Alert archive / Utah / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 26, NWS Salt Lake City, UT

June 16, 1998Kane County, Washington County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 16, 1998, 6:55 PM MDT for Kane County, Washington County, Utah. It was in force for 35 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, 6:55 PM MDT (00:55 UTC)
Expired
Jun 16, 1998, 7:30 PM MDT
In force
35 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Kane County, UT, Washington County, UT

The nearest sounding before it

Mercury/Desert R, NV (KDRA), launched 00:00Z, 0.9 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 00:00Z on 1998-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 203 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 1998-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.1939587897Sfc1 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
203 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
2876 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

574 
WUUS1 KSLC 170056 RRA
SVRSLC
UTC025-053-170130-

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

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

   * SEVERE THUNDERSTORM WARNING FOR...
     WASHINGTON AND WESTERN KANE COUNTIES IN UTAH
     INCLUDING ST GEORGE AND ZION NATIONAL PARK IN WASHINTON COUNTY
     AND MOUNT CARMEL...GLENDALE...AND KANAB IN KANE COUNTY

   * UNTIL 730 PM MDT

   * AT 650 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR            
     INDICATED SEVERE THUNDERSTORMS IN CENTRAL WASHINGTON COUNTY     
      MOVING EAST SOUTHEAST AT 30 MILES PER HOUR.



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

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 4:55 PM MDTFlash Flood WarningSLCDuchesne4 hr

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.