
 
AT 340 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
RADAR 11 MILES SOUTHWEST OF ANTIMONY MOVING EAST AT 15 MPH.

THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.  THIS STORM WILL
CROSS STATE HIGHWAY 22 BY ABOUT 410 PM.
 
PERSONS PLANNING OUTDOOR ACTIVITIES SHOULD BE ALERtT FOR STRONG
WINDS...HEAVY SHOWERS...AND HAIL.


DT...2144Z

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 8:15 PM MDTSevere Thunderstorm WarningSLCTooele45 min
Sep 4, 9:07 PM MDTSevere Thunderstorm WarningSLCKane48 min
Sep 5, 5:43 PM MDTFlash Flood WarningSLCGarfield2 hr

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.