Alert archive / Wyoming / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 49, NWS Cheyenne, WY

July 30, 1995Albany County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 30, 1995, 3:30 PM MDT for Albany County, Wyoming. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jul 30, 1995, 3:30 PM MDT (21:30 UTC)
Expired
Jul 30, 1995, 4:15 PM MDT
In force
45 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Albany County, WY

The radar

The Cheyenne radar (KCYS), 95 km from the middle of the area, began a volume at 21:31 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

Riverton, WY (KRIW), launched 12:00Z, 9.5 hours before the alert went out and 270 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, Riverton, WY at 12:00Z on 1995-07-30Temperature 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, Riverton, WY at 12:00Z on 1995-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 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
3748 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
235 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 302133 RRA
SVRCYS
WYC001-302215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
330 PM MDT SUN JUL 30 1995
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 415 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST WYOMING
 
   ...SOUTHEASTERN ALBANY COUNTY AND WEST CENTRAL LARAMIE COUNTY
 
THIS WARNING INCLUDES THE TOWNS OF HORSE CREEK AND FEDERAL.
 
AT 325 PM RADAR IN CHEYENNE INDICATED A SEVERE STORM 5 MILES
NORTH OF BUFORD IN SOUTHEAST ALBANY COUNTY. THIS STORM WAS
MOVING NORTHEAST AT 20 MPH.
 
DAMAGING WINDS AND LARGE HAIL ARE LIKELY.  GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!
 
DAW

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, Jul 30, 1:57 PM MDT, 1 hour 33 minutes before
WYZ061-062-063-064-065-066-067-068-069-070-302100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
157 PM MDT SUN JUL 30 1995

...STRONG THUNDERSTORMS DEVELOPING IN SOUTHEAST AND SOUTH CENTRAL
WYOMING...

AT 145 PM DOPPLER RADAR IN CHEYENNE SHOWED THAT STRONG THUNDERSTORMS
WERE DEVELOPING IN CHEYENNE...AS WELL AS IN EASTERN LARAMIE COUNTY
JUST EAST OF BURNS...AND IN SOUTHERN CARBON COUNTY SOUTH OF SARATOGA.
STORMS ARE MOVING TO THE NORTHEAST AT 15 MPH.

AT THIS POINT DEADLY LIGHTNING IS THE MOST THREATENING ASPECT OF
THESE STORMS.  HOWEVER SMALL HAIL...BRIEF HEAVY RAIN AND STRONG
WINDS ARE ALSO POSSIBLE.  CONDITIONS ARE FAVORABLE FOR FURTHER
STRENGTHENING OF THESE STORMS IN THE NEXT HOUR...AS WELL AS NEW
STORM DEVELOPMENT OVER THE SOUTHEASTERN PORTION OF THE STATE.

DAW
Special weather statement, Jul 30, 1:59 PM MDT, 1 hour 31 minutes before
WYZ061-062-063-064-065-066-067-068-069-070-302100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
157 PM MDT SUN JUL 30 1995

...STRONG THUNDERSTORMS DEVELOPING IN SOUTHEAST AND SOUTH CENTRAL
WYOMING...

AT 145 PM DOPPLER RADAR IN CHEYENNE SHOWED THAT STRONG THUNDERSTORMS
WERE DEVELOPING IN CHEYENNE...AS WELL AS IN EASTERN LARAMIE COUNTY
JUST EAST OF BURNS...AND IN SOUTHERN CARBON COUNTY SOUTH OF SARATOGA.
STORMS ARE MOVING TO THE NORTHEAST AT 15 MPH.

AT THIS POINT DEADLY LIGHTNING IS THE MOST THREATENING ASPECT OF
THESE STORMS.  HOWEVER SMALL HAIL...BRIEF HEAVY RAIN AND STRONG
WINDS ARE ALSO POSSIBLE.  CONDITIONS ARE FAVORABLE FOR FURTHER
STRENGTHENING OF THESE STORMS IN THE NEXT HOUR...AS WELL AS NEW
STORM DEVELOPMENT OVER THE SOUTHEASTERN PORTION OF THE STATE.

DAW
Special weather statement, Jul 30, 2:42 PM MDT, 48 minutes before
WYZ068-070-NEZ001-002-003-019-020-021-054-055-302145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
242 PM MDT SUN JUL 30 1995

...STRONG THUNDERSTORM JUST NORTHWEST OF PINE BLUFFS...

A STRONG THUNDERSTORM POSSIBLY CONTAINING SMALL HAIL WAS LOCATED
ABOUT 5 MILES NORTHWEST OF PINE BLUFFS AT 235 PM.  THIS STORM
WAS LIKELY PRODUCING HEAVY RAIN...STRONG WINDS...AND DEADLY
LIGHTNING.  IT WAS MOVING NORTHEAST AT 15 MPH AND WILL BE CROSSING
INTO WESTERN KIMBALL COUNTY NEBRASKA BY 255 PM.

RESIDENTS IN ALL OF THE NEBRASKA PANHANDLE AND SOUTHEAST WYOMING
SHOULD BE AWARE OF THE POSSIBILITY OF STRONG THUNDERSTORMS DURING
THE REMAINDER OF THE AFTERNOON.  STAY TUNED TO LOCAL MEDIA OR
NOAA WEATHER RADIO FOR FURTHER UPDATES.

DAW
Special weather statement, Jul 30, 2:43 PM MDT, 47 minutes before
WYZ068-070-NEZ001-002-003-019-020-021-054-055-302145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
242 PM MDT SUN JUL 30 1995

...STRONG THUNDERSTORM JUST NORTHWEST OF PINE BLUFFS...

A STRONG THUNDERSTORM POSSIBLY CONTAINING SMALL HAIL WAS LOCATED
ABOUT 5 MILES NORTHWEST OF PINE BLUFFS AT 235 PM.  THIS STORM
WAS LIKELY PRODUCING HEAVY RAIN...STRONG WINDS...AND DEADLY
LIGHTNING.  IT WAS MOVING NORTHEAST AT 15 MPH AND WILL BE CROSSING
INTO WESTERN KIMBALL COUNTY NEBRASKA BY 255 PM.

RESIDENTS IN ALL OF THE NEBRASKA PANHANDLE AND SOUTHEAST WYOMING
SHOULD BE AWARE OF THE POSSIBILITY OF STRONG THUNDERSTORMS DURING
THE REMAINDER OF THE AFTERNOON.  STAY TUNED TO LOCAL MEDIA OR
NOAA WEATHER RADIO FOR FURTHER UPDATES.

DAW

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 7:17 PM MDTSevere Thunderstorm WarningCYSSweetwater58 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; radar from the NEXRAD Level II archive.