Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 31, NWS Salt Lake City, UT

June 10, 1997Weber County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 10, 1997, 6:41 PM MDT for Weber County, Utah. It was in force for 29 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 10, 1997, 6:41 PM MDT (00:41 UTC)
Expired
Jun 10, 1997, 7:10 PM MDT
In force
29 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Weber County, UT

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 10, 3:15 PM MDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 00:00Z, 0.7 hours before the alert went out and 54 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 00:00Z on 1997-06-11Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 00:00Z on 1997-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -69 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
1072 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-69 m²/s²
0-3 km storm-relative helicity
36 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 110042 RRA
SVRSLC
UTC057-110110-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
641 PM MDT TUE JUN 10 1997

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 710 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWESTERN UTAH

   ...CENTRAL WEBER COUNTY
 
THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WEBER COUNTY IS BEING
CONTINUED FOR THE CENTRAL PORTION OF THE COUNTY THROUGH 710 PM.

THE SEVERE THUNDERSTORM IS OVER NORTH OGDEN AT 635 PM AND HAS
PRODUCED 3/4 TO 1 INCH SIZED HAIL AT PLAIN CITY...NORTH OGDEN AND
HARRISVILLE.

THE STORM CONTINUES TO MOVE EAST AT ABOUT 20 MPH AND WILL REACH THE
LIBERTY AREA BY 700 PM.
 
THIS STORM WILL PRODUCE STRONG GUSTY WIND...LARGE HAIL...AND
FREQUENT LIGHTNING.  TAKE COVER WHEN THREATENING WEATHER APPROACHES.

&

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 6:16 PM MDTSevere Thunderstorm WarningSLCWeber29 min
Jun 11, 3:53 PM MDTSevere Thunderstorm WarningSLCBox Elder32 min
Jun 11, 4:32 PM MDTSevere Thunderstorm WarningSLCBox Elder33 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.