Alert archive / Wyoming / Tornado Warnings in 1994

Tornado Warning 15, NWS Cheyenne, WY

July 15, 1994Goshen County, Wyoming

NWS Cheyenne, WY issued this tornado warning at Jul 15, 1994, 5:45 PM MDT for Goshen County, Wyoming. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Jul 15, 1994, 5:45 PM MDT (23:45 UTC)
Expired
Jul 15, 1994, 6:15 PM MDT
In force
30 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, 11.8 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 1994-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 127 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 1994-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
127 J/kg
Mixed-layer CIN
-177 J/kg
Mixed-layer LCL
1637 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Jul 15, 3:45 PM MDT, 2 hours before
WYZ069-070-152245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
345 PM MDT FRI JUL 15 1994

...ANOTHER STORM HAS BEEN BUILDING NEAR HORSE CREEK...

PEA TO MARBLE SIZED HAIL WAS REPORTED AT HORSE CREEK AT 335 PM MDT.
HORSE CREEK IS 27 MILES NORTHWEST OF CHEYENNE. THE LEADING EDGE OF THE
STORM WAS JUST ON THE NORTHWEST SIDE OF CHEYENNE. A HAM RADIO OPERATOR
WHO WAS STORM SPOTTING REPORTS WINDS IN EXCESS OF 35 MILES AN HOUR.
THE MAIN STORM WAS NORTH OF THIS LOCATION AND WAS MOVING EAST AT
25 MILES AN HOUR. IT WILL CROSS INTERSTATE 25 NEAR THE LITTLE BEAR EXIT
BY 410 PM.

THIS STORM WILL PRODUCE MARBLE SIZED HAIL AND WINDS OF 40 TO 45 MILES AN
HOUR BETWEEN NOW AND 415 PM2.

WCJIN-WYSE
CAS

&
Special weather statement, Jul 15, 4:04 PM MDT, 1 hour 41 minutes before
NEZ001>004-019>022-054>056-152300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
404 PM MDT FRI JUL 15 1994

...TORNADO WATCH FOR THE NEBRASKA PANHANDLE...

A TORNADO WATCH IS IN EFFECT FOR THE ENTIRE NEBRASKA PANHANDLE UNTIL
9 PM MDT.  ALTHOUGH ONLY LIGHT TO MODERATE SHOWER ACTIVITY WAS THE ONLY
INDICATIONS ON RADAR...SEVERE WEATHER DEVELOPMENT COULD OCCUR RAPIDLY.

RESIDENTS OF THE NEBRASKA PANHANDLE SHOULD KEEP AN EYE TO THE SKY INTO
THE EVENING.
KYLE
Special weather statement, Jul 15, 4:33 PM MDT, 1 hour 12 minutes before
NEZ005-152330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF NE
432 PM MDT (532 PM CDT) FRI JUL 15 1994

...STRONG THUNDERSTORM ENTERING NORTHERN CHERRY COUNTY...

AT 430 PM MDT (530 PM CDT)...RADAR INDICATED A STRONG THUNDERSTORM 15
MILES WEST OF VALENTINE OR NEAR KILGORE NEBRASKA.  THIS STORM WAS MOVING
SOUTHEAST AT 25 MPH AND WILL MOVE ACROSS NORTHERN AND EASTERN CHERRY
COUNTY OVER THE NEXT HOUR.

*PERSONS IN THESE AREAS SHOULD BE PREPARED FOR BRIEF HEAVY
RAIN...DANGEROUS LIGHTNING...GUSTY WIND AND SMALL HAIL THROUGH 530 PM
MDT (630 PM CDT).

HORNE
Special weather statement, Jul 15, 5:03 PM MDT, 42 minutes before
NEZ001>004-019>022-054>056-160000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
503 PM MDT FRI JUL 15 1994

...TORNADO WATCH FOR THE NEBRASKA PANHANDLE...

A TORNADO WATCH IS IN EFFECT THE THE ENTIRE NEBRASKA PANHANDLE UNTIL
9 PM MDT.

AT 502 PM MDT...VERY LITTLE SHOWER ACTIVITY WAS INDICATED ON RADAR.
HOWEVER...SEVERE WEATHER OVER WYOMING COULD MOVE INTO THE PANHANDLE OR
COULD DEVELOP RAPIDLY...SO BE PREPARED FOR THE POSSIBILITIES OF
SEVERE WEATHER INTO THE EVENING.
KYLE
Special weather statement, Jul 15, 5:19 PM MDT, 26 minutes before
WYZ067-068-069-070-160015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
516 PM MDT FRI JUL 15 1994

...FORTY FIVE MILE AN HOUR WINDS HAVE BEEN REPORTED IN NORTHERN LARAMIE
COUNTY...

AT 510 PM MDT...ANOTHER THUNDERSTORM DEVELOPED ABOUT 20 MILES NORTH OF
CHEYENNE. A HAM RADIO OPERATOR IN THE AREA REPORTED NORTH WINDS AT 45
MILES AN HOUR FROM THIS STORM. MOVEMENT WAS TO THE EAST-SOUTHEAST AT 20
MILES AN HOUR. IT HAD JUST MOVED EAST OF INTERSTATE 25. THESE STORMS
HAVE PRODUCED MARBLE SIZED HAIL ALL AFTERNOON. ALTHOUGH NO REPORTS OF
HAIL HAVE COME IN FROM THIS STORM...IT IS LIKELY THAT A GOOD AMOUNT OF
HALF INCH HAIL WILL BE PRODUCED.

ELSEWHERE...A SEVERE THUNDERSTORM WARNING CONTINUES FOR SOUTHERN
GOSHEN COUNTY UNTIL 545 PM MDT.

WCJIN-WYSE
CAS

&
Special weather statement, Jul 15, 5:45 PM MDT, 0 minutes before
NEZ001>004-019>022-054>056-160045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
545 PM MDT FRI JUL 15 1994

...TORNADO WATCH FOR THE NEBRASKA PANHANDLE...
...A STRONG THUNDERSTORM WILL MOVE INTO SCOTTS BLUFF COUNTY...

A TORNADO WATCH IS IN EFFECT FOR ALL OF THE NEBRASKA PANHANDLE
COUNTIES UNTIL 9 PM MDT.

AT 542 PM MDT...RADAR INDICATED A VERY STRONG THUNDERSTORM OVER THE
WYOMING/SCOTTS BLUFF COUNTY BORDER.  THE STORM WAS 19 MILES WEST OF
SCOTTSBLUFF.

THE THUNDERSTORM WAS MOVING EAST AT 25 MPH AND SHOULD PASS THE
SCOTTSBLUFF/GERING VICINITY AFTER 615 PM MDT.

DURING A TORNADO WATCH...BE READY TO MOVE TO A SHELTER BELOW
GROUND OR TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE IF
A WARNING IS ISSUED OR IF A TORNADO IS SIGHTED.
KYLE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 2:37 AM MDTFlash Flood WarningCYSGoshen2 hr
Jul 15, 2:32 PM MDTSevere Thunderstorm WarningCYSLaramie43 min
Jul 15, 2:48 PM MDTSevere Thunderstorm WarningCYSGoshen42 min
Jul 15, 3:05 PM MDTSevere Thunderstorm WarningCYSLaramie40 min
Jul 15, 3:38 PM MDTSevere Thunderstorm WarningCYSLaramie52 min
Jul 15, 4:25 PM MDTSevere Thunderstorm WarningCYSLaramie35 min
Jul 15, 5:04 PM MDTSevere Thunderstorm WarningCYSGoshen41 min

Nearby

Tornado Warnings in Wyoming, 1994Every tornado warning in 1994Tornadoes 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.