Alert archive / Utah / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 9, NWS Salt Lake City, UT

May 25, 1996San Juan County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at May 25, 1996, 2:15 PM MDT for San Juan County, Utah. It was in force for 60 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 25, 1996, 2:15 PM MDT (20:15 UTC)
Expired
May 25, 1996, 3:15 PM MDT
In force
60 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County San Juan County, UT

The radar

The Grand Junction radar (KGJX), 212 km from the middle of the area, began a volume at 20:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 8.3 hours before the alert went out and 202 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, Grand Junction, CO at 12:00Z on 1996-05-25Temperature 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, Grand Junction, CO at 12:00Z on 1996-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 square meters per square second.1939587897117Sfc1 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
771 m above ground
0-6 km bulk shear
98 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
680 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 252010
SVRSLC
UTC037-252115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
215 PM MDT SAT MAY 25 1996

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 315 PM MDT FOR PEOPLE IN THE
FOLLOWING LOCATION...

IN SOUTHEAST UTAH

   ...SOUTH CENTRAL SAN JUAN COUNTY INCLUDING VALLEY OF THE GODS AND
THE COMB WASH AREA...

GRAND JUNCTION COLORADOS DOPPLER RADAR INDICATES THAT A STRONG
THUNDERSTORM IS MOVING NORTH TOWARDS THE VALLEY OF THE GODS AND THE
COMB WASH AREA OF SOUTHEAST UTAH.  THIS STORM WILL BE AFFECTING THE
AREA OF UTAH BOUNDED BY HIGHWAYS 163...191 AND STATE ROAD 261 AND 95. 
THIS IS THE SAME STORM THAT MOVED ACROSS MONUMENT VALLEY AND PRODUCED
SIGNIFICANT HAIL.

PERSONS IN THE AREA SHOULD BE PREPARED FOR WINDS OF 50 MPH OR
GREATER...LARGE HAIL...HEAVY RAIN AND FREQUENT LIGHTNING.  BE
PREPARED TO TAKE SHELTER IF THREATENING WEATHER APPROACHES.

&

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 25, 12:05 PM MDT, 2 hours 10 minutes before
UTZ013-252100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1152 AM MDT SAT MAY 25 1996

...THUNDERSTORMS HEADED FOR LAKE POWELL...

THUNDERSTORMS THAT FORMED OVER NORTHERN ARIZONA ARE HEADED FOR THE
LAKE POWELL AREA.  THESE THUNDERSTORMS PRODUCED SMALL HAIL...GUSTY
WINDS AND LIGHTNING ACROSS NORTHERN ARIZONA AND WILL DO THE SAME IN
THE LAKE POWELL AREA OVER THE NEXT TWO HOURS.

GUSTY ERRATIC WINDS ACROSS BODIES OF WATER CAN MAKE BOATING
TREACHEROUS.  RECREATIONAL BOATERS SHOULD SEEK SAFE HARBORS.  ALL
CAMPERS IN THE GLEN CANYON RECREATION AREA SHOULD BE PREPARED FOR
INCLEMENT AND POSSIBLY DANGEROUS WEATHER.

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 1:10 PM MDTSevere Thunderstorm WarningSLCSan Juan50 min

Nearby

Severe Thunderstorm Warnings in Utah, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.