Alert archive / Nebraska / Tornado Warnings in 2017
Tornado Warning 25, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jun 12, 2017, 7:28 PM MDT for Box Butte County, Morrill County, Scotts Bluff County, Nebraska. It was in force for 47 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 12, 2017, 7:28 PM MDT (01:28 UTC)
- Expired
- Jun 12, 2017, 8:15 PM MDT
- In force
- 47 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 4.0 in
Counties Box Butte County, NE, Morrill County, NE, Scotts Bluff County, NE
The radar
The Cheyenne radar (KCYS), 144 km from the middle of the area, began a volume at 01:23 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 12, 8:00 PM MDT | HAIL 1.75 | 5 Nne Bonner, NE | NEAR THE MORRILL-BOX BUTTE COUNTY LINE. |
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 12, 1:11 PM MDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 1.5 hours before the alert went out and 212 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
- 108 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 3977 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
260
WFUS55 KCYS 130128
TORCYS
NEC013-123-157-130215-
/O.NEW.KCYS.TO.W.0025.170613T0128Z-170613T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cheyenne WY
728 PM MDT MON JUN 12 2017
The National Weather Service in Cheyenne has issued a
* Tornado Warning for...
South central Box Butte County in the Panhandle of Nebraska...
Eastern Scotts Bluff County in the Panhandle of Nebraska...
Northwestern Morrill County in the Panhandle of Nebraska...
* Until 815 PM MDT
* At 727 PM MDT, a severe thunderstorm capable of producing a tornado
was located over Moomaws Corner, or 17 miles east of Scottsbluff,
moving northeast at 20 mph.
HAZARD...Tornado and softball size hail.
SOURCE...Radar indicated rotation. This large thunderstorm has a
history of producing tornadoes!
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
The Intersection Of Highway 385 And L62 around 745 PM MDT.
Angora around 755 PM MDT.
Other locations impacted by this tornadic thunderstorm include McGrew
and Melbeta.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4165 10320 4168 10337 4170 10337 4170 10343
4172 10355 4193 10366 4214 10295 4180 10292
TIME...MOT...LOC 0127Z 242DEG 19KT 4186 10332
TORNADO...RADAR INDICATED
HAIL...4.00IN
$$
Hammer1 follow-up statement
547
WWUS55 KCYS 130149
SVSCYS
Severe Weather Statement
National Weather Service Cheyenne WY
749 PM MDT MON JUN 12 2017
NEC157-130158-
/O.CAN.KCYS.TO.W.0025.000000T0000Z-170613T0215Z/
Scotts Bluff NE-
749 PM MDT MON JUN 12 2017
...THE TORNADO WARNING FOR EASTERN SCOTTS BLUFF COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A tornado watch remains in effect until 900 PM MDT for the Panhandle
of Nebraska.
LAT...LON 4173 10332 4202 10335 4214 10295 4180 10292
TIME...MOT...LOC 0148Z 242DEG 21KT 4192 10316
$$
NEC013-123-130215-
/O.CON.KCYS.TO.W.0025.000000T0000Z-170613T0215Z/
Box Butte NE-Morrill NE-
749 PM MDT MON JUN 12 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM MDT FOR SOUTH
CENTRAL BOX BUTTE AND NORTHWESTERN MORRILL COUNTIES...
At 748 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Angora, or 19 miles southwest of Alliance, moving
northeast at 25 mph.
HAZARD...Tornado and softball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
south central Box Butte and northwestern Morrill Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4173 10332 4202 10335 4214 10295 4180 10292
TIME...MOT...LOC 0148Z 242DEG 21KT 4192 10316
TORNADO...RADAR INDICATED
HAIL...4.00IN
$$
HammerThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 6:06 PM MDT | Tornado Warning | CYS | Banner, Scotts Bluff | 24 min |
| Jun 12, 6:12 PM MDT | Severe Thunderstorm Warning | CYS | Dawes, Sioux | 33 min |
| Jun 12, 6:26 PM MDT | Tornado Warning | CYS | Scotts Bluff | 34 min |
| Jun 12, 6:30 PM MDT | Tornado Warning | CYS | Banner, Scotts Bluff | 30 min |
| Jun 12, 6:34 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 41 min |
| Jun 12, 6:57 PM MDT | Tornado Warning | CYS | Box Butte, Morrill, Scotts Bluff | 33 min |
| Jun 12, 6:59 PM MDT | Tornado Warning | CYS | Banner, Morrill, Scotts Bluff | 31 min |
| Jun 12, 7:10 PM MDT | Tornado Warning | CYS | Banner, Morrill, Scotts Bluff | 35 min |
| Jun 12, 7:58 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill | 47 min |
| Jun 12, 8:07 PM MDT | Tornado Warning | CYS | Box Butte, Morrill | 21 min |
| Jun 12, 10:02 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 28 min |
| Jun 12, 10:23 PM MDT | Tornado Warning | CYS | Dawes, Sioux | 37 min |
| Jun 12, 11:24 PM MDT | Special Weather Statement | CYS | Dawes | 51 min |
| Jun 13, 12:10 AM MDT | Special Weather Statement | CYS | Dawes | 50 min |
Nearby
Tornado Warnings in Nebraska, 2017Every tornado warning in 2017Tornadoes in 2017
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.