Alert archive / Nebraska / Tornado Warnings in 2015

Tornado Warning 9, NWS Cheyenne, WY

June 16, 2015Morrill County, Nebraska

NWS Cheyenne, WY issued this tornado warning at Jun 16, 2015, 6:44 PM MDT for Morrill County, Nebraska. It was in force for 46 min. 2 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: Jun 16, 2015, 6:44 PM MDT (00:44 UTC)
Expired: Jun 16, 2015, 7:30 PM MDT
In force: 46 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Morrill County, NE

The radar

The Cheyenne radar (KCYS), 150 km from the middle of the area, began a volume at 00:44 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 16, 7:03 PM MDT	TORNADO	8 Sse Bridgeport, NE	LATE REPORT VIA SOCIAL MEDIA.
Jun 16, 7:06 PM MDT	HAIL 2	Ne Redington, NE	THREE MILES WEST OF COURT HOUSE AND JAIL ROCK.

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 16, 2:02 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.7 hours before the alert went out and 187 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: 85 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 2903 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

420 
WFUS55 KCYS 170044
TORCYS
NEC123-170130-
/O.NEW.KCYS.TO.W.0009.150617T0044Z-150617T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
644 PM MDT TUE JUN 16 2015

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN MORRILL COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 730 PM MDT
    
* AT 644 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR REDINGTON...OR 31 MILES NORTHWEST OF
  SIDNEY...MOVING SOUTHEAST AT 25 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...
  COURT HOUSE AND JAIL ROCKS AROUND 655 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
BROADWATER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING ISSUED
FOR THE SAME AREA.

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4144 10285 4144 10324 4153 10336 4166 10335
      4171 10326 4162 10271
TIME...MOT...LOC 0044Z 295DEG 22KT 4155 10322 

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

$$

HAMMER

2 follow-up statements

348 
WWUS55 KCYS 170101
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
701 PM MDT TUE JUN 16 2015

NEC123-170130-
/O.CON.KCYS.TO.W.0009.000000T0000Z-150617T0130Z/
MORRILL NE-
701 PM MDT TUE JUN 16 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM MDT FOR SOUTHERN
MORRILL COUNTY...
    
AT 701 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR COURT HOUSE AND JAIL ROCKS...OR 27 MILES NORTH OF
SIDNEY...MOVING SOUTHEAST AT 25 MPH.

HAZARD...POSSIBLE 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 TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHERN MORRILL COUNTY...INCLUDING THE FOLLOWING LOCATIONS...
BROADWATER.

LAT...LON 4144 10285 4144 10319 4153 10328 4169 10314
      4162 10271
TIME...MOT...LOC 0101Z 295DEG 21KT 4151 10315 

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

$$

HAMMER

034 
WWUS55 KCYS 170121
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
721 PM MDT TUE JUN 16 2015

NEC123-170130-
/O.EXP.KCYS.TO.W.0009.000000T0000Z-150617T0130Z/
MORRILL NE-
721 PM MDT TUE JUN 16 2015

...THE TORNADO WARNING FOR SOUTHERN MORRILL COUNTY WILL EXPIRE AT 730
PM MDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO. 
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER NICKEL 
SIZE HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT FOR
CENTRAL NEBRASKA.

LAT...LON 4144 10285 4144 10319 4153 10328 4169 10314
      4162 10271
TIME...MOT...LOC 0117Z 295DEG 22KT 4151 10315 

$$

HAMMER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 6:14 PM MDT	Special Weather Statement	CYS	Morrill	31 min
Jun 16, 6:19 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Morrill, Scotts Bluff	41 min
Jun 16, 6:23 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff, Sioux	37 min
Jun 16, 6:56 PM MDT	Areal Flood Advisory	CYS	Scotts Bluff	3 hr
Jun 16, 6:59 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff	15 min
Jun 16, 7:09 PM MDT	Flash Flood Warning	CYS	Scotts Bluff	3 hr
Jun 16, 7:12 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Scotts Bluff	48 min
Jun 16, 7:29 PM MDT	Special Weather Statement	CYS	Morrill	46 min
Jun 16, 7:44 PM MDT	River Flood Warning	CYS	Scotts Bluff	62 hr
Jun 16, 8:12 PM MDT	Flash Flood Warning	CYS	Scotts Bluff	3 hr
Jun 16, 8:19 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne, Morrill	11 min
Jun 16, 10:16 PM MDT	Areal Flood Warning	CYS	Scotts Bluff	3 hr
Jun 17, 5:24 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Scotts Bluff	36 min
Jun 17, 5:39 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff	36 min
Jun 17, 5:57 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff, Sioux	33 min
Jun 17, 5:58 PM MDT	Areal Flood Advisory	CYS	Scotts Bluff	3 hr

Nearby

Tornado Warnings in Nebraska, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.