Alert archive / Nebraska / Tornado Warnings in 1992
Tornado Warning 16, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jul 21, 1992, 3:27 PM MDT for Sioux County, Nebraska. It was in force for 33 min.
The area
The counties it named.
The facts
- Issued
- Jul 21, 1992, 3:27 PM MDT (21:27 UTC)
- Expired
- Jul 21, 1992, 4:00 PM MDT
- In force
- 33 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Sioux County, NE
The nearest sounding before it
Rapid City, SD (KRAP), launched 12:00Z, 9.5 hours before the alert went out and 190 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
- 576 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 184 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 212127
TORBFF
NEC165-212200-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
327 PM MDT TUE JUL 21 1992
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 400 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE PANHANDLE OF NEBRASKA
SOUTHERN SIOUX
AT 327 PM MDT RADAR INDICATED A POSSIBLE TORNADO 30 MILES
NORTHWEST OF SCOTTSBLUFF IN SOUTHERN SIOUX COUNTY. THE STORM WAS
MOVING TO THE SOUTHEAST AT 30 TO 35 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.
THIS REPLACES THE SEVERE THUNDERSTORM WARNING ISSUED FOR SIOUX WAS
TO EXPIRE AT 345 PM MDT.
SALMONSWhat 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 21, 10:18 AM MDT, 5 hours 9 minutes before
WYZ052>055-058-060>062-068>073-211830- SPECIAL WEATHER STATEMENT FOR SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1020 AM MDT TUE JUL 21 1992 ...THUNDERSTORMS EXPECTED TO BECOME NASTY IN THE EASTERN PLAINS OF WYOMING THIS AFTERNOON... SOME THUNDERSTORMS MAY BECOME SEVERE OVER THE EAST PLAINS THIS AFTERNOON AS A STRONG UPPER LEVEL DISTURBANCE CONTINUES EAST THROUGH THE STATE. THIS UPPER LEVEL DISTURBANCE HAS ALREADY FIRED UP THUNDERSTORMS OVER THE WESTERN MOUNTAINS THIS MORNING WITH STORMS SPREADING INTO THE CENTRAL BASINS BY 10 AM. THE AREA OF GREATEST RISK WILL BE EAST OF THE LARAMIE MOUNTAINS TO THE NEBRASKA BORDER...AND NORTHEAST TOWARDS THE SOUTH END OF THE BLACK BLACK HILLS. THE RISK OF SEVERE WEATHER WILL DIMINISH QUICKLY FARTHER NORTH AND WEST. < PEOPLE IN WYOMING/S EASTERN PLAINS SHOULD KEEP ABREAST OF THE LATEST WEATHER DEVELOPMENTS THIS AFTERNOON. BE PREPARED TO MOVE TO SAFETY IF THE NEED ARISES.| PAL
Special weather statement, Jul 21, 1:30 PM MDT, 1 hour 57 minutes before
WYZ053-058>062-066>073-212030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 130 PM MDT TUE JUL 21 1992 ...A TORNADO WATCH HAS BEEN ISSUED FOR EAST CENTRAL AND SOUTHEAST WYOMING AND IS IN EFFECT UNTIL 900 PM THIS EVENING... THUNDERSTORMS HAVE BEGUN DEVELOPING IN EAST CENTRAL AND SOUTHEAST WYOMING EARLY THIS AFTERNOON...AND HAVE ALREADY PRODUCED MARBLE SIZED HAIL AT DOUGLAS. THESE THUNDERSTORMS ARE EXPECTED TO STRENGTHEN THROUGH THE AFTERNOON HOURS. THE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING HEAVY RAIN...LARGE HAIL...DAMAGING WINDS...AND DEADLY LIGHTNING. THESE THUNDERSTORMS CAN AND OFTEN DO PRODUCE TORNADOES. THERFORE...A TORNADO WATCH HAS BEEN ISSUED FOR EAST CENTRAL AND SOUTHEAST WYOMING. THIS WATCH IS IN EFFECT UNTIL 900 PM THIS EVENING. THE FOLLOWING COUNTIES ARE INCLUDED IN THE TORNADO WATCH...WESTON... CONVERSE...NIOBRARA...ALBANY...PLATTE...GOSHEN...LARAMIE AND SOUTHERN CAMPBELL. THIS ALSO INCLUDES THE FOLLOWING TOWNS AND CITIES...NEWCASTLE...DOUGLAS ...LUSK...LARAMIE...WHEATLAND...TORRINGTON...CHEYENNE...AND WRIGHT. PEOPLE IN EAST CENTRAL AND SOUTHEAST WYOMING SHOULD KEEP ABREAST OF THE LATEST WEATHER DEVELOPMENTS. STAY TUNED TO NOAAv WEATHER RADIO OR THE LOCAL MEDIA FOR ADDITIONAL STATEMENTS. IF A THUNDERSTORM APPROACHES... BE PREPARED TO MOVE TO SAFETY QUICKLY. DJV
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 3:10 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 35 min |
| Jul 21, 3:55 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff, Sioux | 35 min |
| Jul 21, 4:19 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Scotts Bluff | 26 min |
| Jul 21, 4:36 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill | 39 min |
| Jul 21, 5:21 PM MDT | Severe Thunderstorm Warning | CYS | Garden | 39 min |
| Jul 21, 5:43 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 32 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.