Alert archive / Utah / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 5, NWS Salt Lake City, UT

May 12, 1995Weber County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at May 12, 1995, 8:25 PM MDT for Weber County, Utah. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
May 12, 1995, 8:25 PM MDT (02:25 UTC)
Expired
May 12, 1995, 9:00 PM MDT
In force
35 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Weber County, UT

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 00:00Z, 2.4 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 1995-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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, Salt Lake City I, UT at 00:00Z on 1995-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 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
7 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
945 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
-8 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 130226
SVRSLC
UTC057-130300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
825 PM MDT FRI MAY 12 1995

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A 
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  900 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTH CENTRAL UTAH

   ...WESTERN WEBER COUNTY

AT 825 PM...DOPPLER WEATHER RADAR IS SHOWING A STRONG THUNDERSTORM
MOVING SOUTHEASTWARD INTO WESTERN WEBER COUNTY.  THIS STORM IS
CAPABLE OF PRODUCING LARGE HAIL IN EXCESS OF 3/4 INCH IN DIAMETER. 
THE RADAR IS SHOWING THAT THIS THUNDERSTORM WILL PASS TO THE WEST OF
THE I-15 CORRIDOR AND SHOULD NOT AFFECT THE OGDEN AREA. 

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.  STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
8

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 12, 8:06 PM MDT, 19 minutes before
UTC027-023-130300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
805 PM MDT FRI MAY 12 1995

...THUNDERSTORM WITH HAIL AT DELTA...

WEATHER SPOTTERS IN DELTA WERE REPORTING A THUNDERSTORM AT 750 PM
PRODUCING MAINLY PEA SIZED HAIL WITH A FEW STONES UP TO AN INCH IN
DIAMETER.  THE DOPPLER WEATHER RADAR SHOWS THIS STORM WEAKENING AS OF
755 PM AND MOVING OFF TO THE EAST.

RESIDENTS OF NORTHEASTERN MILLARD COUNTY CAN EXPECT SOME SMALL HAIL
FROM THIS STORM FOR THE NEXT 15-20 MINUTES BEFORE IT DISSIPATES.

ADDITIONAL WEAKER THUNDERSTORMS WERE NOTED ON RADAR OVER NORTHERN
MILLARD AND SOUTHERN JUAB COUNTIES THAT WERE ALSO MOVING EAST.  THESE
STORMS COULD BRIEFLY PRODUCE SMALL HAIL DURING THE NEXT HOUR OR SO.

DANGEROUS LIGHTNING IS ALSO ASSOCIATED WITH THESE THUNDERSTORMS.
TAKE PROPER PROTECTION IF THE WEATHER BECOMES THREATENING IN YOUR
AREA.

PJW...0205Z

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.