Alert archive / Nebraska / Tornado Warnings in 2013

Tornado Warning 25, NWS North Platte, NE

July 9, 2013Custer County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 9, 2013, 5:15 PM CDT for Custer County, Nebraska. It was in force for 45 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: Jul 9, 2013, 5:15 PM CDT (22:15 UTC)
Expired: Jul 9, 2013, 6:00 PM CDT
In force: 45 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Observed
Hail: 1.5 in

County Custer County, NE

The radar

The North Platte radar (KLNX), 120 km from the middle of the area, began a volume at 22:16 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
Jul 9, 5:15 PM CDT	TORNADO	5 S Oconto, NE	REPORT OF A TORNADO ON THE GROUND.
Jul 9, 5:56 PM CDT	HAIL 1	1 Se Oconto, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.3 hours before the alert went out and 77 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: 1970 J/kg
Mixed-layer CIN: -253 J/kg
Mixed-layer LCL: 1534 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

934 
WFUS53 KLBF 092215
TORLBF
NEC041-092300-
/O.NEW.KLBF.TO.W.0025.130709T2215Z-130709T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
515 PM CDT TUE JUL 9 2013

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL CUSTER COUNTY IN CENTRAL NEBRASKA...

* UNTIL 600 PM CDT

* AT 512 PM CDT...A CONFIRMED TORNADO WAS LOCATED 6 MILES SOUTH OF
  OCONTO...AND MOVING EAST AT 20 MPH.

  HAZARD...DAMAGING TORNADO AND PING PONG BALL SIZE HAIL.

  SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.

  IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
           ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS
           WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS
           LIKELY.

* LOCATIONS IMPACTED INCLUDE...
  OCONTO...BURR OAK...CUMRO AND INTERSECTION OF HIGHWAY 183 AND CUMRO
  ROAD.

THIS INCLUDES HIGHWAY 183 BETWEEN MILE MARKERS 73 AND 80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4115 9990 4116 9933 4104 9934 4105 9991
TIME...MOT...LOC 2215Z 273DEG 17KT 4106 9979

TORNADO...OBSERVED
HAIL...1.50IN

$$

BUTTLER

2 follow-up statements

912 
WWUS53 KLBF 092224
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
524 PM CDT TUE JUL 9 2013

NEC041-092300-
/O.CON.KLBF.TO.W.0025.000000T0000Z-130709T2300Z/
CUSTER NE-
524 PM CDT TUE JUL 9 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL CUSTER
COUNTY UNTIL 600 PM CDT...

AT 521 PM CDT...A CONFIRMED TORNADO WAS LOCATED 6 MILES SOUTH OF 
OCONTO...AND MOVING EAST AT 20 MPH. THIS TORNADO WILL MOVE ALONG THE 
CUSTER AND DAWSON COUNTY LINE. 

HAZARD...DAMAGING TORNADO AND PING PONG BALL SIZE HAIL.

SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.

IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
         ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL
         BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY.

LOCATIONS IMPACTED INCLUDE...
BURR OAK...CUMRO AND INTERSECTION OF HIGHWAY 183 AND CUMRO ROAD.

THIS INCLUDES HIGHWAY 183 BETWEEN MILE MARKERS 73 AND 80.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4115 9990 4116 9933 4104 9934 4105 9991
TIME...MOT...LOC 2224Z 273DEG 17KT 4105 9973

TORNADO...OBSERVED
HAIL...1.50IN

$$
BUTTLER

977 
WWUS53 KLBF 092238
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
538 PM CDT TUE JUL 9 2013

NEC041-092248-
/O.CAN.KLBF.TO.W.0025.000000T0000Z-130709T2300Z/
CUSTER NE-
538 PM CDT TUE JUL 9 2013

...THE TORNADO WARNING FOR SOUTH CENTRAL CUSTER COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER...SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH 
THIS THUNDERSTORM...ESPECIALLY ALONG THE CUSTER AND DAWSON COUNTY 
LINE...SOUTH OF OCONTO.

LAT...LON 4115 9990 4116 9933 4104 9934 4105 9991
TIME...MOT...LOC 2238Z 273DEG 17KT 4104 9964

$$

BUTTLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 7:34 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	41 min
Jul 8, 8:14 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	46 min
Jul 8, 8:50 PM CDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	40 min
Jul 8, 9:46 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	59 min
Jul 8, 10:11 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	49 min
Jul 9, 5:51 PM CDT	Severe Thunderstorm Warning	LBF	Custer	54 min
Jul 9, 6:02 PM CDT	Severe Thunderstorm Warning	LBF	Custer	58 min
Jul 9, 6:53 PM CDT	Severe Thunderstorm Warning	LBF	Custer	67 min
Jul 9, 6:59 PM CDT	Severe Thunderstorm Warning	LBF	Frontier	61 min

Nearby

Tornado Warnings in Nebraska, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.