Alert archive / Nebraska / Tornado Warnings in 2013
Tornado Warning 18, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jun 21, 2013, 3:56 PM MDT for Cheyenne County, Nebraska. It was in force for 49 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
- Jun 21, 2013, 3:56 PM MDT (21:56 UTC)
- Expired
- Jun 21, 2013, 4:45 PM MDT
- In force
- 49 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.5 in
County Cheyenne County, NE
The radar
The Cheyenne radar (KCYS), 163 km from the middle of the area, began a volume at 21:57 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 21, 4:01 PM MDT | TORNADO | 5 N Sidney, NE |
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 |
|---|---|---|---|
| Jun 21, 1:48 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.9 hours before the alert went out and 162 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
- 455 J/kg
- Mixed-layer CIN
- -353 J/kg
- Mixed-layer LCL
- 1951 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
003
WFUS55 KCYS 212156
TORCYS
NEC033-212245-
/O.NEW.KCYS.TO.W.0018.130621T2156Z-130621T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
356 PM MDT FRI JUN 21 2013
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* TORNADO WARNING FOR...
EASTERN CHEYENNE COUNTY IN THE PANHANDLE OF NEBRASKA...
* UNTIL 445 PM MDT
* AT 353 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 6 MILES NORTH OF SIDNEY...AND MOVING EAST AT 20
MPH.
HAZARD...TORNADO AND PING PONG BALL SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS
WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS
LIKELY.
* LOCATIONS IMPACTED INCLUDE...
GURLEY.
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 4144 10280 4126 10263 4110 10300 4127 10308
TIME...MOT...LOC 2155Z 250DEG 17KT 4122 10293
TORNADO...RADAR INDICATED
HAIL...1.50IN
$$
FINCH2 follow-up statements
353
WWUS55 KCYS 212208
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
408 PM MDT FRI JUN 21 2013
NEC033-212245-
/O.CON.KCYS.TO.W.0018.000000T0000Z-130621T2245Z/
CHEYENNE NE-
408 PM MDT FRI JUN 21 2013
...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN CHEYENNE COUNTY
UNTIL 445 PM MDT...
AT 402 PM MDT...A CONFIRMED TORNADO WAS LOCATED 6 MILES NORTH OF
COLTON...AND MOVING EAST AT 20 MPH.
HAZARD...DAMAGING TORNADO AND PING PONG BALL SIZE HAIL.
SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO. A TORNADO WAS REPORTED
5 MILES TO THE NORTH OF SIDNEY AT 400 PM.
IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL
BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF EASTERN CHEYENNE COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
THIS STORM HAS A HISTORY OF PRODUCING TORNADOES. TAKE COVER IN A
BASEMENT OR STORM SHELTER NOW!
&&
LAT...LON 4144 10280 4126 10263 4110 10300 4127 10308
TIME...MOT...LOC 2206Z 250DEG 17KT 4124 10286
TORNADO...OBSERVED
HAIL...1.50IN
$$
FINCH202 WWUS55 KCYS 212235 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 435 PM MDT FRI JUN 21 2013 NEC033-212243- /O.CAN.KCYS.TO.W.0018.000000T0000Z-130621T2245Z/ CHEYENNE NE- 435 PM MDT FRI JUN 21 2013 ...THE TORNADO WARNING FOR EASTERN CHEYENNE COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER...SMALL HAIL AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM. IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM TONIGHT. LAT...LON 4144 10280 4126 10263 4110 10300 4127 10308 TIME...MOT...LOC 2233Z 250DEG 17KT 4128 10270 $$ FINCH
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 2:38 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 52 min |
| Jun 21, 2:52 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 53 min |
| Jun 21, 3:03 PM MDT | Tornado Warning | CYS | Cheyenne | 27 min |
| Jun 21, 3:22 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Cheyenne, Morrill | 38 min |
| Jun 21, 3:30 PM MDT | Tornado Warning | CYS | Cheyenne, Morrill | 30 min |
| Jun 21, 3:48 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 42 min |
| Jun 21, 3:56 PM MDT | Tornado Warning | CYS | Banner, Kimball | 34 min |
| Jun 21, 4:27 PM MDT | Flash Flood Warning | CYS | Cheyenne | 6 hr |
| Jun 21, 4:28 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Cheyenne, Kimball, Morrill | 47 min |
| Jun 21, 4:37 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes | 38 min |
| Jun 21, 5:41 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 49 min |
Nearby
Tornado Warnings in Nebraska, 2013Every tornado warning in 2013Tornadoes in 2013
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.