Alert archive / Nebraska / Tornado Warnings in 1991
Tornado Warning 37, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jun 29, 1991, 12:02 AM MDT for Sheridan County, Nebraska. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1991, 12:02 AM MDT (06:02 UTC)
- Expired
- Jun 29, 1991, 12:30 AM MDT
- In force
- 28 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Sheridan County, NE
The nearest sounding before it
Rapid City, SD (KRAP), launched 00:00Z, 6.0 hours before the alert went out and 178 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3151 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBFF 290602
TORBFF
NEC161-290630-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
1202 AM MDT SAT JUN 29 1991
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 1230 AM MDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE PANHANDLE OF NEBRASKA
NORTHERN SHERIDAN
AT 1159 PM MDT...RADAR INDICATED A TORNADO 17 MILES SOUTHEAST OF
CHADRON OR 15 MILES WEST OF RUSHVILLE. THE POSSIBLE TORNADO WAS
MOVING EAST AT 15 MPH AND SHOULD PASS VERY NEAR HAY SPRINGS.
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.
THE TORNADO WARNING FOR EASTERN DAWES COUNTY WAS ALLOWED TO EXPIRE
AT 1200 AM MDT.
PEEKWhat 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, Jun 28, 9:29 PM MDT, 2 hours 33 minutes before
NEZ002-290430- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE VALENTINE NE ISSUED BY SCOTTSBLUFF NE 929 PM MDT FRI JUN 28 1991 ...A STRONG THUNDERSTORM IN SOUTH CHERRY COUNTY... AT 927 PM MDT...RADAR INDICATED A STRONG THUNDERSTORM 20 MILES NORTH OF MULLEN OR 40 MILES SOUTHWEST OF VALENTINE. THE STORM WAS MOVING NORTHEAST AT 25 MPH. BRIEF HEAVY RAIN...STRONG GUSTY WIND...HAIL AND DEADLY LIGHTNING ARE POSSIBLE WITH THIS STORM IN CHERRY CEOUNTY UNTIL 1030 PM MDT. PEEK
Special weather statement, Jun 28, 9:35 PM MDT, 2 hours 27 minutes before
WYZ012-016-017-290415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 935 PM MDT FRI JUN 28 1991 A SMALL LINE OF THUNDERSTORMS EXTENDED FROM NEAR LARAMIE WYOMING TO 35 MILES NORTH OF CHEYENNE AT 930 PM MDT. THE STRONGEST STORM IN THE LINE WAS ABOUT 25 MILES NORTHWEST OF CHEYENNE. BRIEF HEAVY RAIN AND SMALL HAIL WERE LIKELY ACCOMPANYING THIS THUNDERSTORM. THE THUNDERSTORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR. WITH [THE LOSS OF HEATING FROM THE SUN...THE THUNDERSTORMS IN THE SOUTHEAST CORNER OF WYOMING SHOULD WEAKEN AND END BY 1100 PM. HATTEN
Special weather statement, Jun 28, 9:40 PM MDT, 2 hours 22 minutes before
NEZ001-005-011-290440- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 940 PM MDT FRI JUN 28 1991 ...STRONG THUNDERSTORM IN THE NORTH NEBRASKA PANHANDLE... AT 938 PM MDT...RADAR INDICATED A STRONG THUNDERSTORM 25 MILES SOUTH OF HARRISON OR 30 MILES NORTH OF SCOTTSBLUFF. MOVEMENT WAS TO THE NORTHEAST AT 25 MPH. BRIEF HEAVY RAIN...STRONG GUSTY WIND...AND DEADLY LIGHTNING ARE POSSIBLE WITH THIS STORM IN CENTRAL SIOUX COUNTY UNPTIL 1040 PM MDT. PEEK
Special weather statement, Jun 28, 11:15 PM MDT, 47 minutes before
WYZ012-017-290600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1115 PM MDT FRI JUN 28 1991 A FEW STRONG THUNDERSTORMS WERE STILL RUMBLING OVER EXTREME SOUTHEAST WYOMING AT 1110 PM. THE STRONGEST OF THESE WAS ABOUT 20 MILES NORTH OF TORRINGTON...MOVING NORTHEAST AT 20 MILES AN HOUR. HEAVY RAIN... HAIL AND DEADLY LIGHTNING WERE LIKELY WITH THIS THUNDERSTORM. TWO OTHER THUNDERSTORMS...THAT WERE 20 AND 35 MILES NORTHEAST OF CHEYENNE RESPECTIVELY...HAD WEAKENED EVEN MORE SINCE 1100 PM. THESE TWO STORMS WERE MOVING MORE TO THE EAST AROUND 15 MILES AN HOUR. PEOPLE IN EXTREME SOUTHEAST WYOMING SHOULD REMAIN ALERT FOR THUNDERSTORMS UNTIL AROUND MIDNIGHT. SHOULD A STORM APPROACH YOUR AREA...SEEK A SAFE PLACE IMMEDIATELY...AND INDOORS IF POSSIBLE. HATTEN
Special weather statement, Jun 28, 11:55 PM MDT, 7 minutes before
WYZ012-290630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1155 PM MDT FRI JUN 28 1991 THE ONLY STRONG THUNDERSTORM STILL LEFT IN EXTREME SOUTHEAST WYOMING WAS ABOUT 30 MILES NORTH OF TORRINGTON AT 1150 PM. THE STORM WAS ON THE NEBRASKA STATE LINE MOVING NORTHEAST AT 20 MILES AN HOUR. THE STORM WILL BE IN NEBRASKA JUST AFTER MIDNIGHT. ALL OF THE OTHER THUNDERSTORMS IN EXTREME SOUTHEAST WYOMING HAD DISSIPATED. HATTEN
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 10:33 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 42 min |
| Jun 28, 11:16 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 59 min |
| Jun 28, 11:28 PM MDT | Tornado Warning | CYS | Dawes | 32 min |
| Jun 29, 12:30 AM MDT | Severe Thunderstorm Warning | CYS | Sioux | 23 min |
| Jun 29, 12:36 AM MDT | Severe Thunderstorm Warning | CYS | Sheridan | 17 min |
Nearby
Tornado Warnings in Nebraska, 1991Every tornado warning in 1991Tornadoes in 1991
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.