Alert archive / Utah / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 96, NWS Salt Lake City, UT

September 9, 1998Box Elder County, Davis County, Tooele County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Sep 9, 1998, 6:45 PM MDT for Box Elder County, Davis County, Tooele 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Sep 9, 1998, 6:45 PM MDT (00:45 UTC)
Expired
Sep 9, 1998, 7:45 PM MDT
In force
60 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Box Elder County, UT, Davis County, UT, Tooele County, UT

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 00:00Z, 0.8 hours before the alert went out and 83 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 1998-09-10Temperature 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, Salt Lake City I, UT at 00:00Z on 1998-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
2521 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
115 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.

330 
WUUS1 KSLC 100050 RRA
SVRSLC
UTC003-011-045-100145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING FOR HIGH WINDS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
645 PM MDT WED SEP 9 1998

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

   * SEVERE THUNDERSTORM WARNING FOR...
     SOUTH CENTRAL BOX ELDER COUNTY IN UTAH
     EASTERN TOOELE COUNTY IN UTAH
     WESTERN DAVIS COUNTY IN UTAH

   * UNTIL 745 PM MDT

   * AT 643 PM MDT THE PUBLIC REPORTED A SEVERE THUNDERSTORM 17 MILES
     SOUTHEAST OF CLIVE...OR ABOUT 35 MILES WEST OF                  
     TOOELE...MOVING NORTH AT 40 MILES PER HOUR.



WINDS IN EXCESS OF 57 MPH ARE EXPECTED WITH THIS THUNDERSTORM.

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.

LAT...LON 4031 11322 4018 11263 4104 11211 4122 11310

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 1:05 PM MDTSevere Thunderstorm WarningSLCGarfield, Kane55 min
Sep 10, 1:05 PM MDTSevere Thunderstorm WarningSLCWashington55 min
Sep 10, 2:00 PM MDTSevere Thunderstorm WarningSLCGarfield, Piute60 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.