Alert archive / Wyoming / Tornado Warnings in 1996

Tornado Warning 11, NWS Cheyenne, WY

June 22, 1996Goshen County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jun 22, 1996, 4:18 PM MDT for Goshen County, Wyoming. It was in force for 27 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 22, 1996, 4:18 PM MDT (22:18 UTC)
Expired
Jun 22, 1996, 4:45 PM MDT
In force
27 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Goshen County, WY

The radar

The Cheyenne radar (KCYS), 111 km from the middle of the area, began a volume at 22:22 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

Rapid City, SD (KUNR), launched 12:00Z, 10.3 hours before the alert went out and 251 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, Rapid City, SD at 12:00Z on 1996-06-22Temperature 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, Rapid City, SD at 12:00Z on 1996-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 square meters per square second.1939587897Sfc1 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
934 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
426 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.

000 
TTAA00 KCYS 222221
TORCYS
WYC015-222245-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
418 PM MDT SAT JUN 22 1996
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  445 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST WYOMING
 
   ...EASTERN GOSHEN COUNTY  INCLUDING TORRINGTON...
 
A TORNADO HAS BEEN REPORTED BY A SHERIFF DEPUTY 5 MILES SOUTH OF
TORRINGTON MOVING NORTH TOWARDS TOWN.
 
 
IF YOU ARE IN A CAR OR MOBILE HOME...ABANDON IT!  GO IN A NEARBY
STURDY BUILDING! AS A LAST RESORT LIE FLAT IN A DITCH AND COVER YOUR
HEAD.
 
WCJIN-WYSE.
BAKER
 
&

What forecasters said that day

The local office's own words before this tornado 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 22, 10:52 AM MDT, 5 hours 26 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-230000-

SEVERE WEATHER OUTLOOK...CORRECTION FOR UPPER LEVEL WIND DIRECTION...
NATIONAL WEATHER SERVICE CHEYENNE WY
1052  AM MDT SAT JUN 22 1996

THE SEVERE WEATHER POTENTIAL IN THE COUNTY WARNING AREA OF THE CHEYENNE
NATIONAL WEATHER SERVICE OFFICE IS HIGH THIS AFTERNOON AND EVENING.

SPOTTER ACTIVATION WILL BE NECESSARY BY MID AFTERNOON

DISCUSSION...A COLD FRONT WILL PROVIDE SOME LIFTING AND HELP PROMOTE
THUNDERSTORM DEVELOPMENT OVER CHEYENNE/S COUNTY WARNING AREA TODAY.
LOW FOG OVER SOUTHEAST WYOMING WITH HIGH SURFACE DEWPOINTS WILL
PROVIDE THE NECESSARY LOW LEVEL MOISTURE FOR THUNDERSTORM ACTIVITY
TODAY. ALOFT FLOW FROM THE SOUTHWEST WILL MOVE THE STORMS THAT FORM
TO THE NORTHEAST. LOW LEVEL SOUTH AND SOUTHEAST WINDS ...SHOULD PROVIDE
THE NECESSARY SHEARING FOR SOME THUNDERSTORMS APPROACHING SEVERE LEVELS
AS THE DAY CONTINUES.

WTP
Special weather statement, Jun 22, 1:53 PM MDT, 2 hours 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
152 PM MDT SAT JUN 22 1996

AT 149 PM MDT...SCATTERED SHOWERS AND THUNDERSTORMS WERE DEVELOPING IN
ALBANY COUNTY INTO NORTHERN PLATTE COUNTY.  THE STRONGEST STORM WAS
LOCATED IN NORTHERN ALBANY COUNTY 35 MILES NORTH OF LARAMIE.  THIS
STORM IS PRODUCING VERY HEAVY RAINFALL AND POSSIBLE SMALL HAIL.
MOVEMENT WAS NORTHEAST AT 30 TO 35 MPH.

THESE STORMS WILL CONTINUE TO INCREASE IN COVERAGE AND INTENSITY ACROSS
THE REMAINDER OF SOUTHEAST WYOMING THIS AFTERNOON INTO THIS EVENING.
PEOPLE IN SOUTHEAST WYOMING SHOULD THEREFORE BE ON THE LOOK OUT FOR
THESE STORMS...AND BE PREPARED TO TAKE SHELTER SHOULD A STORM APPROACH.

WCJIN-WYSE-WYNE

MOORE
Special weather statement, Jun 22, 2:58 PM MDT, 1 hour 20 minutes before
...A TORNADO WATCH IS IN EFFECT UNTIL 900 PM MDT FOR PARTS OF SOUTHEAST
WYOMING...

THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PARTS OF
SOUTHEAST WYOMING UNTIL 900 PM MDT.  COUNTIES IN THIS WATCH INCLUDE:

SOUTHEASTERN CONVERSE...SOUTHERN NIOBRARA...PLATTE...GOSHEN....AND
LARAMIE.

CITIES INCLUDED IN THIS WATCH ARE:

DOUGALS...LUSK...WHEATLAND...TORRINGTON...AND CHEYENNE.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES
AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.  PERSONS
IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER
CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

WCJIN-WYSE-WYNE

MOORE
Special weather statement, Jun 22, 3:44 PM MDT, 34 minutes before
NEZ001>003-019>021-054-055-222200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
334 PM MDT SAT JUN 22 1996

...A TORNADO WATCH IS IN EFFECT FOR THE PANHANDLE UNTIL 900 PM MDT...

AT 340 PM MDT...DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS...
SOME WITH VERY HEAVY RAINFALL AND POSSIBLE SMALL HAIL EXTENDING
FROM LUSK TO 25 MILES NORTHWEST OF CHEYENNE.

THUNDERSTORMS WITH VERY HEAVY RAINFALL AND POSSIBLE SMALL HAIL
WERE LOCATED 10 MILES SOUTH OF LUSK...AND 20 MILES WEST OF TORRINGTON.
THESE STORMS WERE MOVING NORTHEAST AT 35 MPH WHILE THE LINE WAS MOVING
EAST AT 30 MPH.  THIS LINE WILL CONTINUE MOVING EAST AND MOVE INTO THE
NORTHERN NEBRASKA PANHANDLE BY 415 PM AND INTO SOUTHERN SECTIONS OF THE
NEBRASKA PANHANDLE AROUND 500 PM.

PERSONS IN THE PANHANDLE OF NEBRASKA SHOULD BE ON THE LOOKOUT FOR
THESE STORMS.  SOME OF THESE STORMS MAY PRODUCE LARGE HAIL AND STRONG
GUSTY WINDS...AND EVEN A TORNADO.

WCJIN-WYSE
Special weather statement, Jun 22, 4:05 PM MDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER CHEYENNE WY
400 PM MDT SAT JUN 22 1996

...A TORNADO WATCH IS IN EFFECT UNTIL 900 PM MDT FOR ALL OF EASTERN
WYOMING...

THE STORM PREDICTION CENTER HAS ISSUED ANOTHER TORNADO WATCH SO NOW
ALL OF EASTERN WYOMING IS UNDER A TORNADO WATCH UNTIL 900 PM MDT.
COUNTIES IN THIS WATCH INCLUDE:

SHERIDAN...JOHNSON...CAMBELL...CROOK...WESTON...EASTERN CONVERSE...
NIOBRARA...PLATTE...GOSHEN....AND LARAMIE.

CITIES INCLUDED IN THIS WATCH ARE:

SHERIDAN...BUFFALO...GILLETTE...SUNDANCE...NEWCASTLE... DOUGLAS...LUSK
...WHEATLAND...TORRINGTON...AND CHEYENNE.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES
AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.  PERSONS
IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER
CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

WCJIN-WYSE-WYNE

BAKER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 8:23 PM MDTSevere Thunderstorm WarningCYSNiobrara37 min
Jun 22, 3:05 PM MDTSevere Thunderstorm WarningCYSPlatte25 min

Nearby

Tornado Warnings in Wyoming, 1996Every tornado warning in 1996Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.