Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 55, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 19, 2012, 11:10 PM MDT for Box Butte County, Dawes County, Sioux County, Nebraska. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2012, 11:10 PM MDT (05:10 UTC)
- Expired
- Jun 20, 2012, 12:00 AM MDT
- In force
- 50 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Box Butte County, NE, Dawes County, NE, Sioux County, NE
The radar
The Cheyenne radar (KCYS), 168 km from the middle of the area, began a volume at 05:11 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.
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 5.2 hours before the alert went out and 203 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
- 1667 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 323 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
420 WUUS55 KCYS 200510 SVRCYS NEC013-045-165-200600- /O.NEW.KCYS.SV.W.0055.120620T0510Z-120620T0600Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 1110 PM MDT TUE JUN 19 2012 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN BOX BUTTE COUNTY IN THE PANHANDLE OF NEBRASKA... SOUTH CENTRAL DAWES COUNTY IN THE PANHANDLE OF NEBRASKA... SOUTH CENTRAL SIOUX COUNTY IN THE PANHANDLE OF NEBRASKA... * UNTIL MIDNIGHT MDT * AT 1106 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 14 MILES NORTH OF MORRILL...OR 18 MILES EAST OF TORRINGTON...AND MOVING NORTHEAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... FLAHERTYS CORNER AND MARSLAND. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 4253 10323 4211 10318 4210 10384 4221 10391 TIME...MOT...LOC 0510Z 243DEG 34KT 4217 10381 WIND...HAIL 60MPH 1.00IN $$ HAHN
3 follow-up statements
805 WWUS55 KCYS 200528 SVSCYS SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1128 PM MDT TUE JUN 19 2012 NEC013-045-165-200600- /O.CON.KCYS.SV.W.0055.000000T0000Z-120620T0600Z/ BOX BUTTE NE-DAWES NE-SIOUX NE- 1128 PM MDT TUE JUN 19 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL SIOUX...SOUTH CENTRAL DAWES AND WESTERN BOX BUTTE COUNTIES UNTIL MIDNIGHT MDT... AT 1124 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 9 MILES SOUTHWEST OF FLAHERTYS CORNER...OR 25 MILES NORTH OF SCOTTSBLUFF... MOVING EAST AT 35 MPH. LOCATIONS IMPACTED INCLUDE... FLAHERTYS CORNER AND MARSLAND. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS IF YOU ARE IN THE PATH OF THIS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 4211 10361 4231 10370 4253 10323 4211 10318 TIME...MOT...LOC 0528Z 249DEG 41KT 4224 10350 WIND...HAIL 60MPH 1.75IN $$ HAHN
699
WWUS55 KCYS 200543
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1143 PM MDT TUE JUN 19 2012
NEC045-165-200552-
/O.CAN.KCYS.SV.W.0055.000000T0000Z-120620T0600Z/
DAWES NE-SIOUX NE-
1143 PM MDT TUE JUN 19 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SIOUX AND SOUTH
CENTRAL DAWES COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA. THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
LAT...LON 4219 10343 4232 10345 4239 10344 4244 10331
4244 10323 4243 10322 4217 10319
TIME...MOT...LOC 0542Z 249DEG 41KT 4229 10330
$$
NEC013-200600-
/O.CON.KCYS.SV.W.0055.000000T0000Z-120620T0600Z/
BOX BUTTE NE-
1143 PM MDT TUE JUN 19 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
BOX BUTTE COUNTY UNTIL MIDNIGHT MDT...
AT 1138 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES
SOUTHEAST OF FLAHERTYS CORNER...OR 27 MILES NORTHWEST OF ALLIANCE...
MOVING EAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF CENTRAL BOX BUTTE COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS IF YOU ARE IN
THE PATH OF THIS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.
&&
LAT...LON 4219 10343 4232 10345 4239 10344 4244 10331
4244 10323 4243 10322 4217 10319
TIME...MOT...LOC 0542Z 249DEG 41KT 4229 10330
WIND...HAIL 60MPH 1.75IN
$$
HAHN811
WWUS55 KCYS 200557
SVSCYS
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1157 PM MDT TUE JUN 19 2012
NEC013-200605-
/O.EXP.KCYS.SV.W.0055.000000T0000Z-120620T0600Z/
BOX BUTTE NE-
1157 PM MDT TUE JUN 19 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BOX BUTTE COUNTY
WILL EXPIRE AT MIDNIGHT MDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA. HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL
POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 4219 10343 4232 10345 4239 10344 4244 10331
4244 10323 4243 10322 4217 10319
TIME...MOT...LOC 0555Z 249DEG 41KT 4234 10311
$$
HAHNThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 9:20 PM MDT | Special Weather Statement | CYS | Dawes | 25 min |
| Jun 19, 10:27 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 48 min |
| Jun 19, 10:50 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 25 min |
| Jun 19, 10:56 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 34 min |
| Jun 19, 10:57 PM MDT | Areal Flood Advisory | CYS | Sioux | 3 hr |
| Jun 19, 11:19 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill, Scotts Bluff | 41 min |
| Jun 19, 11:39 PM MDT | Special Weather Statement | CYS | Box Butte | 21 min |
| Jun 19, 11:59 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 31 min |
| Jun 20, 12:08 AM MDT | Special Weather Statement | CYS | Morrill | 67 min |
| Jun 20, 1:47 AM MDT | Special Weather Statement | CYS | Box Butte, Morrill | 58 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2012Every severe thunderstorm warning in 2012
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; radar from the NEXRAD Level II archive.