Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 18, NWS North Platte, NE

June 19, 2011Lincoln County, Logan County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 19, 2011, 6:31 PM CDT for Lincoln County, Logan County, Nebraska. It was in force for 29 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 19, 2011, 6:31 PM CDT (23:31 UTC)
Expired: Jun 19, 2011, 7:00 PM CDT
In force: 29 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Lincoln County, NE, Logan County, NE

The radar

The North Platte radar (KLNX), 72 km from the middle of the area, began a volume at 23:33 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.

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 19, 6:10 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.5 hours before the alert went out and 26 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: 324 J/kg
Mixed-layer CIN: -277 J/kg
Mixed-layer LCL: 1660 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: -18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

897 
WFUS53 KLBF 192331
TORLBF
NEC111-113-200000-
/O.NEW.KLBF.TO.W.0018.110619T2331Z-110620T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
631 PM CDT SUN JUN 19 2011

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN LINCOLN COUNTY IN SOUTHWEST NEBRASKA...
  SOUTHEASTERN LOGAN COUNTY IN WEST CENTRAL NEBRASKA...

* UNTIL 700 PM CDT

* AT 628 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 10 MILES NORTH OF MAXWELL...OR 16 MILES NORTHEAST
  OF NORTH PLATTE...AND MOVING NORTH AT 15 MPH.

* THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF NORTHEASTERN
  LINCOLN AND SOUTHEASTERN LOGAN COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.

&&

LAT...LON 4122 10053 4149 10053 4142 10025 4139 10025
      4120 10045
TIME...MOT...LOC 2331Z 197DEG 13KT 4124 10049

$$

JACOBS

2 follow-up statements

281 
WWUS53 KLBF 192345
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
645 PM CDT SUN JUN 19 2011

NEC111-113-200000-
/O.CON.KLBF.TO.W.0018.000000T0000Z-110620T0000Z/
LINCOLN NE-LOGAN NE-
645 PM CDT SUN JUN 19 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN LOGAN AND
NORTHEASTERN LINCOLN COUNTIES UNTIL 700 PM CDT...

AT 642 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 13 MILES SOUTH OF GANDY...OR 14 MILES SOUTH OF
STAPLETON...MOVING NORTH AT 15 MPH.

THIS DANGEROUS STORM WILL AFFECT MAINLY RURAL AREAS OF NORTHEASTERN
LINCOLN AND SOUTHEASTERN LOGAN COUNTIES.

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.

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 4122 10053 4149 10053 4142 10025 4139 10025
      4123 10042
TIME...MOT...LOC 2344Z 197DEG 13KT 4128 10047

$$

JACOBS

162 
WWUS53 KLBF 200000
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
700 PM CDT SUN JUN 19 2011

NEC111-113-200010-
/O.EXP.KLBF.TO.W.0018.000000T0000Z-110620T0000Z/
LINCOLN NE-LOGAN NE-
700 PM CDT SUN JUN 19 2011

...THE TORNADO WARNING FOR SOUTHEASTERN LOGAN AND NORTHEASTERN
LINCOLN COUNTIES HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

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 4122 10053 4149 10053 4142 10025 4139 10025
      4123 10042
TIME...MOT...LOC 0000Z 197DEG 13KT 4134 10045

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 5:22 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Keya Paha, Rock	38 min
Jun 19, 5:57 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Keya Paha, Rock	33 min
Jun 19, 6:15 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	45 min
Jun 19, 6:22 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Rock	38 min
Jun 19, 6:34 PM CDT	Severe Thunderstorm Warning	LBF	Hayes	41 min
Jun 19, 6:54 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	26 min

Nearby

Tornado Warnings in Nebraska, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.