Alert archive / Wyoming / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 57, NWS Cheyenne, WY

August 28, 1995Goshen County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 28, 1995, 4:35 PM MDT for Goshen County, Wyoming. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Aug 28, 1995, 4:35 PM MDT (22:35 UTC)
Expired
Aug 28, 1995, 5:00 PM MDT
In force
25 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Goshen County, WY

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 10.6 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 1995-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 760 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, Rapid City, SD at 12:00Z on 1995-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 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
760 J/kg
Mixed-layer CIN
-240 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KCYS 282237 RRA
SVRCYS
WYC015-282300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
435 PM MDT MON AUG 28 1995
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST WYOMING
 
   ...NORTHERN GOSHEN COUNTY
 
DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES SOUTH OF
LUSK IN NORTHERN GOSHEN C&OUNTY. THE STORM WAS MOVING EAST AT
20 MILES AN HOUR.
 
DAMAGING WINDS...LARGE HAIL AND BRIEF HEAVY RAINS ARE LIKELY WITH THIS
STORM.  GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS!
 
WYCJIN-WYSE
PAL

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 28, 4:28 PM MDT, 7 minutes before
WYZ060-NEZ001-282330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
430 PM MDT MON AUG 28 1995

...THUNDERSTORMS IN NORTHERN GOSHEN COUNTY WYOMING ARE MOVING TOWARDS
WESTERN SIOUX COUNTY NEBRASKA...

THUNDERSTORMS ARE MOVING ACROSS NORTHERN GOSHEN COUNTY IN WYOMING NEAR
JAY EM.  THIS IS 21 MILES SOUTH OF LUSK.  MOVEMENT WAS EAST AROUND 20
MILES AN HOUR.  AT THIS SPEED...THE STORMS WILL ENTER WESTERN SIOUX
COUNTY NEBRASKA BETWEEN 445 AND 500 PM.

BRIEF HEAVY RAIN AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
DANGEROUS LIGHTNING CAN ALSO BE EXPECTED.

BE PREPARED TO TAKE SHELTER...PREFERABLY INDOORS...IF THREATENING
WEATHER APPROACHES.

WCJIN-WYSE-WYNE
CGB
Special weather statement, Aug 28, 4:30 PM MDT, 5 minutes before
WYZ060-NEZ001-282330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
430 PM MDT MON AUG 28 1995

...THUNDERSTORMS IN NORTHERN GOSHEN COUNTY WYOMING ARE MOVING TOWARDS
WESTERN SIOUX COUNTY NEBRASKA...

THUNDERSTORMS ARE MOVING ACROSS NORTHERN GOSHEN COUNTY IN WYOMING NEAR
JAY EM.  THIS IS 21 MILES SOUTH OF LUSK.  MOVEMENT WAS EAST AROUND 20
MILES AN HOUR.  AT THIS SPEED...THE STORMS WILL ENTER WESTERN SIOUX
COUNTY NEBRASKA BETWEEN 445 AND 500 PM.

BRIEF HEAVY RAIN AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
DANGEROUS LIGHTNING CAN ALSO BE EXPECTED.

BE PREPARED TO TAKE SHELTER...PREFERABLY INDOORS...IF THREATENING
WEATHER APPROACHES.

WCJIN-WYSE-WYNE
CGB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 4:58 PM MDTSevere Thunderstorm WarningCYSGoshen47 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 1995Every severe thunderstorm warning in 1995

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.