Alert archive / Wyoming / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 53, NWS Cheyenne, WY

August 11, 1995Goshen County, Laramie County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 11, 1995, 4:29 PM MDT for Goshen County, Laramie County, Wyoming. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Aug 11, 1995, 4:29 PM MDT (22:29 UTC)
Expired
Aug 11, 1995, 5:00 PM MDT
In force
31 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

Counties Goshen County, WY, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 65 km from the middle of the area, began a volume at 22:34 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

Denver, CO (KDNR), launched 12:00Z, 10.5 hours before the alert went out and 230 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 12:00Z on 1995-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Denver, CO at 12:00Z on 1995-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2860 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
18 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 
WUUS1 KCYS 112251 RRA
SVRCYS
WYC015-021-112300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED TO INCLUDE GOSHEN COUNTY CODING.
NATIONAL WEATHER SERVICE CHEYENNE WY
429 PM MDT FRI AUG 11 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

   ...EASTERN LARAMIE COUNTY AND SOUTHERN GOSHEN COUNTY

THE SEVERE THUNDERSTORM WARNING IN LARAMIE COUNTY OF SOUTHEAST WYOMING
HAS BEEN EXTENDED FOR EASTERN LARAMIE COUNTY UNTIL 5 PM THIS EVENING.
THIS DANGEROUS STORM PRODUCED GUSTS TO 60 MILES AN HOUR IN NORTH
CHEYENNE EARLIER ALONG WITH BRIEF HEAVY RAIN.  DOPPLER RADAR
INDICATES THAT THE STRONG WINDS PERSISTS.  THE STORM WAS MOVING
NORTHEAST AT 20 MILES AN HOUR ALONG US HIGHWAY 85 TOWARDS LAGRANGE IN
SOUTHERN GOSHEN COUNTY.

THIS STORM HAS A HISTORY OF DAMAGING WIND.  GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

WYCJIN-WYSE
LAUZE

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 11, 3:47 PM MDT, 42 minutes before
WYZ063>070-NEZ019-020-054-112245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
348 PM MDT FRI AUG 11 1995

...SCATTERED THUNDERSTORMS WERE OCCURRING IN FAR SOUTHEAST WYOMING...

SCATTERED THUNDERSTORMS WERE RUMBLING OVER FAR SOUTHEAST WYOMING THIS
AFTERNOON.  AT 345 PM MDT...THE STRONGEST THUNDERSTORM WAS ABOUT 15
MILES SOUTHWEST OF CHEYENNE.  ANOTHER STRONG THUNDERSTORM WAS 10 MILES
NORTHEAST OF CHEYENNE.  HEAVY RAIN AND POSSIBLY SOME SMALL HAIL WERE
OCCURRING WITH THESE TWO STORMS.

ALL OF THE THUNDERSTORMS WERE MOVING NORTHEAST AROUND 20 MPH.  SOME OF
THESE STORMS WILL MOVE INTO THE SOUTHWEST PART OF THE NEBRASKA
PANHANDLE AFTER 4 PM.

PEOPLE IN SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE SHOULD BE ALERT
FOR THUNDERSTORMS INTO THIS EVENING.  IF A STORM APPROACHES YOUR AREA
...GET INSIDE UNTIL THE STORM PASSES.
<
WCJIN-WYSE

HATTEN
Special weather statement, Aug 11, 3:48 PM MDT, 41 minutes before
WYZ063>070-NEZ019-020-054-112245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
348 PM MDT FRI AUG 11 1995

...SCATTERED THUNDERSTORMS WERE OCCURRING IN FAR SOUTHEAST WYOMING...

SCATTERED THUNDERSTORMS WERE RUMBLING OVER FAR SOUTHEAST WYOMING THIS
AFTERNOON.  AT 345 PM MDT...THE STRONGEST THUNDERSTORM WAS ABOUT 15
MILES SOUTHWEST OF CHEYENNE.  ANOTHER STRONG THUNDERSTORM WAS 10 MILES
NORTHEAST OF CHEYENNE.  HEAVY RAIN AND POSSIBLY SOME SMALL HAIL WERE
OCCURRING WITH THESE TWO STORMS.

ALL OF THE THUNDERSTORMS WERE MOVING NORTHEAST AROUND 20 MPH.  SOME OF
THESE STORMS WILL MOVE INTO THE SOUTHWEST PART OF THE NEBRASKA
PANHANDLE AFTER 4 PM.

PEOPLE IN SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE SHOULD BE ALERT
FOR THUNDERSTORMS INTO THIS EVENING.  IF A STORM APPROACHES YOUR AREA
...GET INSIDE UNTIL THE STORM PASSES.
<
WCJIN-WYSE

HATTEN
Special weather statement, Aug 11, 4:20 PM MDT, 9 minutes before
NEZ001-002-003-019-020-021-054-055-120015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
417 PM MDT FRI AUG 11 1995

...THUNDERSTORMS IN SOUTHEAST WYOMING MOVING INTO THE NEBRASKA
PANHANDLE...

AT 415 PM MDT...STRONG THUNDERSTORMS IN SOUTHEAST WYOMING WILL MOVE INTO
THE NEBRASKA PANHANDLE.  THE FIRST STORM WILL MOVE INTO WESTERN KIMBALL
COUNTY ALONG INTERSTATE 80 BY 425 PM.   OTHER THUNDERSTORMS WILL MOVE
INTO BANNER COUNTY AROUND 440 PM MDT.

A SEVERE THUNDERSTORM AROUND CHEYENNE WYOMING HAVE PRODUCED WIND GUSTS
OVER 60 MPH AND VERY HEAVY RAIN.  PEOPLE IN THE NEBRASKA PANHANDLE SHOULBE PREPARED FOR POSSIBLE SEVERE THUNDERSTORMS THE REST OF THIS AFTERNOON
AND EVENING.R

BAKER

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; radar from the NEXRAD Level II archive.