Alert archive / Nebraska / Tornado Warnings in 1992

Tornado Warning 15, NWS Cheyenne, WY

July 11, 1992Cheyenne County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jul 11, 1992, 5:50 PM MDT for Cheyenne County, Nebraska. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1992, 5:50 PM MDT (23:50 UTC)
Expired
Jul 11, 1992, 6:15 PM MDT
In force
25 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Cheyenne County, NE

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 11.8 hours before the alert went out and 151 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 1992-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 222 joules per kilogram.LCLLFCEL10008507005003002001001 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 1992-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
222 J/kg
Mixed-layer CIN
-210 J/kg
Mixed-layer LCL
1589 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
71 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 11, 12:28 PM MDT, 5 hours 22 minutes before
WYZ025-029>034-063-112030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1227 PM MDT SAT JUL 11 1992

...SEVERAL QUITE STRONG THUNDERSTORMS CONTINUE IN SOUTHWEST WYOMING...

AT NOON RADAR AND LIGHTNING DETECTION EQUIPMENT SHOWED SEVERAL QUITE
STRONG THUNDERSTORMS IN SOUTHWEST WYOMING.  ONE STORM WAS 20 MILES
SOUTHWEST OF ROCK SPRINGS.  VERY HEAVY RAIN WAS REPORTED AT GREEN RIVER
WITH THIS STORM.

ANOTHER STORM WAS JUST EAST OF FLAMING GORGE RESERVOIR ABOUT 45 MILES
SOUTH OF ROCK SPRINGS.  A THIRD STORM WAS 45 MILES EAST OF EVANSTON.

THE STORMS WERE MOVING TO THE EAST AT 20 MILES AN HOUR.  THE STORM
JUST WEST OF ROCK SPRINGS WILL BE OVER THE CITY OF ROCK SPRINGS BY
130PM.

BRIEF HEAVY RAIN...STRONG GUSTY WINDS AND SMALL HAIL AS WELL AS DEADLY
LIGHTNING SHOULD BE EXPECTED WITH THESE STORMS.  BOATERS AND OTHER
PEOPLE OUTDOORS SHOULD BE PREPARED TO MOVE TO SAFETY IF A THREATENING
THUNDERSTORM APPROACHES.
COX
Special weather statement, Jul 11, 1:17 PM MDT, 4 hours 33 minutes before
WYZ066>073-112030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
117 PM MDT SAT JUL 11 1992

...THUNDERSTORMS DEVELOPING OVER SOUTHEAST WYOMING...

THUNDERSTORMS HAD BEGUN TO DEVELOP OVER SOUTHEAST WYOMING THIS AFTER-
NOON.  THE STRONGEST STRORMS WERE BETWEEN 20 AND 30 MILES SOUTH OF
TORRINGTON...NEAR HAWK SPRINGS RESERVOIR.  SMALL HAIL AND HEAVY RAIN
WAS LIKELY WITH THIS STORM. STORMS WERE MOVING EAST AT 20 TO 25 MILES
AN HOUR.

PEOPLE PLANNING OUTDOOR ACTIVITY IN SOUTHEAST WYOMING THIS AFTERNOON
SHOULD BE PREPARED FOR THUNDERSTORMS WITH HAIL...GUSTY WINDS AND
BRIEF HEAVY RAIN. BOATERS SHOULD GET OFF THE WATER AS SOON AS POSSIBLE
IF THUNDERSTORMS APPROACH.

SCOTT
Special weather statement, Jul 11, 2:13 PM MDT, 3 hours 37 minutes before
NEZ001-005-011-112115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
214 PM MDT SAT JUL 11 1992

...SEVERE THUNDERSTORM WATCH FOR NEBRASKA PANHANDLE UNTIL 900 PM MDT...

AT 212 PM MDT...STRONG THUNDERSTORMS WERE LOCATED 33 MILES SOUTHWEST OF
SCOTTSBLUFF IN BANNER COUNTY...AND 18 MILES WEST OF SCOTTSBLUFF NEAR
MORRILL IN WESTERN SCOTTSBLUFF.  THE STORMS WERE MOVING NORTHEAST AT
25 MPH.

HEAVY RAIN...STRONG GUSTY WINDS...AND SMALL HAIL ARE POSSIBLE WITH THESE
STORMS IN BANNER...SCOTTS BLUFF...AND SOUTHERN SIOUX COUNTIES UNTIL
315 PM MDT.

SEVERE THUNDERSTORM WATCH 601 IS IN EFFECT FOR THE ENTIRE NEBRASKA
PANHANDLE UNTIL 900 PM MDT THIS EVENING.
PFEIFFER
Special weather statement, Jul 11, 3:14 PM MDT, 2 hours 36 minutes before
WYZ063-064-065-112200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
310 PM MDT SAT JUL 11 1992

...THUNDERSTORMS WITH STRONG WINDS WERE IN SOUTH CENTRAL WYOMING...

THUNDERSTORMS WITH GUSTY WINDS AND BRIEF HEAVY RAIN WERE OVER
SOUTH-CENTRAL WYOMING THIS AFTERNOON.  AT 240 PM THE RAWLINS AIRPORT
HAD A GUST TO 55 MILES AN HOUR IN A THUNDERSTORM.

PEOPLE PLANNING OUTDOOR ACTIVITY IN SOUTH CENTRAL WYOMING THIS AFTERNOON
SHOULD BE PREPARED FOR THUNDERSTORMS WITH...GUSTY WINDS...HAIL AND
BRIEF HEAVY RAIN.

SCOTT
Special weather statement, Jul 11, 4:30 PM MDT, 1 hour 20 minutes before
WYZ062-070-073-112315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
429 PM MDT SAT JUL 11 1992

...A FEW THUNDERSTORMS LINGERED IN THE SOUTHEAST CORNER OF WYOMING LATE
THIS AFTERNOON...

AT 425 PM MDT...A FEW THUNDERSTORMS CONTINUED IN SOUTHEAST GOSHEN AND
SOUTHEAST LARAMIE COUNTIES.  HOWEVER...THE THUNDERSTORMS CONTINUED TO
WEAKEN AS THEY MOVED EAST AROUND 25 MILES AN HOUR.

THESE THUNDERSTORMS MAY STILL PRODUCE BRIEF HEAVY RAIN AND DANGEROUS
LIGHTNING BEFORE MOVING INTO THE NEBRASKA PANHANDLE BY 515 PM MDT.

PEOPLE IN SOUTHERN NIOBRARA...GOSHEN...AND EASTERN LARAMIE COUNTIES
ARE REMINDED THAT A SEVERE THUNDERSTORM WATCH REMIANS IN EFFECT UNTIL
900 PM MDT THIS EVENING.  THIS MEANS THAT CONDITIONS ARE STILL FAVORABLE
FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS.
<
DJV
Special weather statement, Jul 11, 5:22 PM MDT, 28 minutes before
WYZ068>073-120000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
520 PM MDT SAT JUL 11 1992

...A SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 9 PM FOR GOSHEN COUNTY
AND EASTERN LARAMIE COUNTY OF SOUTHEAST WYOMING...

THE INITIAL BATCH OF THUNDERSTORMS THAT FORMED OVER SOUTHEAST WYOMING
EARLIER THIS AFTERNOON HAS MOVED EAST INTO NEBRASKA.  HOWEVER...ANOTHER
BAND OF THUNDERSTORMS WAS MOVING INTO SOUTHEAST WYOMING AT 515 PM.

THE STORMS EXTENDED ACROSS MOST OF PLATTE COUNTY SOUTHWARD INTO THE
WESTERN PART OF LARAMIE COUNTY.  THE STRONGEST STORM WAS LOCATED 25
MILES SOUTH OF WHEATLAND...OR ABOUT 10 MILES SOUTHWEST OF CHUGWATER.
THE STORMS WERE MOVING EAST AT 25 MILES AN HOUR.

PEOPLE IN SOUTHEAST WYOMING SHOULD REMAIN ALERT TO THUNDERSTORMS THIS
REST OF THIS EVENING.  THESE STORMS COULD BECOME MUCH STRONGER AS THEY
MOVE EAST INTO THE WATCH AREA.  IF THREATENING STORMS APPROACH YOUR
AREA...GO TO A SAFE PLACE SUCH AS INSIDE A STURDY BUILDING AND WAIT
FOR THEM TO PASS.

JAD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 6:15 PM MDTSevere Thunderstorm WarningCYSSioux30 min
Jul 10, 6:24 PM MDTSevere Thunderstorm WarningCYSBanner, Kimball36 min
Jul 10, 6:37 PM MDTSevere Thunderstorm WarningCYSScotts Bluff38 min
Jul 10, 6:46 PM MDTSevere Thunderstorm WarningCYSScotts Bluff, Sioux29 min
Jul 10, 7:15 PM MDTSevere Thunderstorm WarningCYSScotts Bluff30 min
Jul 10, 7:47 PM MDTSevere Thunderstorm WarningCYSBanner, Morrill, Scotts Bluff28 min
Jul 10, 8:15 PM MDTSevere Thunderstorm WarningCYSBanner, Morrill30 min
Jul 10, 9:18 PM MDTSevere Thunderstorm WarningCYSCheyenne, Morrill27 min
Jul 11, 2:35 PM MDTSevere Thunderstorm WarningCYSSioux25 min
Jul 11, 2:58 PM MDTSevere Thunderstorm WarningCYSKimball32 min
Jul 11, 3:29 PM MDTSevere Thunderstorm WarningCYSKimball31 min
Jul 11, 3:44 PM MDTSevere Thunderstorm WarningCYSBox Butte31 min
Jul 11, 3:53 PM MDTSevere Thunderstorm WarningCYSKimball22 min
Jul 11, 4:03 PM MDTSevere Thunderstorm WarningCYSDawes27 min
Jul 11, 4:36 PM MDTTornado WarningCYSBox Butte39 min
Jul 11, 4:39 PM MDTSevere Thunderstorm WarningCYSDawes23 min
Jul 11, 5:16 PM MDTSevere Thunderstorm WarningCYSBox Butte29 min

Nearby

Tornado Warnings in Nebraska, 1992Every tornado warning in 1992Tornadoes in 1992

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.