Alert archive / Nebraska / Tornado Warnings in 2010

Tornado Warning 2, NWS North Platte, NE

April 13, 2010Arthur County, Grant County, Keith County, Nebraska

NWS North Platte, NE issued this tornado warning at Apr 13, 2010, 4:28 PM MDT for Arthur County, Grant County, Keith 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: Apr 13, 2010, 4:28 PM MDT (22:28 UTC)
Expired: Apr 13, 2010, 4:55 PM MDT
In force: 27 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Arthur County, NE, Grant County, NE, Keith County, NE

The radar

The North Platte radar (KLNX), 113 km from the middle of the area, began a volume at 22:30 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
Apr 13, 11:48 AM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.5 hours before the alert went out and 112 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: 8 J/kg
Mixed-layer CIN: -192 J/kg
Mixed-layer LCL: 883 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 230 m²/s²
0-3 km storm-relative helicity: 148 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.

340 
WFUS53 KLBF 132228
TORLBF
NEC005-075-101-132315-
/O.NEW.KLBF.TO.W.0002.100413T2228Z-100413T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
428 PM MDT TUE APR 13 2010

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN ARTHUR COUNTY IN WEST CENTRAL NEBRASKA...
  SOUTHEASTERN GRANT COUNTY IN WEST CENTRAL NEBRASKA...
  NORTHWESTERN KEITH COUNTY IN SOUTHWEST NEBRASKA...

* UNTIL 515 PM MDT

* AT 426 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR OTTER CREEK CAMPGROUND...OR 18 MILES
  SOUTHWEST OF ARTHUR...AND MOVING NORTHEAST AT 50 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  HAYTHORN LAKE AROUND 440 PM MDT.
  ARTHUR AROUND 445 PM MDT.
  JENSEN LAKE AROUND 450 PM MDT.
  SAND PUDDIN LAKE AROUND 455 PM MDT.
  GREEN LAKE AROUND 505 PM MDT.
  SPRING VALLEY LAKE AND PRATT LAKE AROUND 510 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
HIGHWAY 61 MILE MARKER 120...HIGHWAY 61 MILE MARKER 130 AND HIGHWAY
61 MILE MARKER 140.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4139 10201 4139 10198 4144 10198 4199 10169
      4190 10143 4185 10143 4126 10182 4133 10204
TIME...MOT...LOC 2228Z 204DEG 45KT 4138 10188

$$

BLONDIN

2 follow-up statements

313 
WWUS53 KLBF 132239
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
539 PM CDT TUE APR 13 2010

NEC101-132248-
/O.CAN.KLBF.TO.W.0002.000000T0000Z-100413T2315Z/
KEITH NE-
439 PM MDT TUE APR 13 2010

...THE TORNADO WARNING FOR NORTHWESTERN KEITH COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4199 10168 4190 10144 4185 10143 4139 10174
      4139 10183 4144 10198
TIME...MOT...LOC 2238Z 204DEG 45KT 4149 10181

$$

NEC005-075-132315-
/O.CON.KLBF.TO.W.0002.000000T0000Z-100413T2315Z/
ARTHUR NE-GRANT NE-
439 PM MDT TUE APR 13 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN GRANT AND
WESTERN ARTHUR COUNTIES UNTIL 515 PM MDT...

AT 435 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING DAMAGING STRAIGHT LINE WINDS
AND BRIEF RAIN-WRAPPED TORNADOES.  THIS DANGEROUS STORM WAS LOCATED 7
MILES SOUTHWEST OF HAYTHORN LAKE...OR 11 MILES SOUTHWEST OF ARTHUR...
MOVING NORTHEAST AT 50 MPH.

THIS DANGEROUS STORM WILL BE NEAR...
  ARTHUR AROUND 445 PM MDT.
  JENSEN LAKE AROUND 450 PM MDT.
  SAND PUDDIN LAKE AROUND 455 PM MDT.
  GREEN LAKE AROUND 505 PM MDT.
  SPRING VALLEY LAKE AND PRATT LAKE AROUND 510 PM MDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADO INCLUDE HIGHWAY 61 MILE
MARKER 130 AND HIGHWAY 61 MILE MARKER 140.

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.

&&

LAT...LON 4199 10168 4190 10144 4185 10143 4139 10174
      4139 10183 4144 10198
TIME...MOT...LOC 2238Z 204DEG 45KT 4149 10181

$$
DDB

455 
WWUS53 KLBF 132255
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
555 PM CDT TUE APR 13 2010

NEC005-075-132305-
/O.CAN.KLBF.TO.W.0002.000000T0000Z-100413T2315Z/
ARTHUR NE-GRANT NE-
455 PM MDT TUE APR 13 2010

...THE TORNADO WARNING FOR SOUTHEASTERN GRANT AND WESTERN ARTHUR
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4199 10168 4190 10144 4185 10143 4139 10174
      4139 10183 4144 10198
TIME...MOT...LOC 2255Z 204DEG 45KT 4168 10169

$$

BLONDIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 12:17 PM MDT	High Wind Warning	LBF	Blaine, Brown, Chase, Cherry, Custer, Frontier and 11 more	8 hr
Apr 13, 5:09 PM MDT	Severe Thunderstorm Warning	LBF	Keith, Perkins	35 min

Nearby

Tornado Warnings in Nebraska, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.