Alert archive / Wyoming / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 49, NWS Cheyenne, WY

June 29, 1994Laramie County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 29, 1994, 2:43 PM MDT for Laramie County, Wyoming. It was in force for 47 min.

The area

The counties it named.

The facts

Issued
Jun 29, 1994, 2:43 PM MDT (20:43 UTC)
Expired
Jun 29, 1994, 3:30 PM MDT
In force
47 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Laramie County, WY

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 8.7 hours before the alert went out and 202 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 1994-06-29Temperature 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 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 1994-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.19395878Sfc1 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
3368 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
114 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 292044 RRA
SVRCYS
WYC021-292130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
243 PM MDT WED JUN 29 1994
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST WYOMING
 
   ...CENTRAL AND SOUTHEASTERN LARAMIE COUNTY
 
AT 240 PM MDT...NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF
THUNDERSTORMS EXTENDING FROM CHEYENNE TO 30 MILES NORTHEAST OF CHEYENNE.
THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 30 MPH. COMMUNITIES
INCLUDED IN THE WARNING ARE THE EAST SIDE OF CHEYENNE...
CARPENTER...BURNS...EGBERT...AND PINE BLUFFS.
 
AT 240 PM...WINDS IN EXCESS OF 60 MPH WERE REPORTED ON THE EAST SIDE OF
CHEYENNE.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 60 MPH...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
 
JBS/DJV
 
&

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 29, 11:06 AM MDT, 3 hours 37 minutes before
WYZALL-292200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1106 AM MDT WED JUN 29 1994

...SHOWERS AND THUNDERSTORMS WILL PRODUCE STRONG WIND GUSTS OVER PARTS
OF WYOMING THIS AFTERNOON AND EVENING...

SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER MAINLY THE EAST PART OF
WYOMING THIS AFTERNOON.  MOST OF THOSE WILL PRODUCE STRONG WIND
GUSTS...BUT VERY LITTLE IN THE WAY OF RAINFALL.

AT 1100 AM...SOME SHOWERS WERE NOTED OVER CENTRAL WYOMING.  BY MID
AFTERNOON...SHOWERS AND THUNDERSTORMS WILL BE SCATTERED IN COVERAGE
OVER EASTERN WYOMING.  WIND GUSTS FROM THE SHOWERS AND THUNDERSTORMS
MAY BRIEFLY GUST TO 50 MPH.  THE SHOWERS AND THUNDERSTORMS WILL
CONTINUE INTO THE EARLY EVENING HOURS.

PEOPLE IN WYOMING THROUGH THE EVENING HOURS SHOULD BE PREPARED FOR THE
SUDDEN AND STRONG WIND GUSTS ASSOCIATED WITH THE THUNDERSTORMS.

WCJIN-WYALL
WEILAND
Special weather statement, Jun 29, 11:07 AM MDT, 3 hours 36 minutes before
WYZALL-292200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1106 AM MDT WED JUN 29 1994

...SHOWERS AND THUNDERSTORMS WILL PRODUCE STRONG WIND GUSTS OVER PARTS
OF WYOMING THIS AFTERNOON AND EVENING...

SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER MAINLY THE EAST PART OF
WYOMING THIS AFTERNOON.  MOST OF THOSE WILL PRODUCE STRONG WIND
GUSTS...BUT VERY LITTLE IN THE WAY OF RAINFALL.

AT 1100 AM...SOME SHOWERS WERE NOTED OVER CENTRAL WYOMING.  BY MID
AFTERNOON...SHOWERS AND THUNDERSTORMS WILL BE SCATTERED IN COVERAGE
OVER EASTERN WYOMING.  WIND GUSTS FROM THE SHOWERS AND THUNDERSTORMS
MAY BRIEFLY GUST TO 50 MPH.  THE SHOWERS AND THUNDERSTORMS WILL
CONTINUE INTO THE EARLY EVEN<ING HOURS.

PEOPLE IN WYOMING THROUGH THE EVENING HOURS SHOULD BE PREPARED FOR THE
SUDDEN AND STRONG WIND GUSTS ASSOCIATED WITH THE THUNDERSTORMS.

WCJIN-WYALL
WEILAND
Special weather statement, Jun 29, 2:13 PM MDT, 30 minutes before
WYZ022>025-061>070-292100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
213 PM MDT WED JUN 29 1994

...THUNDERSTORMS WERE DEVELOPING IN SOUTH CENTRAL AND SOUTHEAST
WYOMING THIS AFTERNOON...

AT 205 PM...SCATTERED THUNDERSTORMS WERE DEVLOPING IN SOUTH CENTRAL
AND SOUTHEAST WYOMING.  THE STORMS WERE PRODUCING LITTLE RAINFALL BUT
PLENTY OF LIGHTNING AND STRONG GUSTY WINDS.  ALL STORMS WERE MOVING
SOUTHEAST AROUND 30 MPH.

THE STRONGEST STORMS WERE LOCATED IN WEST CENTRAL LARAMIE COUNTY NEAR
THE COMMUNITY OF HORSE CREEK...WHICH IS 27 MILES NORTHWEST OF CHEYENNE.
ANOTHER STRONG STORM WAS LOCATED IN SOUTHWEST CARBON COUNTY NEAR BAGGS
...WHICH IS 56 MILES SOUTHWEST OF RAWLINS.

THE STORMS WILL CONTINUE TO PRODUCE DANGEROUS LIGHTNING...WIND GUSTS
TO 50 MPH...BUT LITTLE RAINFALL.  PEOPLE IN SOUTH CENTRAL AND SOUTHEAST
WYOMING SHOULD BE PREPARED FOR THUNDERSTORMS THROUGH THE AFTERNOON
HOURS.  IF A STORM APPROACHES...MOVE TO A SAFE SHELTER IF POSSIBLE.

WCJIN-WYSE-WYSW
DJV
Special weather statement, Jun 29, 2:13 PM MDT, 30 minutes before
WYZ022>025-061>070-292100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
213 PM MDT WED JUN 29 1994

...THUNDERSTORMS WERE DEVELOPING IN SOUTH CENTRAL AND SOUTHEAST
WYOMING THIS AFTERNOON...

AT 205 PM...SCATTERED THUNDERSTORMS WERE DEVLOPING IN SOUTH CENTRAL
AND SOUTHEAST WYOMING.  THE STORMS WERE PRODUCING LITTLE RAINFALL BUT
PLENTY OF LIGHTNING AND STRONG GUSTY WINDS.  ALL STORMS WERE MOVING
SOUTHEAST AROUND 30 MPH.

THE STRONGEST STORMS WERE LOCATED IN WEST CENTRAL LARAMIE COUNTY NEAR
THE COMMUNITY OF HORSE CREEK...WHICH IS 27 MILES NORTHWEST OF CHEYENNE.
ANOTHER STRONG STORM WAS LOCATED IN SOUTHWEST CARBON COUNTY NEAR BAGGS
...WHICH IS 56 MILES SOUTHWEST OF RAWLINS.

THE STORMS WILL CONTINUE TO PRODUCE DANGEROUS LIGHTNING...WIND GUSTS
TO 50 MPH...BUT LITTLE RAINFALL.  PEOPLE IN SOUTH CENTRAL AND SOUTHEAST
WYOMING SHOULD BE PREPARED FOR THUNDERSTORMS THROUGH THE AFTERNOON
HOURS.  IF A STORM APPROACHES...MOVE TO A SAFE SHELTER IF POSSIBLE.

WCJIN-WYSE-WYSW
DJV

Nearby

Severe Thunderstorm Warnings in Wyoming, 1994Every severe thunderstorm warning in 1994

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.