Alert archive / Utah / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 5, NWS Salt Lake City, UT

June 1, 20029 counties in Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 1, 2002, 3:22 PM MDT for 9 counties in Utah. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 1, 2002, 3:22 PM MDT (21:22 UTC)
Expired
Jun 1, 2002, 4:00 PM MDT
In force
38 min
Issued by
NWS Salt Lake City, UT
Area
Counties, with a storm outline in the text

Counties Box Elder County, UT, Cache County, UT, Davis County, UT, Duchesne County, UT, Morgan County, UT, Salt Lake County, UT, Summit County, UT, Wasatch County, UT, Weber County, UT

The radar

The Salt Lake City radar (KMTX), 57 km from the middle of the area, began a volume at 21:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 9.4 hours before the alert went out and 43 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 12:00Z on 2002-06-01Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2002-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 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
4442 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
113 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.

965 
WUUS55 KSLC 012122
SVRSLC
UTC003-005-011-013-029-035-043-051-057-012200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
321 PM MDT SAT JUN 1 2002

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BOX ELDER COUNTY IN UTAH
  THIS INCLUDES THE CITIES OF...TREMONTON...SNOWVILLE...BRIGHAM CITY
  SOUTHWESTERN CACHE COUNTY IN UTAH
  THIS INCLUDES THE CITY OF LOGAN
  NORTHEASTERN DAVIS COUNTY IN UTAH
  THIS INCLUDES THE CITIES OF...LAYTON...FARMINGTON
  WESTERN DUCHESNE COUNTY IN UTAH
  THIS INCLUDES THE CITY OF DUCHESNE
  MORGAN COUNTY IN UTAH
  THIS INCLUDES THE CITY OF MORGAN
  NORTHEASTERN SALT LAKE COUNTY IN UTAH
  WESTERN SUMMIT COUNTY IN UTAH
  THIS INCLUDES THE CITIES OF...PARK CITY...COALVILLE
  NORTHERN WASATCH COUNTY IN UTAH
  WEBER COUNTY IN UTAH
  THIS INCLUDES THE CITY OF OGDEN

* UNTIL 400 PM MDT

* AT 314 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 11 MILES SOUTHWEST OF HOWELL TO
  28 MILES SOUTH OF FRUITLAND...OR FROM 22 MILES SOUTH OF SNOWVILLE
  TO 15 MILES NORTH OF PRICE...MOVING NORTHEAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE...
  OVER FRANCIS AT 330 PM MDT
  OVER WILLARD...WANSHIP...NORTH OGDEN...MORGAN AT 335 PM MDT
  OVER COALVILLE...PERRY...OAKLEY...CORINNE AT 340 PM MDT
  3 MILES SOUTHWEST OF TREMONTON AT 345 PM MDT

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 4197 11294 3981 11071 4004 11021 4198 11210

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 1:23 PM MDTSevere Thunderstorm WarningSLCJuab, Millard, Tooele37 min
Jun 1, 1:49 PM MDTSevere Thunderstorm WarningSLCJuab, Tooele, Utah41 min
Jun 1, 2:28 PM MDTSevere Thunderstorm WarningSLCBox Elder, Davis, Salt Lake, Tooele, Utah, Weber47 min
Jun 1, 3:00 PM MDTSevere Thunderstorm WarningSLCBox Elder, Davis, Salt Lake, Tooele, Utah, Wasatch and 1 more30 min
Jun 1, 4:00 PM MDTSevere Thunderstorm WarningSLCBox Elder, Cache, Duchesne, Morgan, Rich, Summit and 2 more45 min
Jun 1, 4:46 PM MDTSevere Thunderstorm WarningSLCRich, Summit29 min

Nearby

Severe Thunderstorm Warnings in Utah, 2002Every severe thunderstorm warning in 2002

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; radar from the NEXRAD Level II archive.