Alert archive / Wyoming / Tornado Warnings in 1995

Tornado Warning 3, NWS Cheyenne, WY

May 25, 1995Sweetwater County, Wyoming

NWS Cheyenne, WY issued this tornado warning at May 25, 1995, 2:34 PM MDT for Sweetwater County, Wyoming. It was in force for 11 min.

The area

The counties it named.

The facts

Issued
May 25, 1995, 2:34 PM MDT (20:34 UTC)
Expired
May 25, 1995, 2:45 PM MDT
In force
11 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Sweetwater County, WY

The nearest sounding before it

Lander/Hunt Fiel, WY (KLND), launched 12:00Z, 8.6 hours before the alert went out and 130 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, Lander/Hunt Fiel, WY at 12:00Z on 1995-05-25Temperature 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, Lander/Hunt Fiel, WY at 12:00Z on 1995-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 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
566 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
175 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 252036
TORCYS
WYC037-252045-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
234 PM MDT THU MAY 25 1995
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  245 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHWEST WYOMING
 
   ...EAST CENTRAL SWEETWATER COUNTY
 
AT 230 PM A TORNADO WAS SPOTTED BY SWEETER COUNTY SHERIFF PERSONNEL 10
MILES WEST OF WAMSUTTER...OR 48 MILES WEST OF RAWLINS. THE TORNADO WAS
REPORTED MOVING SLOWLY NORTHWEST.
 
 
IF YOU ARE IN A CAR...GO TO A NEARBY STURDY BUILDING!  AS A LAST
RESORT LIE FLAT IN A DITCH AND COVER YOUR HEAD.
 
 
CGB
WCJIN-WYSW-WYSE
&

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, May 25, 12:44 PM MDT, 1 hour 50 minutes before
WYZ020-022-023-024-025-251950-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1243 PM MDT THU MAY 25 1995

...STRONG THUNDERSTORMS DEVELOPING SOUTHWEST OF ROCK SPRINGS...

SALT LAKE RADAR WAS SHOWING STRONG THUNDRSTORMS DEVELOPING SOUTHWEST OF
SWEETWATER COUNTY IN SOUTHWEST WYOMING.  ONE STRONG THUNDEESTORM WAS
LOCATED 10 MILES SOUTHWEST OF ROCK SPRING.  THIS STORM WAS MOVING TO
THE NORTH-NORTHEAST AT 20 MILES AN HOUR AND SHOULD IMFPACT THE CITY
OF ROCK SPRING AROUND 110 PM THIS AFTERNOON.

SMALL HAIL...HEAVY RAIN...AND DANGEROUS LIGHTNING SHOULD BE EXPECTED
WITH THIS STORM.

LAUZE
Special weather statement, May 25, 1:14 PM MDT, 1 hour 20 minutes before
WYZ015-062-064-065-252200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
115 PM MDT THU MAY 25 1995

...THUNDERSTORMS ARE DEVELOPING IN SOUTHEAST WYOMING...

THUNDERSTORMS HAVE DEVELOPED IN PARTS OF CARBON AND ALBANY COUNTIES.
AT 1PM...THE STRONGEST STORM WAS ABOUT 10 MILES NORTHWEST OF MEDICINE
BOW...OR ABOUT 55 MILES NORTHWEST OF LARAMIE.  THIS STORM WAS MOVING
NORTHEAST AROUND 20 MILES AN HOUR.

THESE STORMS WILL LIKELY PRODUCE SMALL HAIL...BRIEF HEAVY RAINS...
DANGEROUS LIGHTNING AND BRIEF GUSTY WINDS.  IF THREATENING WEATHER
APPROACHES...MOVE TO A SAFE PLACE...PREFERABLY INDOORS.

CGB
WCJIN-WYSE
Special weather statement, May 25, 1:46 PM MDT, 48 minutes before
WYZ022-024-252200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
145 PM MDT THU MAY 25 1995

...THUNDERSTORMS CONTINUE MOVING ACROSS SOUTHWEST WYOMING...

THUNDERSTORMS CONTINUE OVER SOUTHWEST WYOMING.  AT 130 PM THE STRONGEST
STORM WAS ABOUT 10 MILES SOUTHEAST OF ROCK SPRINGS.  IT WAS MOVING
NORTHEAST AROUND 15 MILES AN HOUR.

THESE STORMS WILL LIKELY PRODUCE SMALL HAIL...BRIEF HEAVY RAINS...
DANGEROUS LIGHTNING AND BRIEF GUSTY WINDS.  IF THREATENING WEATHER
APPROACHES...MOVE TO A SAFE PLACE...PREFERABLY INDOORS.

CGB
WCJIN-WYSW

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 4:30 PM MDTTornado WarningCYSCarbon15 min
May 25, 4:55 PM MDTSevere Thunderstorm WarningCYSCarbon35 min

Nearby

Tornado Warnings in Wyoming, 1995Every tornado warning in 1995Tornadoes 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.