Alert archive / Utah / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 25, NWS Salt Lake City, UT

June 16, 1998Iron County, Washington County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 16, 1998, 5:58 PM MDT for Iron County, Washington County, Utah. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jun 16, 1998, 5:58 PM MDT (23:58 UTC)
Expired
Jun 16, 1998, 6:45 PM MDT
In force
47 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Iron County, UT, Washington County, UT

The nearest sounding before it

Mercury/Desert R, NV (KDRA), launched 12:00Z, 12.0 hours before the alert went out and 225 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, Mercury/Desert R, NV at 12:00Z on 1998-06-16Temperature 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 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Mercury/Desert R, NV at 12:00Z on 1998-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 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
2566 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
-16 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.

233 
WUUS1 KSLC 170000 RRA
SVRSLC
UTC021-053-170045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
558 PM MDT TUE JUN 16 1998

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

   * SEVERE THUNDERSTORM WARNING FOR...
     SOUTH CENTRAL IRON COUNTY IN UTAH
     WASHINGTON COUNTY IN UTAH
     INCLUDING ST GEORGE AND CEDAR CITY

   * UNTIL 645 PM MDT

   * AT 556 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
     SEVERE THUNDERSTORMS 11 MILES NORTH OF GUNLOCK...OR ABOUT 24
     MILES NORTH OF ST GEORGE...MOVING SOUTHEAST AT 30 MILES PER
     HOUR.

   * OTHER LOCATIONS IN THE WARNING INCLUDE SUMMIT...ENOCH...
     WASHINGTON...TOQUERVILLE...SANTA CLARA...NEW HARMONY...
     SPRINGDALE...KANARRAVILLE...GUNLOCK...HURRICANE AND ZION NP

   * SEVERE THUNDERSTORM WILL BE...
     9 MILES EAST OF GUNLOCK AT 615 PM MDT
     6 MILES NORTH OF WASHINGTON AT 625 PM MDT
     4 MILES SOUTHEAST OF WASHINGTON AT 640 PM MDT



LAT...LON 3743 11409 3703 11409 3702 11292 3782 11298

Nearby

Severe Thunderstorm Warnings in Utah, 1998Every severe thunderstorm warning in 1998

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.