Alert archive / Utah / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 17, NWS Salt Lake City, UT

June 4, 1998Utah County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 4, 1998, 10:31 PM MDT for Utah County, Utah. It was in force for 29 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
Jun 4, 1998, 10:31 PM MDT (04:31 UTC)
Expired
Jun 4, 1998, 11:00 PM MDT
In force
29 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Utah County, UT

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 00:00Z, 4.5 hours before the alert went out and 76 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 1998-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 36 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 1998-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -43 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
36 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1080 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-43 m²/s²
0-3 km storm-relative helicity
-6 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.

598 
WUUS1 KSLC 040434
SVRSLC
UTC049-050500-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1031 PM MDT THU JUN 4 1998

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN UTAH COUNTY

* UNTIL 1100 PM MDT

* AT 1027 PM MDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR OVER OREM MOVING NORTH AT 20 MPH.

* THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
SPRINGDELL             AT AROUND 1035 PM MDT
PLEASANT GROVE         AT AROUND 1040 PM MDT
AMERICAN FORK          AT AROUND 1040 PM MDT

THIS STORM PRODUCED NICKEL SIZE HAIL IN OREM AROUND 1025 PM MDT.

THIS THUNDERSTORM WILL PRODUCE STRONG GUSTY WIND...LARGE HAIL...
AND FREQUENT LIGHTNING.  TAKE COVER WHEN THREATENING WEATHER
APPROACHES.

&

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.