Alert archive / Utah / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 38, NWS Salt Lake City, UT

July 5, 1998Garfield County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 5, 1998, 11:02 AM MDT for Garfield County, Utah. It was in force for 28 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
Jul 5, 1998, 11:02 AM MDT (17:02 UTC)
Expired
Jul 5, 1998, 11:30 AM MDT
In force
28 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Garfield County, UT

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 5.0 hours before the alert went out and 293 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 1998-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Grand Junction, CO at 12:00Z on 1998-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2463 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
126 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.

643 
WUUS1 KSLC 051704 RRA
SVRSLC
UTC017-051730-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1102 AM MDT SUN JUL 5 1998

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

   * SEVERE THUNDERSTORM WARNING FOR...
     NORTH CENTRAL GARFIELD COUNTY IN UTAH

   * UNTIL 1130 AM MDT

   * AT 1055 AM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
     A SEVERE THUNDERSTORM 10 MILES SOUTH OF ANTIMONY...OR ABOUT 23
     MILES NORTH OF BRYCE CYN NP...MOVING NORTHEAST AT 35 MILES PER
     HOUR.

   * OTHER LOCATIONS IN THE WARNING INCLUDE ANTIMONY

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN SALT LAKE CITY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 7:38 AM MDTSevere Thunderstorm WarningSLCWashington52 min
Jul 5, 8:27 AM MDTSevere Thunderstorm WarningSLCIron, Kane, Washington63 min
Jul 5, 11:14 AM MDTSevere Thunderstorm WarningSLCGarfield21 min
Jul 5, 12:02 PM MDTSevere Thunderstorm WarningSLCSevier28 min
Jul 5, 12:27 PM MDTSevere Thunderstorm WarningSLCJuab43 min
Jul 5, 2:19 PM MDTSevere Thunderstorm WarningSLCSummit, Wasatch41 min
Jul 5, 3:08 PM MDTFlash Flood WarningSLCKane62 min
Jul 5, 3:08 PM MDTSevere Thunderstorm WarningSLCKane62 min

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.