Alert archive / Nebraska / Tornado Warnings in 2011

Tornado Warning 9, NWS North Platte, NE

May 30, 2011Holt County, Rock County, Nebraska

NWS North Platte, NE issued this tornado warning at May 30, 2011, 5:46 PM CDT for Holt County, Rock 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: May 30, 2011, 5:46 PM CDT (22:46 UTC)
Expired: May 30, 2011, 6:15 PM CDT
In force: 29 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon

Counties Holt County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 110 km from the middle of the area, began a volume at 22:47 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
May 30, 2:08 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.8 hours before the alert went out and 167 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: 1099 J/kg
Mixed-layer CIN: -360 J/kg
Mixed-layer LCL: 2078 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 302 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.

161 
WFUS53 KLBF 302246
TORLBF
NEC089-149-302315-
/O.NEW.KLBF.TO.W.0009.110530T2246Z-110530T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
546 PM CDT MON MAY 30 2011

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL HOLT COUNTY IN NORTH CENTRAL NEBRASKA...
  SOUTHEASTERN ROCK COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 615 PM CDT

* AT 542 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 6 MILES EAST OF ROSE...OR 28 MILES SOUTH OF
  BASSETT...AND MOVING NORTHEAST AT 50 MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  BROWN LAKE AROUND 555 PM CDT.
  PONY LAKE AROUND 600 PM CDT.

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 4245 9935 4229 9901 4209 9935 4219 9955
TIME...MOT...LOC 2246Z 209DEG 42KT 4223 9939

$$

TAYLOR

1 follow-up statement

471 
WWUS53 KLBF 302314
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
614 PM CDT MON MAY 30 2011

NEC089-149-302325-
/O.EXP.KLBF.TO.W.0009.000000T0000Z-110530T2315Z/
HOLT NE-ROCK NE-
614 PM CDT MON MAY 30 2011

...THE TORNADO WARNING FOR SOUTHEASTERN ROCK AND WEST CENTRAL HOLT
COUNTIES HAS EXPIRED...

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.

LAT...LON 4245 9935 4229 9901 4209 9935 4219 9955
TIME...MOT...LOC 2315Z 209DEG 42KT 4252 9916

$$

TAYLOR

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 10:08 PM CDT	Severe Thunderstorm Warning	LBF	Holt	52 min
May 29, 10:59 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	30 min
May 30, 3:57 AM CDT	Wind Advisory	LBF	Blaine, Brown, Chase, Custer, Frontier, Garfield and 11 more	14 hr
May 30, 3:03 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha, Rock	42 min
May 30, 3:09 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer	36 min
May 30, 3:43 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown	47 min
May 30, 4:08 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	52 min
May 30, 4:18 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Logan	42 min
May 30, 4:28 PM CDT	Tornado Warning	LBF	Rock	32 min
May 30, 4:47 PM CDT	Tornado Warning	LBF	Holt, Rock	28 min
May 30, 4:55 PM CDT	Tornado Warning	LBF	Blaine	35 min
May 30, 5:01 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Logan	44 min
May 30, 5:03 PM CDT	Severe Thunderstorm Warning	LBF	Boyd	16 min
May 30, 5:10 PM CDT	Tornado Warning	LBF	Holt	35 min
May 30, 5:24 PM CDT	Tornado Warning	LBF	Brown, Loup, Rock	36 min
May 30, 5:33 PM CDT	Flash Flood Warning	LBF	Blaine	3 hr
May 30, 5:37 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Rock	38 min
May 30, 5:43 PM CDT	Tornado Warning	LBF	Boyd, Holt	32 min
May 30, 5:50 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer	40 min
May 30, 5:50 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant, Sheridan	40 min
May 30, 6:11 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	49 min
May 30, 6:17 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Loup, Rock	43 min
May 30, 6:22 PM CDT	High Wind Warning	LBF	Chase, Frontier, Hayes, Keith, Lincoln, Logan and 2 more	98 min
May 30, 6:25 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Sheridan	50 min
May 30, 6:33 PM CDT	Severe Thunderstorm Warning	LBF	Custer	42 min
May 30, 6:40 PM CDT	Tornado Warning	LBF	Holt	35 min
May 30, 6:54 PM CDT	Tornado Warning	LBF	Boyd, Holt	21 min
May 30, 6:56 PM CDT	Severe Thunderstorm Warning	LBF	Loup	49 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.