Alert archive / Nebraska / Tornado Warnings in 2011
Tornado Warning 12, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jun 25, 2011, 7:24 PM MDT for Cheyenne County, Nebraska. It was in force for 36 min. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 25, 2011, 7:24 PM MDT (01:24 UTC)
- Expired
- Jun 25, 2011, 8:00 PM MDT
- In force
- 36 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
County Cheyenne County, NE
The radar
The Cheyenne radar (KCYS), 126 km from the middle of the area, began a volume at 01:27 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 25, 7:25 PM MDT | TSTM WND DMG | 3 W Potter, NE | SEMI BLOWN OVER ON INTERSTATE 80 JUST INSIDE CHEYENNE COUNTY LINE. |
| Jun 25, 7:25 PM MDT | TORNADO | 3 W Potter, NE | SEMI BLOWN OVER ON INTERSTATE 80 JUST INSIDE CHEYENNE COUNTY LINE. DAMAGE CAUSED BY APPARENT TORNADO. |
| Jun 25, 7:28 PM MDT | TORNADO | 3 W Potter, NE | TWO ROPE TORNADOES. |
| Jun 25, 7:30 PM MDT | TSTM WND DMG | Potter, NE | TWO LARGE TREES DOWN IN POTTER DUE TO STRONG WINDS. |
| Jun 25, 7:44 PM MDT | HAIL 0.5 | 4 E Potter, NE | ALSO HEAVY RAIN AND GUSTY WIND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.4 hours before the alert went out and 154 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
- 395 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 3421 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
342
WFUS55 KCYS 260124
TORCYS
NEC033-260200-
/O.NEW.KCYS.TO.W.0012.110626T0124Z-110626T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
724 PM MDT SAT JUN 25 2011
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* TORNADO WARNING FOR...
WEST CENTRAL CHEYENNE COUNTY IN THE PANHANDLE OF NEBRASKA...
* UNTIL 800 PM MDT
* AT 718 PM MDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO NEAR
POTTER...OR 16 MILES EAST OF KIMBALL. DOPPLER RADAR SHOWED THIS
TORNADO MOVING EAST SOUTHEAST AT 15 MPH.
* LOCATIONS IMPACTED INCLUDE...
POTTER AND I-80 EXIT 38.
THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 36 AND
46.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4121 10338 4132 10338 4135 10337 4130 10311
4113 10321
TIME...MOT...LOC 0123Z 292DEG 13KT 4127 10333
$$
RE2 follow-up statements
443
WWUS55 KCYS 260140
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
740 PM MDT SAT JUN 25 2011
NEC033-260200-
/O.CON.KCYS.TO.W.0012.000000T0000Z-110626T0200Z/
CHEYENNE NE-
740 PM MDT SAT JUN 25 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL CHEYENNE
COUNTY UNTIL 800 PM MDT...
AT 736 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR POTTER...OR 17 MILES NORTHWEST OF
SIDNEY...MOVING EAST SOUTHEAST AT 15 MPH.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF WESTERN CHEYENNE COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4121 10338 4132 10338 4135 10337 4130 10311
4113 10321
TIME...MOT...LOC 0140Z 292DEG 13KT 4124 10325
$$
RE284
WWUS55 KCYS 260152
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
752 PM MDT SAT JUN 25 2011
NEC033-260201-
/O.EXP.KCYS.TO.W.0012.000000T0000Z-110626T0200Z/
CHEYENNE NE-
752 PM MDT SAT JUN 25 2011
...THE TORNADO WARNING FOR WEST CENTRAL CHEYENNE COUNTY WILL EXPIRE
AT 800 PM MDT...
THE STORM WHICH PROMPTED THE WARNING IS MOVING OUT OF THE WARNED
AREA. A TORNADO WARNING IS IN EFFECT FOR CENTRAL CHEYENNE COUNTY
UNTIL 815 PM.
LAT...LON 4121 10338 4132 10338 4135 10337 4130 10311
4113 10321
TIME...MOT...LOC 0151Z 292DEG 13KT 4122 10320
$$
REThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 6:45 PM MDT | Tornado Warning | CYS | Banner, Kimball | 30 min |
| Jun 25, 7:11 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 23 min |
| Jun 25, 7:12 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Sioux | 46 min |
| Jun 25, 7:47 PM MDT | Tornado Warning | CYS | Cheyenne | 28 min |
| Jun 25, 7:55 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Scotts Bluff, Sioux | 48 min |
| Jun 25, 8:13 PM MDT | Tornado Warning | CYS | Cheyenne | 32 min |
| Jun 25, 8:43 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 47 min |
| Jun 26, 9:02 AM MDT | Severe Thunderstorm Warning | CYS | Dawes | 40 min |
| Jun 26, 4:39 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 35 min |
Nearby
Tornado Warnings in Nebraska, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.