Alert archive / Nebraska / Tornado Warnings in 2015

Tornado Warning 11, NWS North Platte, NE

July 26, 2015Brown County, Rock County, Nebraska

NWS North Platte, NE issued this tornado warning at Jul 26, 2015, 7:49 PM CDT for Brown County, Rock County, Nebraska. It was in force for 26 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 26, 2015, 7:49 PM CDT (00:49 UTC)
Expired: Jul 26, 2015, 8:15 PM CDT
In force: 26 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.5 in

Counties Brown County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 88 km from the middle of the area, began a volume at 00:53 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 26, 7:55 PM CDT	HAIL 1	S Ainsworth, NE
Jul 26, 8:05 PM CDT	TORNADO	5 Ssw Long Pine, NE	CONFIRMED TORNADO TOUCHDOWN SPOTTED BY PUBLIC RELAYED FROM LOCAL FIRE DEPARTMENT.

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 00:00Z, 0.8 hours before the alert went out and 164 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: 2433 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1791 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

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

582 
WFUS53 KLBF 270049
TORLBF
NEC017-149-270115-
/O.NEW.KLBF.TO.W.0011.150727T0049Z-150727T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
749 PM CDT SUN JUL 26 2015

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE  HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL ROCK COUNTY IN NORTH CENTRAL NEBRASKA...
  EAST CENTRAL BROWN COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 815 PM CDT
    
* AT 749 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR AINSWORTH...MOVING SOUTHEAST AT 25 MPH.

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

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  WEST CENTRAL ROCK AND EAST CENTRAL BROWN COUNTIES...INCLUDING THE
  FOLLOWING LOCATIONS...JOHNSONS CORNER AND JONES LAKE.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 183 BETWEEN MILE MARKERS 168 AND 172...AND BETWEEN MILE
MARKERS 194 AND 195.
 HIGHWAY 20 BETWEEN MILE MARKERS 242 AND 249.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4255 9988 4258 9976 4240 9948 4221 9974
TIME...MOT...LOC 0049Z 326DEG 22KT 4247 9979 

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

$$

JACOBS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 7:05 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha	25 min
Jul 26, 7:11 PM CDT	Special Weather Statement	LBF	Hayes, Lincoln	64 min
Jul 26, 7:14 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	31 min
Jul 26, 7:19 PM CDT	Special Weather Statement	LBF	Thomas	41 min
Jul 26, 7:32 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	43 min
Jul 26, 7:44 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Keya Paha, Rock	46 min
Jul 26, 8:16 PM CDT	Special Weather Statement	LBF	Frontier, Hayes, Lincoln, Logan	44 min
Jul 26, 8:17 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	43 min
Jul 26, 8:32 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	43 min
Jul 26, 8:35 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt, Keya Paha, Rock	40 min
Jul 26, 9:15 PM CDT	Special Weather Statement	LBF	Custer	45 min
Jul 26, 9:28 PM CDT	Special Weather Statement	LBF	Rock	47 min
Jul 26, 9:55 PM CDT	Special Weather Statement	LBF	Holt	50 min
Jul 26, 10:30 PM CDT	Special Weather Statement	LBF	Loup	45 min
Jul 26, 10:57 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt, Loup, Rock	48 min

Nearby

Tornado Warnings in Nebraska, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.