Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 10, NWS Salt Lake City, UT

May 31, 1997Box Elder County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at May 31, 1997, 3:32 PM MDT for Box Elder 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
May 31, 1997, 3:32 PM MDT (21:32 UTC)
Expired
May 31, 1997, 4:00 PM MDT
In force
28 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, 9.5 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 1997-05-31Temperature 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 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 1997-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.19395878Sfc1 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
2344 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
106 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 312130 RRA
SVRSLC
UTC003-312200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
332 PM MDT SAT MAY 31 1997

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A 
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWEST UTAH

   ...EXTREME NORTHWESTERN BOX ELDER COUNTY

DOPPLER RADAR INDICATES A SEVERE THUNDERSTORM WITH LARGE HAIL NEAR
LYNN.  MOVEMENT WAS TO THE NORTHEAST AT 45 MPH.  YOST IS IN THE PATH
OF THIS STORM AND WILL EXPERIENCE THIS STORM BY AROUND 350 PM. 

WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG
BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES OR
ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS
PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 4:00 PM MDTSevere Thunderstorm WarningSLCBox Elder45 min
May 31, 4:55 PM MDTSevere Thunderstorm WarningSLCBox Elder60 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.