Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 26, NWS Salt Lake City, UT

June 10, 1997Tooele County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 10, 1997, 3:34 PM MDT for Tooele County, Utah. It was in force for 41 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 10, 1997, 3:34 PM MDT (21:34 UTC)
Expired
Jun 10, 1997, 4:15 PM MDT
In force
41 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Tooele County, UT

What was reported inside it

TimeReportWhereRemark
Jun 10, 4:00 PM MDTHail 0.75Grantsville, UTA severe thunderstorm dropped 3/4" diameter hail in the town of Grantsville. Some tree damage occurred in the area.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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

Elko, NV (KLKN), launched 12:00Z, 9.6 hours before the alert went out and 102 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 1997-06-10Temperature 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 1997-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -42 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
-63 J/kg
Mixed-layer LCL
1605 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-42 m²/s²
0-3 km storm-relative helicity
-40 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.

973 
WUUS1 KSLC 102135 RRA
SVRSLC
UTC045-102215-

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

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 415 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWESTERN UTAH

   ...SOUTHEASTERN TOOELE COUNTY
 
AT 327 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
RADAR 16 MILES SOUTH OF DUGWAY MOVING NORTHEAST AT 5 MPH.

THIS STORM WILL AFFECT THE RURAL AREAS BETWEEN DUGWAY AND VERNON
UNTIL 415 PM MDT.
 
THESE STORMS MAY PRODUCE STRONG GUSTY WIND...LARGE HAIL...AND
FREQUENT LIGHTNING.  TAKE COVER WHEN THREATENING WEATHER APPROACHES.

THE WARNING FOR WESTERN AND CENTRAL TOOELE COUNTY HAS EXPIRED AS
THE THUNDERSTORMS THERE HAVE WEAKENED.   HOWEVER...MOST OF NORTHERN
UTAH REMAINS UNDER A SEVERE THUNDERSTORM WATCH UNTIL 800 PM THIS
EVENING AND ADDITIONAL SEVERE THUNDERSTORMS ARE POSSIBLE.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 10, 12:02 PM MDT, 3 hours 32 minutes before
UTZ001>027-110000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1202 PM MDT TUE JUN 10 1997

     ...MORE THUNDERSTORMS STATEWIDE THIS AFTERNOON AND EVENING...

A VERY MOIST AND UNSTABLE AIRMASS OVER UTAH WILL SPAWN ANOTHER ROUND
OF SHOWERS AND THUNDERSTORMS ACROSS UTAH TODAY.  THESE STORMS WILL
PRODUCE LOCALLY HEAVY RAINFALL...HAIL...GUSTY SURFACE WINDS...AND
FREQUENT CLOUD-TO-GROUND LIGHTNING.

THUNDERSTORMS WERE FORMING RAPIDLY OVER SOUTHERN UTAH EARLY THIS
AFTERNOON.  THESE STORMS WILL GAIN IN NUMBER AND INTENSITY OVER THE
NEXT COUPLE OF HOURS...THEN SPREAD INTO NORTHERN UTAH.  HEAVY
RAINFALLS COULD RESULT IN LOCALIZED FLOODING...ESPECIALLY IN AREAS
THAT RECEIVED HEAVY RAINFALL OVER THE PAST COUPLE OF DAYS.

PERSONS PLANNING OUTDOOR ACTIVITIES ANYWHERE IN UTAH TODAY NEED TO
KEEP A CLOSE EYE ON THE WEATHER.  IF THUNDERSTORMS MOVE INTO YOUR
AREA SEEK SHELTER IN A BUILDING OR VEHICLE IMMEDIATELY.  STAY TUNED
TO LOCAL RADIO...TELEVISION...CABLE TV...OR NOAA WEATHER RADIO FOR
FURTHER INFORMATION ON TODAYS WEATHER.

MCC...1202Z
Special weather statement, Jun 10, 12:03 PM MDT, 3 hours 31 minutes before
UTZ001>027-110000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1202 PM MDT TUE JUN 10 1997

     ...MORE THUNDERSTORMS STATEWIDE THIS AFTERNOON AND EVENING...

A VERY MOIST AND UNSTABLE AIRMASS OVER UTAH WILL SPAWN ANOTHER ROUND
OF SHOWERS AND THUNDERSTORMS ACROSS UTAH TODAY.  THESE STORMS WILL
PRODUCE LOCALLY HEAVY RAINFALL...HAIL...GUSTY SURFACE WINDS...AND
FREQUENT CLOUD-TO-GROUND LIGHTNING.

THUNDERSTORMS WERE FORMING RAPIDLY OVER SOUTHERN UTAH EARLY THIS
AFTERNOON.  THESE STORMS WILL GAIN IN NUMBER AND INTENSITY OVER THE
NEXT COUPLE OF HOURS...THEN SPREAD INTO NORTHERN UTAH.  HEAVY
RAINFALLS COULD RESULT IN LOCALIZED FLOODING...ESPECIALLY IN AREAS
THAT RECEIVED HEAVY RAINFALL OVER THE PAST COUPLE OF DAYS.

PERSONS PLANNING OUTDOOR ACTIVITIES ANYWHERE IN UTAH TODAY NEED TO
KEEP A CLOSE EYE ON THE WEATHER.  IF THUNDERSTORMS MOVE INTO YOUR
AREA SEEK SHELTER IN A BUILDING OR VEHICLE IMMEDIATELY.  STAY TUNED
TO LOCAL RADIO...TELEVISION...CABLE TV...OR NOAA WEATHER RADIO FOR
FURTHER INFORMATION ON TODAY'S WEATHER.

MCC...1202Z

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 12:00 PM MDTSevere Thunderstorm WarningSLCWayne45 min
Jun 10, 12:47 PM MDTSevere Thunderstorm WarningSLCWayne48 min
Jun 10, 1:10 PM MDTSevere Thunderstorm WarningSLCDuchesne45 min
Jun 10, 1:35 PM MDTSevere Thunderstorm WarningSLCWayne45 min
Jun 10, 2:23 PM MDTSevere Thunderstorm WarningSLCDavis, Salt Lake47 min
Jun 10, 2:28 PM MDTSevere Thunderstorm WarningSLCTooele62 min
Jun 10, 3:02 PM MDTSevere Thunderstorm WarningSLCMorgan, Salt Lake, Summit48 min
Jun 10, 4:04 PM MDTSevere Thunderstorm WarningSLCTooele61 min
Jun 10, 5:02 PM MDTSevere Thunderstorm WarningSLCDavis, Salt Lake, Tooele63 min
Jun 10, 5:03 PM MDTSevere Thunderstorm WarningSLCDavis, Salt Lake, Tooele62 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.