Alert archive / Wyoming / Tornado Warnings in 1991
Tornado Warning 19, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jun 6, 1991, 6:21 PM MDT for Albany County, Wyoming. It was in force for 39 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 6, 1991, 6:21 PM MDT (00:21 UTC)
- Expired
- Jun 6, 1991, 7:00 PM MDT
- In force
- 39 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Albany County, WY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 6, 7:10 PM MDT | Tornado F0 | Albany, WY |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Lander/Hunt Fiel, WY (KLND), launched 00:00Z, 0.4 hours before the alert went out and 277 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
- 0 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 21 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 KCYS 070023 TORCYS WYC001-070100- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 621 PM MDT THU JUN 6 1991 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST WYOMING ...SOUTHEASTERN ALBANY COUNTY AT 620 A TORNADO WAS REPORTED 2 MILES NORTHWEST OF LARAMIE MOVING NORTHEAST AROUND 20 MILES AN HOUR. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CXUSHIONS TO COVER YOUR BODY. AVOID WINDOWS. CGB
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, Jun 6, 1:06 PM MDT, 5 hours 15 minutes before
NEZ001-005-011-061945- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 105 PM MDT THU JUN 6 1991 ...STRONG THUNDERSTORMS IN THE NEBRASKA PANHANDLE... AT 103 PM MDT...RADAR INDICATED STRONG THUNDERSTORMS FROM 15 MILES NORTHEAST OF ALLIANCE TO 12 MILES EAST OF CHADRON. OTHER STRONG STORMS WERE 42 MILES EAST OF SIDNEY. THE STORMS WERE MOVING NORTH AT 30 MPH. BRIEF HEAVY RAIN...STRONG GUSTY WIND AND DEADLY LIGHTNING ARE POSSIBLE WITH THESE STORMS IN WESTERN SHERIDAN...NORTHEAST BOX BUTTE...SOUTHERN GARDEN AND DEUEL COUNTIES UNTIL 145 PM MDT. PEEK
Special weather statement, Jun 6, 1:51 PM MDT, 4 hours 30 minutes before
NEZ001-005-011-062045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 151 PM MDT THU JUN 6 1991 ...CONTINUING THUNDERSTORMS IN THE NEBRASKA PANHANDLE... AT 148 PM MDT...RADAR INDICATED STRONG THUNDERSTORMS FROM 35 MILES EAST OF SIDNEY TO 35 MILES SOUTHEAST OF ALLIANCE. OTHER STRONG STORMS WERE 15 MILES NORTHEAST OF SCOTTSBLUFF...30 MILES NORTH OF ALLIANCE AND 30 MILES EAST OF CHADRON. ALL STORMS WERE MOVING TO THE NORTH AT 30 MPH. BRIEF HEAVY RAIN...STRONG GUSTY WIND AND DEADLY LIGHTNING ARE POSSIBLE WITH THESE STORMS IN GARDEN...SOUTHWEST BOX BUTTE...DAWES AND NORTHERN SHERIDAN COUNTIES UNTIL 245 PM MDT. PEEK
Special weather statement, Jun 6, 2:52 PM MDT, 3 hours 29 minutes before
NEZ001-005-011-062145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 252 PM MDT THU JUN 6 1991 ...STRONG THUNDERSTORMS IN THE NORTH NEBRASKA PANHANDLE... AT 250 PM MDT...RADAR INDICATED STRONG THUNDERSTORMS 10 MILES SOUTHEAST AND 17 MILES SOUTHWEST OF CHADRON. OTHER STORMS WERE 20 MILES NORTHEAST OF ALLIANCE. THE STORMS WERE MOVING NORTH AT 30 MPH. BRIEF HEAVY RAIN...STRONG GUSTY WIND AND DEADLY LIGHTNING ARE POSSIBLE WITH THUNDERSTORMS IN SOUTHERN SIOUX...DAWES AND THE SOUTHERN HALF OF SHERIDAN COUNTY UNTIL 345 PM MDT. PEEK
Special weather statement, Jun 6, 5:51 PM MDT, 30 minutes before
WYZ012-017-070100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 550 PM MDT THU JUN 6 1991 ...A FLASH FLOOD WATCH IS IN EFFECT FOR EASTERN WYOMING TONIGHT... SHOWERS AND THUNDERSTORMS HAVE DEVELOPED IN SOUTHEAST WYOMING AGAIN THIS AFTERNOON. THE STRONGEST WERE IN SOUTHEAST LARAMIE COUNTY... MOVING NORTH AROUND 25 MILES AN HOUR. LOCAL BRIEF HEAVY RAIN...DANGEROUS LIGHTNING...GUSTY WINDS...AND HAIL ARE POSSIBLE WITH THESE STORMS. IN ADDITION...A FLASH FLOOD WATCH REMAINS IN EFFECT TONIGHT FOR EASTERN WYOMING. PEOPLE IN THIS PART OF THE STATE ARE ADVISED TO BE ON THE ALERT FOR ADVERSE WEATHER...AND FOR HIGH WATER CONDITIONS. IF THREATENING WEATHER APPROACHES...TAKE' SHELTER IN DOORS IF AT ALL POSSIBLE. IN THE EVENT OF FLOODING CONDITIONS...MOVE TO HIGHER GROUND. DO NOT ATTEMPT TO DRIVE THROUGH FLOODED...LOW LYING AREAS. CG
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 8:53 PM MDT | Flash Flood Warning | CYS | Platte | 3 hr |
| Jun 7, 2:25 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 35 min |
Nearby
Tornado Warnings in Wyoming, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.