Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 40, NWS Salt Lake City, UT

June 12, 1997Box Elder County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 12, 1997, 5:52 PM MDT for Box Elder County, Utah. It was in force for 48 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 12, 1997, 5:52 PM MDT (23:52 UTC)
Expired
Jun 12, 1997, 6:40 PM MDT
In force
48 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Box Elder County, UT

The nearest sounding before it

Elko, NV (KLKN), launched 12:00Z, 11.9 hours before the alert went out and 118 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 1997-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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 1997-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 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
3 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
766 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
-14 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.

942 
WUUS1 KSLC 130000 RRA
SVRSLC
UTC003-130040-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
552 PM MDT THU JUN 12 1997

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 640 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWESTERN UTAH

   ...CENTRAL BOX ELDER COUNTY
 
AT 548 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
RADAR 41 MILES SOUTHEAST OF PARK VALLEY OR 5 MILES NORTHWEST OF
LAKESIDE MOVING NORTH AT 20 MPH.  THIS STORM WILL LIKELY PRODCUE
LARGE HAIL.  

THE PATH OF THIS STORM SHOULD KEEP IT OVER REMOTE SECTIONS OF BOX
ELDER COUNTY.

 SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...DESTRUCTIVE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 9:24 AM MDTSevere Thunderstorm WarningSLCBox Elder46 min
Jun 12, 10:25 AM MDTSevere Thunderstorm WarningSLCBox Elder60 min
Jun 12, 10:57 AM MDTSevere Thunderstorm WarningSLCDavis, Salt Lake28 min
Jun 12, 11:22 AM MDTSevere Thunderstorm WarningSLCTooele48 min
Jun 12, 12:06 PM MDTSevere Thunderstorm WarningSLCSalt Lake49 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.