Alert archive / Wyoming / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 208, NWS Cheyenne, WY

August 15, 1996Converse County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 15, 1996, 6:30 PM MDT for Converse County, Wyoming. It was in force for 45 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
Aug 15, 1996, 6:30 PM MDT (00:30 UTC)
Expired
Aug 15, 1996, 7:15 PM MDT
In force
45 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Converse County, WY

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.5 hours before the alert went out and 394 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, Denver, CO at 00:00Z on 1996-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1025 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 1996-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
1025 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1803 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

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, Aug 15, 12:54 PM MDT, 5 hours 36 minutes before
WYZ059-060-064-065-066-067-068-069-070-152000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1254 PM MDT THU AUG 15 1996

...STRONG THUNDERSTORMS CONTINUE RUMBLING OVER SOUTHEAST AND EAST
CENTRAL WYOMING...

AT 1252 PM MDT...DOPPLER RADAR CONTINUED TO SHOW THUNDERSTORMS
DEVELOPING OVER SOUTHEAST AND EAST CENTRAL WYOMING.  THE STRONGEST STORM
WAS IN SOUTHWEST NIOBRARA COUNTY...20 MILES WEST OF LUSK.  THE STORMS
WERE MOVING SOUTHEAST AT 15 MPH.

AREAL COVERAGE OF THUNDERSTORMS HAS INCREASED OVER THE PAST HOUR.  SOME
STORMS WILL HAVE THE POTENTIAL TO PRODUCE STRONG GUSTY
WINDS...HAIL...HEAVY RAIN...AND FREQUENT DEADLY LIGHTNING.

WCJIN-WYSE-WYNE

ROBINSON
Special weather statement, Aug 15, 1:34 PM MDT, 4 hours 56 minutes before
WYZ059-060-064-065-066-067-068-069-070-152030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
133 PM MDT THU AUG 15 1996

...THUNDERSTORMS MOVING OVER SOUTHEAST AND EAST CENTRAL WYOMING...

AT 130 PM MDT...THUNDERSTORMS CONTINUED TO MOVE ACROSS SOUTHEAST AND
EAST CENTRAL WYOMING.  THE STRONGEST STORMS WERE IN SOUTHWEST NIOBRARA
COUNTY 15 MILES WEST OF LUSK...AND NEAR THE INTERSECTION OF ALBANY...
CONVERSE...AND PLATTE COUNTIES.  THE STORMS WERE MOVING SOUTHEAST AT 20
MPH.

SMALL HAIL...STRONG GUSTY WINDS...AND HEAVY RAIN ALONG WITH DANGEROUS
LIGHTNING WILL BE THE MAIN HAZARDS FROM THESE STORMS.  STAY INDOORS WHEN
STORMS ARE IN YOUR AREA AND REMAIN AWAY FROM WINDOWS.

WCJIN-WYSE-WYNE

ROBINSON
Special weather statement, Aug 15, 1:41 PM MDT, 4 hours 49 minutes before
NEZ002-152045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
140 PM MDT THU AUG 15 1996

...A STRONG THUNDERSTORM HAS DEVELOPED OVER SOUTHERN DAWES COUNTY IN THE
NEBRASKA PANHANDLE...

AT 138 PM MDT...CHEYENNE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM
DEVELOPING OVER SOUTHERN DAWES COUNTY...20 MILES SOUTHWEST OF CHADRON.
THIS STORM IS MOVING EAST AT 20 MPH AND WILL BE IN WESTERN SHERIDAN
COUNTY BY 220 PM MDT.

HEAVY RAIN....GUSTY WINDS...DEADLY LIGHTNING AND SOME SMALL HAIL WILL BE
NOTED IN SOUTHERN DAWES COUNTY UNTIL 215 PM MDT.

ROBINSON
Special weather statement, Aug 15, 2:14 PM MDT, 4 hours 16 minutes before
WYZ059-060-064-065-066-067-068-069-070-NEZ001-002-003-019-020-021-
054-055-152115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
213 PM MDT THU AUG 15 1996

...THUNDERSTORMS MARCHING ACROSS SOUTHEAST AND EAST CENTRAL WYOMING INTO
THE NEBRASKA PANHANDLE...

AT 209 PM MDT...CHEYENNE WEATHER RADAR INDICATED SEVERAL STRONG
THUNDERSTORMS IN SOUTHEAST AND EAST CENTRAL WYOMING...AS WELL AS SIOUX
AND DAWES COUNTIES IN THE NEBRASKA PANHANDLE.  THE STORMS WERE MOVING
SOUTHEAST AT 20 MPH AND ARE EXPECTED TO MOVE INTO THE REMAINDER OF THE
NEBRASKA PANHANDLE BY 400 PM MDT.

STRONG GUSTY WINDS...HEAVY RAIN...DEADLY LIGHTNING AND SMALL HAIL ARE
POSSIBLE WITH THESE STORMS.  IF YOU AR
E IN THE PATH OF A STORM TAKE
COVER INDOORS AND REMAIN AWAY FROM WINDOWS.

WCJIN-WYSE-WYNE

ROBINSON
Special weather statement, Aug 15, 2:59 PM MDT, 3 hours 31 minutes before
WYZ060-066>070-152200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
255 PM MDT THU AUG 15 1996

...A TORNADO WATCH HAS BEEN ISSUED FOR PARTS OF SOUTHEAST WYOMING...

A TORNADO WATCH IS IN EFFECT FOR LARAMIE...GOSHEN...PLATTE AND SOUTHERN
NIOBRARA COUNTIES IN SOUTHEAST WYOMING UNTIL 8 PM MDT.  A MOIST AND
UNSTABLE AIRMASS COMBINED WITH AN APPROACHING UPPER LEVEL DISTURBANCE
WILL BRING A GOOD CHANCE OF SEVERE THUNDERSTORMS TO SOUTHEAST WYOMING
THIS AFTERNOON AND EVENING.  DUE TO A FAVORABLE WIND SHEAR ENVIRONMENT
...THESE STORMS COULD ALSO SPAWN TORNADOES.

AT 250 PM DOPPLER RADAR SHOWED A LINE OF THUNDERSTORMS FROM SOUTHWEST
NIOBRARA COUNTY SOUTH TO THE COLORADO BORDER NEAR CHEYENNE.  SEVERAL
STRONG STORMS WERE WITHIN THIS LINE.

PEOPLE IN SOUTHEAST WYOMING SHOULD BE ALERT TO APPROACHING STORMS AND
BE PREPARED TO SEEK SHELTER.  STAY TUNED TO NOAA WEATHER RADIO OR LOCAL
RADIO AND TELEVISION STATIONS FOR LATER WARNIN,GS AND STATEMENTS.

HARRISON
Special weather statement, Aug 15, 5:23 PM MDT, 1 hour 7 minutes before
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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; the sounding from the Mesonet's radiosonde archive.