Alert archive / Nebraska / Tornado Warnings in 1992

Tornado Warning 14, NWS Cheyenne, WY

July 11, 1992Box Butte County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jul 11, 1992, 4:36 PM MDT for Box Butte County, Nebraska. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1992, 4:36 PM MDT (22:36 UTC)
Expired
Jul 11, 1992, 5:15 PM MDT
In force
39 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Box Butte County, NE

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 10.6 hours before the alert went out and 206 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 1992-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 1992-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
1 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KBFF 112236
TORBFF
NEC013-112315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
436 PM MDT SAT JUL 11 1992

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 515 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE PANHANDLE OF NEBRASKA
      BOX BUTTE...THE CITY OF ALLIANCE

AT 435 PM MDT...A POSSIBLE TORNADO WAS INDICATED BY RADAR 15 MILES
WEST OF ALLIANCE...ALONG THE BOX BUTTE/MORRILL COUNTY LINE.  THE
STORM WAS MOVING NORTHEAST AT 20 MPH.

IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...TAKE SHELTER IN A CULVERT...DITCH OR
LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

GIVE REPORTS OF SEVERE WEATHER OR DAMAGE TO A LAW ENFORCEMENT AGENCY
FOR RELAY TO THE NATIONAL WEATHER SERVICE.

TAKE COVER NOW.

PFEIFFER

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, 11:22 AM MDT, 5 hours 14 minutes before
WYZ025-029>034-063-112030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1120 AM MDT SAT JUL 11 1992

...STRONG THUNDERSTORMS HAVE DEVELOPED IN THE SOUTHWEST CORNER OF
WYOMING...

AT 11AM MDT RADAR AND LIGHTNING DETECTION EQUIPMENT SHOWED A LARGE
CLUSTER OF THUNDERSTORMS IN THE SOUTHWEST CORNER OF WYOMING.  THE
STRONGEST STORM WAS 25 MILES EAST OF EVANSTON WITH A COUPLE OTHER
STRONG STORMS 55 MILES NORTHEAST AND 55 MILES EAST OF EVANSTON.

OTHER THUNDERSTORMS WERE ALONG THE SWEETWATER/CARBON COUNTY BORDER JUST
WEST OF RAWLINS.

THE STORMS WERE MOVING EAST AT 20 MILES AN HOUR.

SMALL HAIL...STRONG GUSTY WINDS...BRIEF HEAVY RAIN AS WELL AS DEADLY
LIGHTNING SHOULD BE EXPECTED WITH THE STRONGEST STORMS.  BOATERS AND
OTHER PEOPLE OUTDOORS SHOULD BE PREPARED TO MOVE TO SAFETY IF A
THREATENING STORM APPROACHES.
COX
Special weather statement, Jul 11, 12:28 PM MDT, 4 hours 8 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, 3 hours 19 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, 2 hours 23 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, 1 hour 22 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, 6 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

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, 4:39 PM MDTSevere Thunderstorm WarningCYSDawes23 min
Jul 11, 5:16 PM MDTSevere Thunderstorm WarningCYSBox Butte29 min
Jul 11, 5:50 PM MDTTornado WarningCYSCheyenne25 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.