Alert archive / Wyoming / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 10, NWS Riverton, WY

June 21, 1996Lincoln County, Wyoming

NWS Riverton, WY issued this severe thunderstorm warning at Jun 21, 1996, 6:14 PM MDT for Lincoln County, Wyoming. It was in force for 61 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 21, 1996, 6:14 PM MDT (00:14 UTC)
Expired
Jun 21, 1996, 7:15 PM MDT
In force
61 min
Issued by
NWS Riverton, WY
Area
Whole counties

County Lincoln County, WY

What was reported inside it

TimeReportWhereRemark
Jun 21, 6:40 PM MDTHail 1Kemmerer, WY

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 00:00Z, 0.2 hours before the alert went out and 195 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 1996-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 929 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 1996-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939587897117Sfc1 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
929 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
2753 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
0.0
Supercell composite
10.6

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 21, 12:17 PM MDT, 5 hours 57 minutes before
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Special weather statement, Jun 21, 1:33 PM MDT, 4 hours 41 minutes before
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Special weather statement, Jun 21, 1:57 PM MDT, 4 hours 17 minutes before
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Special weather statement, Jun 21, 3:19 PM MDT, 2 hours 55 minutes before
WYZ011>013-016>023-212120

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
320 MDT THU JUN 20 1996

...SEVERE THUNDERSTORM WARNING FOR CENTRAL AND NORTHERN FREMONT COUNTY
   UNTIL 355 PM...
...STRONG THUNDERSTORMS CONTINUE IN SOUTHWEST WYOMING...

A SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR CENTRAL AND NORTHERN
FREMONT COUNTY.  DOPPLER RADAR INDICATES A SEVERE THUNDERSTORM JUST
NORTHWEST OF RIVERTON.  THIS STORM HAS DROPPED HAIL OVER SOUTH
PASS...HUDSON AND WEST OF RIVERTON.

AT 300 PM WEATHER RADAR CONTINUED TO INDICATE STRONG THUNDERSTORMS
OVER CENTRAL AND NORTHERN FREMONT COUNTY.  ADDITIONAL STRONG
THUNDERSTORMS ARE CURRENTLY INDICATED IN NORTHEAST UTAH...LINCOLN AND
TWO SEPERATE CLUSTERS OVER SWEETWATER COUNTIES.  THESE STORMS ARE
MOVING TOWARD THE NORTHEAST AND WILL LIKELY TRACK ALONG A SIMILAR PATH
THROUGH SOUTHERN LINCOLN AND WESTERN SWEETWATER COUNTIES AND SHOULD
ENTER FREMONT COUNTY WITHIN THE NEXT HOUR.  WE CAN EXPECT THIS
THUNDERSTORM ACTIVITY TO CONTINUE FOR THE NEXT TWO HOURS ALONG WITH
DANGEROUS WIND GUSTS TO 40 MPH...FREQUENT CLOUD TO GROUND LIGHTNING
AND POSSIBLE HAIL.
>
WJIN-WYNW-WYSW
DAL

The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 21, 7:08 PM MDTSevere Thunderstorm WarningRIWLincoln42 min
Jun 21, 7:30 PM MDTSevere Thunderstorm WarningRIWLincoln, Teton60 min
Jun 21, 8:11 PM MDTSevere Thunderstorm WarningRIWPark, Teton49 min
Jun 21, 8:26 PM MDTSevere Thunderstorm WarningRIWTeton64 min
Jun 21, 9:20 PM MDTSevere Thunderstorm WarningRIWTeton30 min
Jun 22, 3:16 AM MDTSevere Thunderstorm WarningRIWPark44 min
Jun 22, 12:03 PM MDTSevere Thunderstorm WarningRIWSweetwater62 min
Jun 22, 12:47 PM MDTSevere Thunderstorm WarningRIWPark58 min
Jun 22, 1:49 PM MDTSevere Thunderstorm WarningRIWHot Springs56 min
Jun 22, 2:58 PM MDTSevere Thunderstorm WarningRIWBig Horn37 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 1996Every severe thunderstorm warning in 1996

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.