Alert archive / Nebraska / Tornado Warnings in 2011
Tornado Warning 30, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jul 16, 2011, 9:58 PM MDT for Kimball County, Nebraska. It was in force for 37 min. 1 report 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
- Jul 16, 2011, 9:58 PM MDT (03:58 UTC)
- Expired
- Jul 16, 2011, 10:35 PM MDT
- In force
- 37 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
County Kimball County, NE
The radar
The Cheyenne radar (KCYS), 70 km from the middle of the area, began a volume at 04:01 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 |
|---|---|---|---|
| Jul 16, 10:27 PM MDT | HAIL 1.75 | Oliver Reservoir, NE | GOLF BALL SIZED HAIL WAS ACCOMPANIED BY TORRENTIAL RAIN. |
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, 4.0 hours before the alert went out and 153 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
- 1193 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 2264 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.8
The text
As transmitted, in the capitals the NWS used until 2016.
867
WFUS55 KCYS 170358
TORCYS
NEC105-170445-
/O.NEW.KCYS.TO.W.0030.110717T0358Z-110717T0445Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
958 PM MDT SAT JUL 16 2011
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* TORNADO WARNING FOR...
WESTERN KIMBALL COUNTY IN THE PANHANDLE OF NEBRASKA...
* UNTIL 1045 PM MDT
* AT 957 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR PANORAMA POINT...OR 22 MILES SOUTHWEST OF
KIMBALL...AND MOVING NORTH AT 30 MPH.
* LOCATIONS IMPACTED INCLUDE...
PANORAMA POINT...OLIVER RESERVOIR...I-80 EXIT 8 AND BUSHNELL.
THIS INCLUDES INTERSTATE 80 IN NEBRASKA BETWEEN MILE MARKERS 1 AND
13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
&&
LAT...LON 4100 10405 4118 10406 4129 10405 4131 10379
4099 10380
TIME...MOT...LOC 0358Z 178DEG 27KT 4100 10394
$$
COX2 follow-up statements
822
WWUS55 KCYS 170418
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1018 PM MDT SAT JUL 16 2011
NEC105-170445-
/O.CON.KCYS.TO.W.0030.000000T0000Z-110717T0445Z/
KIMBALL NE-
1018 PM MDT SAT JUL 16 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN KIMBALL COUNTY
UNTIL 1045 PM MDT...
AT 1013 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 8 MILES NORTHEAST OF PANORAMA POINT...OR 17 MILES
SOUTHWEST OF KIMBALL...MOVING NORTH AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
OLIVER RESERVOIR...I-80 EXIT 8 AND BUSHNELL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
&&
LAT...LON 4100 10405 4118 10406 4129 10405 4131 10379
4099 10380
TIME...MOT...LOC 0418Z 178DEG 27KT 4113 10393
$$
COX146
WWUS55 KCYS 170435
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1035 PM MDT SAT JUL 16 2011
NEC105-170443-
/O.CAN.KCYS.TO.W.0030.000000T0000Z-110717T0445Z/
KIMBALL NE-
1035 PM MDT SAT JUL 16 2011
...THE TORNADO WARNING FOR WESTERN KIMBALL COUNTY IS CANCELLED...
THE STORM WHICH HAD A STRONG CIRCULATION HAS NOW WEAKENED OVER THE
AREA. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR
KIMBALL...LARAMIE AND BANNER COUNTIES UNTIL 11 PM.
LAT...LON 4100 10405 4118 10406 4129 10405 4131 10379
4099 10380
TIME...MOT...LOC 0433Z 178DEG 27KT 4124 10394
$$
COXThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 9:53 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball | 58 min |
| Jul 16, 10:15 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 35 min |
| Jul 16, 10:54 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Morrill, Scotts Bluff | 66 min |
| Jul 16, 11:27 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill | 48 min |
| Jul 16, 11:30 PM MDT | Flash Flood Warning | CYS | Banner, Morrill, Scotts Bluff | 2 hr |
| Jul 16, 11:48 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes | 42 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.