Alert archive / Nebraska / Tornado Warnings in 2013

Tornado Warning 30, NWS North Platte, NE

August 1, 2013Custer County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 1, 2013, 9:18 PM CDT for Custer County, Nebraska. It was in force for 27 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: Aug 1, 2013, 9:18 PM CDT (02:18 UTC)
Expired: Aug 1, 2013, 9:45 PM CDT
In force: 27 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.5 in

County Custer County, NE

The radar

The North Platte radar (KLNX), 107 km from the middle of the area, began a volume at 02:20 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
Aug 1, 1:22 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.3 hours before the alert went out and 40 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: 1701 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1985 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

493 
WFUS53 KLBF 020218
TORLBF
NEC041-020245-
/O.NEW.KLBF.TO.W.0030.130802T0218Z-130802T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
918 PM CDT THU AUG 1 2013

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

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

* UNTIL 945 PM CDT

* AT 915 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 10 MILES NORTHEAST OF BRADY...AND MOVING
  SOUTHEAST AT 20 MPH.

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

  SOURCE...RADAR INDICATED ROTATION.

  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...
  MAINLY RURAL AREAS OF SOUTHWESTERN CUSTER COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4106 10025 4114 10024 4105 9995 4104 9996
      4104 10001 4104 10022
TIME...MOT...LOC 0219Z 315DEG 25KT 4110 10021

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

JACOBS

2 follow-up statements

531 
WWUS53 KLBF 020233
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
933 PM CDT THU AUG 1 2013

NEC041-020245-
/O.CON.KLBF.TO.W.0030.000000T0000Z-130802T0245Z/
CUSTER NE-
933 PM CDT THU AUG 1 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CUSTER COUNTY
UNTIL 945 PM CDT...

AT 929 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 9 MILES NORTH OF GOTHENBURG...AND MOVING SOUTHEAST AT 15
MPH.

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

SOURCE...RADAR INDICATED ROTATION.

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...
  MAINLY RURAL AREAS OF EXTREME SOUTHWESTERN CUSTER COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4105 10022 4110 10022 4105 9995 4104 9996
      4104 10022
TIME...MOT...LOC 0233Z 324DEG 13KT 4105 10016

TORNADO...RADAR INDICATED
HAIL...1.50IN

$$

JACOBS

974 
WWUS53 KLBF 020244
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
944 PM CDT THU AUG 1 2013

NEC041-020254-
/O.EXP.KLBF.TO.W.0030.000000T0000Z-130802T0245Z/
CUSTER NE-
944 PM CDT THU AUG 1 2013

...THE TORNADO WARNING FOR SOUTHWESTERN CUSTER COUNTY WILL EXPIRE AT
945 PM CDT/845 PM MDT/...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER...SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL
POSSIBLE WITH THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 10 PM CDT.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

LAT...LON 4105 10022 4110 10022 4105 9995 4104 9996
      4104 10022
TIME...MOT...LOC 0244Z 324DEG 13KT 4102 10013

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 7:04 PM CDT	Tornado Warning	LBF	Cherry, Grant, Hooker	26 min
Aug 1, 7:25 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Cherry	50 min
Aug 1, 7:28 PM CDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	62 min
Aug 1, 7:33 PM CDT	Tornado Warning	LBF	Cherry, Hooker	27 min
Aug 1, 7:52 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	38 min
Aug 1, 8:01 PM CDT	Severe Thunderstorm Warning	LBF	Hooker	44 min
Aug 1, 8:03 PM CDT	Severe Thunderstorm Warning	LBF	Custer	42 min
Aug 1, 8:05 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	40 min
Aug 1, 8:15 PM CDT	Severe Thunderstorm Warning	LBF	Custer	45 min
Aug 1, 8:24 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln	51 min
Aug 1, 8:29 PM CDT	Severe Thunderstorm Warning	LBF	Garden	61 min
Aug 1, 8:43 PM CDT	Severe Thunderstorm Warning	LBF	Deuel, Garden, Keith, Perkins	47 min
Aug 1, 8:58 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln	47 min
Aug 1, 9:01 PM CDT	Areal Flood Advisory	LBF	Custer	6 hr
Aug 1, 9:26 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Perkins	49 min
Aug 1, 9:57 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	48 min
Aug 1, 10:24 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	66 min
Aug 1, 10:25 PM CDT	Areal Flood Advisory	LBF	Custer, Lincoln, Logan	6 hr
Aug 1, 10:51 PM CDT	Areal Flood Advisory	LBF	Lincoln	6 hr
Aug 1, 11:11 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	49 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.