Alert archive / Nebraska / Tornado Warnings in 2015

Tornado Warning 13, NWS North Platte, NE

August 7, 2015Chase County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 7, 2015, 7:32 PM MDT for Chase County, Nebraska. It was in force for 28 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
Aug 7, 2015, 7:32 PM MDT (01:32 UTC)
Expired
Aug 7, 2015, 8:00 PM MDT
In force
28 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Chase County, NE

The radar

The Goodland radar (KGLD), 113 km from the middle of the area, began a volume at 01:33 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

TimeReportWhereRemark
Aug 7, 7:36 PM MDTFUNNEL CLOUD7 Sw Champion, NE
Aug 7, 7:52 PM MDTHAIL 15 S Champion, NE

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.

IssuedProductOfficeLasted
Aug 7, 3:05 PM MDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.5 hours before the alert went out and 130 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, N. Platte/Lee Bi, NE at 00:00Z on 2015-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1367 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, N. Platte/Lee Bi, NE at 00:00Z on 2015-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.193958Sfc1 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
1367 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
1744 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.5

Open this sounding in Storm Lab

The text

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

239 
WFUS53 KLBF 080132
TORLBF
NEC029-080200-
/O.NEW.KLBF.TO.W.0013.150808T0132Z-150808T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
732 PM MDT FRI AUG 7 2015

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE  HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL CHASE COUNTY IN SOUTHWESTERN NEBRASKA...

* UNTIL 800 PM MDT
    
* AT 732 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 8 MILES SOUTHWEST OF CHAMPION...OR 13 MILES
  SOUTHWEST OF IMPERIAL...MOVING EAST AT 10 MPH.

  HAZARD...TORNADO AND QUARTER 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 CHASE COUNTY.

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.

&&

LAT...LON 4035 10192 4043 10187 4044 10165 4035 10158
TIME...MOT...LOC 0132Z 270DEG 13KT 4036 10179 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

MARTIN
2 follow-up statements
342 
WWUS53 KLBF 080139
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
739 PM MDT FRI AUG 7 2015

NEC029-080200-
/O.CON.KLBF.TO.W.0013.000000T0000Z-150808T0200Z/
CHASE NE-
739 PM MDT FRI AUG 7 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM MDT FOR SOUTH
CENTRAL CHASE COUNTY...
        
AT 738 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES SOUTH OF CHAMPION...OR 12 MILES SOUTHWEST OF
IMPERIAL...MOVING EAST AT 10 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL. 

SOURCE...WEATHER SPOTTERS REPORTED A FUNNEL CLOUD. 

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 CHASE COUNTY.

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.

&&

LAT...LON 4035 10188 4043 10184 4044 10165 4035 10158
TIME...MOT...LOC 0138Z 270DEG 13KT 4036 10176 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

MARTIN
664 
WWUS53 KLBF 080151
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
751 PM MDT FRI AUG 7 2015

NEC029-080200-
/O.CON.KLBF.TO.W.0013.000000T0000Z-150808T0200Z/
CHASE NE-
751 PM MDT FRI AUG 7 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM MDT FOR SOUTH
CENTRAL CHASE COUNTY...
    
AT 751 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES SOUTH OF CHAMPION...OR 11 MILES SOUTH OF
IMPERIAL...MOVING EAST AT 15 MPH.

HAZARD...TORNADO AND QUARTER 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 CHASE COUNTY.

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.

&&

LAT...LON 4035 10183 4043 10178 4044 10165 4035 10158
TIME...MOT...LOC 0151Z 270DEG 13KT 4036 10170 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

MARTIN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 6:31 PM MDTSpecial Weather StatementLBFDeuel29 min
Aug 7, 6:34 PM MDTSpecial Weather StatementLBFChase26 min
Aug 7, 6:51 PM MDTSevere Thunderstorm WarningLBFChase, Perkins24 min
Aug 7, 7:00 PM MDTSevere Thunderstorm WarningLBFChase30 min
Aug 7, 7:12 PM MDTSevere Thunderstorm WarningLBFPerkins33 min
Aug 7, 7:14 PM MDTSpecial Weather StatementLBFGrant, McPherson46 min
Aug 7, 7:22 PM MDTSevere Thunderstorm WarningLBFChase38 min
Aug 7, 7:39 PM MDTFlash Flood WarningLBFChase5 hr
Aug 7, 7:49 PM MDTSevere Thunderstorm WarningLBFChase, Perkins41 min
Aug 7, 7:53 PM MDTSpecial Weather StatementLBFHooker, Thomas52 min
Aug 7, 7:58 PM MDTSevere Thunderstorm WarningLBFChase47 min
Aug 7, 8:26 PM MDTSevere Thunderstorm WarningLBFChase, Hayes49 min
Aug 7, 8:35 PM MDTSpecial Weather StatementLBFBrown40 min
Aug 7, 8:48 PM MDTSpecial Weather StatementLBFHayes27 min
Aug 7, 8:50 PM MDTSpecial Weather StatementLBFFrontier25 min
Aug 7, 8:55 PM MDTFlash Flood WarningLBFChase, Hayes5 hr
Aug 7, 8:59 PM MDTSpecial Weather StatementLBFCherry46 min
Aug 7, 9:12 PM MDTAreal Flood AdvisoryLBFLincoln3 hr
Aug 7, 10:14 PM MDTSpecial Weather StatementLBFLincoln46 min

Nearby

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