Alert archive / Nebraska / Tornado Warnings in 2017

Tornado Warning 19, NWS Cheyenne, WY

June 12, 2017Banner County, Scotts Bluff County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jun 12, 2017, 6:06 PM MDT for Banner County, Scotts Bluff County, Nebraska. It was in force for 24 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 12, 2017, 6:06 PM MDT (00:06 UTC)
Expired: Jun 12, 2017, 6:30 PM MDT
In force: 24 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Banner County, NE, Scotts Bluff County, NE

The radar

The Cheyenne radar (KCYS), 117 km from the middle of the area, began a volume at 00:06 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 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 PDS	SPC	8 hr

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.1 hours before the alert went out and 213 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted.

857 
WFUS55 KCYS 130006
TORCYS
NEC007-157-130030-
/O.NEW.KCYS.TO.W.0019.170613T0006Z-170613T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cheyenne WY
606 PM MDT MON JUN 12 2017

The National Weather Service in Cheyenne has issued a

* Tornado Warning for...
  Eastern Scotts Bluff County in the Panhandle of Nebraska...
  North central Banner County in the Panhandle of Nebraska...

* Until 630 PM MDT
    
* At 606 PM MDT, a severe thunderstorm capable of producing a tornado
  was located near Wildcat Hills Campground, or 10 miles southwest of
  Scottsbluff, moving northeast at 30 mph.

  HAZARD...Tornado and golf ball 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 dangerous storm will be near...
  Wildcat Hills Campground and Wildcat Hills State Recreation Area 
  around 610 PM MDT. 
  Gering and Scotts Bluff National Monument around 620 PM MDT. 
  Scottsbluff and Terrytown around 625 PM MDT. 
  Minatare and Scottsbluff Airport around 630 PM MDT. 

Other locations impacted by this tornadic thunderstorm include
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.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Cheyenne.

&&

LAT...LON 4163 10375 4174 10391 4199 10354 4180 10337
TIME...MOT...LOC 0006Z 233DEG 25KT 4172 10375 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Levin

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
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 Tornado observed	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 Tornado observedConsiderable damage threat	CYS	Banner, Morrill, Scotts Bluff	35 min
Jun 12, 7:28 PM MDT	Tornado Warning	CYS	Box Butte, Morrill, Scotts Bluff	47 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, 2017 Every tornado warning in 2017 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.