Alert archive / Utah / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 7, NWS Salt Lake City, UT

May 18, 1995Tooele County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at May 18, 1995, 7:14 PM MDT for Tooele County, Utah. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
May 18, 1995, 7:14 PM MDT (01:14 UTC)
Expired
May 18, 1995, 8:00 PM MDT
In force
46 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Tooele County, UT

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 00:00Z, 1.2 hours before the alert went out and 110 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 1995-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 26 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 00:00Z on 1995-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
26 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1966 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
51 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 190117
SVRSLC
UTC045-190200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
714 PM MDT THU MAY 18 1995

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A 
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  800 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWEST UTAH

   ...NORTHEASTERN TOOELE COUNTY

AT 710 PM DOPPLER WEATHER RADAR INDICATED A STRONG THUNDERSTORM 25
MILES NORTHWEST OF GRANTSVILLE.  THIS THUNDERSTORM WILL MOVE OVER
INTERSTATE 80 IN THE AREA FROM DELLE TO LOW.  

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  IF CAUGHT
OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING...BUT
STAY AWAY FROM WINDOWS.

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, May 18, 3:52 PM MDT, 3 hours 22 minutes before
UTZALL-190500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
350 PM MDT THU MAY 18 1995

...STRONG THUNDERSTORMS ARE CONTINUING TO DEVELOP OVER UTAH
ESPECIALLY NORTHERN UTAH LATE THIS AFTERNOON...

SCATTERED THUNDERSTORMS WERE CONTINUING TO DEVELOP OVER UTAH LATE
THIS AFTERNOON ESPECIALLY OVER NORTHERN UTAH.  DOPPLER RADAR IN SALT
LAKE CITY AND SATELLITE PICTURES INDICATED STRONG THUNDERSTORMS OVER
THE NORTHERN PORTION OF THE STATE.  THE MOVEMENT OF THESE
THUNDERSTORMS WAS GENERALLY TO THE EASE-SOUTHEAST AT ABOUT 15 MPH.

WEATHER SPOTTERS REPORTED SMALL HAIL...BRIEF HEAVY RAINFALL...AND
GUSTY WINDS TO NEAR 40 MPH WITH SOME OF THESE THUNDERSTORMS.

A FEW TO SCATTERED THUNDERSTORMS WERE ALSO OCCURRING OVER SOUTHERN
UTAH BUT THERE HAVE BEEN NO REPORTS OF SIGNIFICANT WINDS OR RAINFALL.

SCATTERED THUNDERSTORMS ARE EXPECTED TO CONTINUE OVER THE STATE
THROUGH THIS EVENING...ESPECIALLY OVER NORTHERN UTAH.  SOME OF THE
THUNDERSTORMS OVER NORTHERN UTAH MAY BE ACCOMPANIED BY BRIEF HEAVY
RAIN...SMALL HAIL...AND GUSTY WINDS.

THOSE PLANNING OUTDOOR ACTIVITIES SHOULD LISTEN TO NOAA WEATHER RADAR
OR LOCAL MEDIA FOR FURTHER UPDATES ON THE THUNDERSTORM
DEVELOPMdENT...AND BE PREPARED TO SEEK IMMEDIATE SHELTER IF
THREATENING WEATHER APPROACHES.

CARLE...2150Z
Special weather statement, May 18, 6:29 PM MDT, 45 minutes before
UTZALL-190500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
630 PM MDT THU MAY 18 1995

...STRONG THUNDERSTORMS OVER CENTRAL UTAH...

THE BAND OF THUNDERSTORMS THAT MOVED ACROSS NORTHERN UTAH EARLIER
TODAY IS NOW LOCATED ACROSS THE CENTRAL PART OF THE STATE.  AT 615 PM
DOPPLER RADAR AND SATELLITE IMAGERY INDICATED THE AREA OF STRONG
STORMS WAS OVER THE WESTERN TWO-THIRDS OF UTAH IN AN AREA BOUNDED BY
PRICE AND DELTA ON THE NORTH TO INTERSTATE 70 AND MILFORD ON THE
SOUTH.

THE STRONGEST THUNDERSTORM WAS 25 MILES NORTHWEST OF DELTA AND WILL
PROBABLY PASS OVER THE LITTLE SAHARA SAND DUNES AREA BETWEEN 7 AND
8 PM.

THE THUNDERSTORMS ARE MOVING SLOWLY TOWARD THE EAST WITH A LITTLE
SOUTHWARD DRIFT.
BRIEF HEAVY RAINFALL...SMALL HAIL...AND STRONG GUSTY WINDS ARE
POSSIBLE WITH SOME OF THESE STORMS.

OTHER SHOWERS AND THUNDERSTORMS ARE CONTINUING ACROSS THE REMAINDER
OF NORTHERN AND WESTERN UTAH BUT ARE GENERALLY MUCH WEAKER WITH BRIEF
RAIN SHOWERS AND MODERATE WIND GUSTS.

THOSE PLANNING OUTDOOR ACTIVITIES IN CENTRAL UTAH SHOULD PAY CLOSE
ATTENTION TO THE WEATHER AND BE PREPARED TO SEEK IMMEDIATE SHELTER IF
THREATENING WEATHER APPROACHES.

DRS...0030Z

Nearby

Severe Thunderstorm Warnings in Utah, 1995Every severe thunderstorm warning in 1995

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.