Alert archive / Nebraska / Tornado Warnings in 2011
Tornado Warning 19, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jul 2, 2011, 6:56 PM MDT for Sioux County, Nebraska; Goshen County, Wyoming. It was in force for 49 min. 9 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
- Jul 2, 2011, 6:56 PM MDT (00:56 UTC)
- Expired
- Jul 2, 2011, 7:45 PM MDT
- In force
- 49 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
Counties Sioux County, NE, Goshen County, WY
The radar
The Cheyenne radar (KCYS), 123 km from the middle of the area, began a volume at 01:00 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 2, 7:00 PM MDT | TORNADO | Lingle, WY | TORNADO PICKED UP DUMPSTER IN PARK NEAR LINGLE |
| Jul 2, 7:05 PM MDT | HAIL 0.88 | Torrington, WY | DIME TO NICKEL SIZED HAIL |
| Jul 2, 7:09 PM MDT | HAIL 1.75 | Torrington, WY | NEAR PORT OF ENTRY AREA |
| Jul 2, 7:17 PM MDT | HAIL 2 | Torrington, WY | |
| Jul 2, 7:18 PM MDT | HAIL 1 | Torrington, WY | |
| Jul 2, 7:18 PM MDT | TORNADO | 2 S Torrington, WY | |
| Jul 2, 7:20 PM MDT | HAIL 1 | Torrington, WY | |
| Jul 2, 7:21 PM MDT | TSTM WND GST 70 | Torrington, WY | |
| Jul 2, 7:29 PM MDT | HAIL 1.25 | 1 S Torrington, WY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 2, 2:13 PM MDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 0.9 hours before the alert went out and 238 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
- 1797 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1368 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.8
The text
As transmitted, in the capitals the NWS used until 2016.
325 WFUS55 KCYS 030056 TORCYS NEC165-WYC015-030145- /O.NEW.KCYS.TO.W.0019.110703T0056Z-110703T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 656 PM MDT SAT JUL 2 2011 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * TORNADO WARNING FOR... EXTREME SOUTHWESTERN SIOUX COUNTY IN THE PANHANDLE OF NEBRASKA... CENTRAL GOSHEN COUNTY IN SOUTHEAST WYOMING... * UNTIL 745 PM MDT * AT 647 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 7 MILES NORTHEAST OF FORT LARAMIE. DOPPLER RADAR SHOWED THIS TORNADO MOVING SOUTHEAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... TORRINGTON AND LINGLE. 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 4216 10396 4196 10422 4221 10446 4229 10435 TIME...MOT...LOC 0054Z 312DEG 20KT 4221 10436 $$ MAZUR
2 follow-up statements
012 WWUS55 KCYS 030132 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 732 PM MDT SAT JUL 2 2011 NEC165-WYC015-030145- /O.CON.KCYS.TO.W.0019.000000T0000Z-110703T0145Z/ GOSHEN WY-SIOUX NE- 732 PM MDT SAT JUL 2 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME SOUTHWESTERN SIOUX AND EAST CENTRAL GOSHEN COUNTIES UNTIL 745 PM MDT... AT 727 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR TORRINGTON...MOVING SOUTHEAST AT 25 MPH. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EASTERN GOSHEN AND EXTREME SOUTHWESTERN SIOUX COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4216 10396 4203 10413 4212 10424 4220 10415 TIME...MOT...LOC 0132Z 312DEG 20KT 4207 10415 $$
117 WWUS55 KCYS 030143 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 743 PM MDT SAT JUL 2 2011 NEC165-WYC015-030153- /O.EXP.KCYS.TO.W.0019.000000T0000Z-110703T0145Z/ GOSHEN WY-SIOUX NE- 743 PM MDT SAT JUL 2 2011 ...THE TORNADO WARNING FOR EXTREME SOUTHWESTERN SIOUX AND EAST CENTRAL GOSHEN COUNTIES WILL EXPIRE AT 745 PM MDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4216 10396 4203 10413 4212 10424 4220 10415 TIME...MOT...LOC 0143Z 312DEG 20KT 4203 10409 $$
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 6:44 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 61 min |
| Jul 2, 7:23 PM MDT | Tornado Warning | CYS | Banner, Scotts Bluff, Sioux | 37 min |
| Jul 2, 7:41 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill, Scotts Bluff, Sioux | 49 min |
| Jul 2, 7:54 PM MDT | Tornado Warning | CYS | Banner, Scotts Bluff | 40 min |
| Jul 2, 8:25 PM MDT | Flash Flood Warning | CYS | Banner, Scotts Bluff | 6 hr |
| Jul 2, 8:30 PM MDT | Tornado Warning | CYS | Banner, Kimball, Scotts Bluff | 45 min |
| Jul 2, 9:11 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Cheyenne, Kimball, Morrill, Scotts Bluff | 49 min |
| Jul 3, 1:55 AM MDT | Areal Flood Warning | CYS | Banner, Scotts Bluff | 7 hr |
| Jul 2, 6:04 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 41 min |
| Jul 2, 6:22 PM MDT | Tornado Warning | CYS | Goshen | 37 min |
Nearby
Tornado Warnings in Nebraska, 2011Tornado Warnings in Wyoming, 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.