Alert archive / Nebraska / Tornado Warnings in 2017

Tornado Warning 3, NWS North Platte, NE

June 12, 2017Sheridan County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 12, 2017, 9:04 PM MDT for Sheridan County, Nebraska. It was in force for 41 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, 9:04 PM MDT (03:04 UTC)
Expired
Jun 12, 2017, 9:45 PM MDT
In force
41 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon

County Sheridan County, NE

The radar

The North Platte radar (KLNX), 149 km from the middle of the area, began a volume at 03:05 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.

IssuedProductOfficeLasted
Jun 12, 5:35 PM MDTTornado WatchSPC8 hr

The nearest sounding before it

Rapid City, SD (KRAP), launched 00:00Z, 3.1 hours before the alert went out and 193 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-pSkew-T log-p diagram, Rapid City, SD at 00:00Z on 2017-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 421 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 00:00Z on 2017-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
421 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1755 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.0

Open this sounding in Storm Lab

The text

As transmitted.

048 
WFUS53 KLBF 130304
TORLBF
NEC161-130345-
/O.NEW.KLBF.TO.W.0003.170613T0304Z-170613T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service North Platte NE
904 PM MDT MON JUN 12 2017

The National Weather Service in North Platte NE has issued a

* Tornado Warning for...
  Southeastern Sheridan County in the Panhandle of Nebraska...

* Until 945 PM MDT
    
* At 904 PM MDT, Doppler radar indicated a severe thunderstorm
  capable of producing a tornado. This dangerous storm was located 17
  miles northwest of Ellsworth, or 26 miles northeast of Alliance,
  and moving northeast at 25 mph.

* Locations impacted include...
  Diamond Lake and Argo Hill. 

This includes Highway 250 between mile markers 13 and 23.
 
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 in a mobile
home or outdoors, move to the closest substantial shelter and protect
yourself from flying debris.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4256 10220 4233 10205 4221 10247 4229 10253
TIME...MOT...LOC 0304Z 235DEG 23KT 4228 10243 

$$

CDC
1 follow-up statement
019 
WWUS53 KLBF 130325
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
925 PM MDT MON JUN 12 2017

NEC161-130345-
/O.CON.KLBF.TO.W.0003.000000T0000Z-170613T0345Z/
Sheridan NE-
925 PM MDT MON JUN 12 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM MDT FOR EAST
CENTRAL SHERIDAN COUNTY...
    
At 924 PM MDT, Doppler radar indicated a severe thunderstorm capable
of producing a tornado. This dangerous storm was located 22 miles
north of Ellsworth, or 24 miles south of Rushville, moving northeast
at 25 mph.

At 840 pm MDT, a tornado was reported 4 miles north of Antioch and a 
storm spotter saw downed powerlines also.

Locations impacted include...
Argo Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4256 10220 4233 10205 4227 10228 4239 10241
TIME...MOT...LOC 0324Z 222DEG 23KT 4238 10232 

$$

CDC

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 6:45 PM MDTSpecial Weather StatementLBFSheridan45 min
Jun 12, 6:57 PM MDTSevere Thunderstorm WarningLBFSheridan48 min
Jun 12, 7:43 PM MDTSevere Thunderstorm WarningLBFSheridan47 min
Jun 12, 8:00 PM MDTAreal Flood AdvisoryLBFSheridan60 min
Jun 12, 8:09 PM MDTSevere Thunderstorm WarningLBFSheridan51 min
Jun 12, 8:17 PM MDTSevere Thunderstorm WarningLBFSheridan58 min
Jun 12, 8:25 PM MDTSevere Thunderstorm WarningLBFSheridan29 min
Jun 12, 8:37 PM MDTTornado WarningLBFSheridan38 min
Jun 12, 9:12 PM MDTAreal Flood AdvisoryLBFSheridan63 min
Jun 12, 9:18 PM MDTSevere Thunderstorm WarningLBFSheridan42 min
Jun 12, 9:44 PM MDTTornado WarningLBFCherry, Sheridan46 min
Jun 12, 9:54 PM MDTSevere Thunderstorm WarningLBFCherry, Sheridan66 min
Jun 12, 10:27 PM MDTTornado WarningLBFCherry48 min
Jun 12, 10:56 PM MDTSevere Thunderstorm WarningLBFCherry43 min
Jun 13, 8:41 AM MDTRiver Flood WarningLBFGarden, Keith5 days
Jun 13, 2:16 PM MDTSpecial Weather StatementLBFKeya Paha44 min
Jun 13, 2:42 PM MDTSevere Thunderstorm WarningLBFBlaine, Brown, Rock48 min
Jun 13, 2:47 PM MDTSevere Thunderstorm WarningLBFKeya Paha, Rock43 min
Jun 13, 3:03 PM MDTSevere Thunderstorm WarningLBFBlaine, Custer42 min
Jun 13, 3:25 PM MDTSevere Thunderstorm WarningLBFBrown, Rock35 min
Jun 13, 3:27 PM MDTTornado WarningLBFBrown, Rock36 min
Jun 13, 3:28 PM MDTSevere Thunderstorm WarningLBFBoyd, Keya Paha10 min
Jun 13, 3:32 PM MDTTornado WarningLBFBoyd, Keya Paha8 min
Jun 13, 3:43 PM MDTSevere Thunderstorm WarningLBFBlaine, Loup, Rock30 min
Jun 13, 3:45 PM MDTTornado WarningLBFBoyd, Holt, Keya Paha, Rock32 min
Jun 13, 3:55 PM MDTTornado WarningLBFHolt, Rock38 min
Jun 13, 4:07 PM MDTSevere Thunderstorm WarningLBFHolt, Rock38 min
Jun 13, 4:25 PM MDTSevere Thunderstorm WarningLBFBoyd, Holt50 min
Jun 13, 4:35 PM MDTSevere Thunderstorm WarningLBFHolt, Rock30 min
Jun 13, 4:54 PM MDTSevere Thunderstorm WarningLBFBoyd, Holt31 min
Jun 13, 5:26 PM MDTSevere Thunderstorm WarningLBFBoyd, Holt19 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.