Alert archive / Nebraska / Tornado Warnings in 2007

Tornado Warning 78, NWS North Platte, NE

August 3, 2007Sheridan County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 3, 2007, 1:53 PM MDT for Sheridan County, Nebraska. It was in force for 37 min. 1 report 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: Aug 3, 2007, 1:53 PM MDT (19:53 UTC)
Expired: Aug 3, 2007, 2:30 PM MDT
In force: 37 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Sheridan County, NE

The radar

The North Platte radar (KLNX), 134 km from the middle of the area, began a volume at 19:52 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
Aug 3, 2:22 PM MDT	HAIL 1	15 Nne Ellsworth, NE	COOPERATIVE OBSERVER REPORTS PEA TO QUARTER SIZE HAIL MIXED WITH HEAVY RAIN BUT VERY LITTLE WIND.

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 12:00Z, 7.9 hours before the alert went out and 177 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: 940 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 694 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLBF 031954
TORLBF
NEC161-032030-
/O.NEW.KLBF.TO.W.0078.070803T1953Z-070803T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
153 PM MDT FRI AUG 3 2007

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN SHERIDAN COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 230 PM MDT

* AT 152 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES
  NORTHWEST OF KENNEDY LAKE...OR ABOUT 27 MILES EAST OF ALLIANCE...
  MOVING EAST AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  6 MILES NORTH OF KENNEDY LAKE BY 200 PM MDT...
  WATSON LAKE AND 7 MILES SOUTH OF ARGO HILL BY 215 PM MDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4237 10207 4231 10207 4230 10205 4209 10205
      4208 10203 4204 10203 4206 10238 4221 10248
      4224 10248

$$

HIRSCH

2 follow-up statements

000 
WWUS53 KLBF 032016
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
314 PM CDT FRI AUG 3 2007

NEC161-032030-
/O.CON.KLBF.TO.W.0078.000000T0000Z-070803T2030Z/
SHERIDAN NE-
214 PM MDT FRI AUG 3 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR CENTRAL
SHERIDAN COUNTY...

AT 208 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HIGHWAY 27 MILE
MARKER 180...OR ABOUT 34 MILES EAST OF ALLIANCE...MOVING EAST AT 25
MPH.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT 
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

A SECOND THUNDERSTORM IS GROWING IN NORTHERN SHERIDAN COUNTY AND 
BEING MONITORED FOR WARNINGS.  THIS STORM IS JUST NORTH OF THE CITY 
OF GORDON...MOVING TO THE EAST AT 25 MPH.  

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT FRIDAY EVENING
FOR NORTHWESTERN NEBRASKA.

LAT...LON 4237 10207 4231 10207 4230 10205 4209 10205
      4208 10203 4204 10203 4206 10238 4221 10248
      4224 10248

$$

HIRSCH

000 
WWUS53 KLBF 032040
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
338 PM CDT FRI AUG 3 2007

NEC161-032048-
/O.EXP.KLBF.TO.W.0078.000000T0000Z-070803T2030Z/
SHERIDAN NE-
238 PM MDT FRI AUG 3 2007

...THE TORNADO WARNING FOR CENTRAL SHERIDAN COUNTY EXPIRED AT 230 PM
MDT...

THE THUNDERSTORM WHICH PROMPTED THE WARNING PRODUCED QUARTER SIZED 
HAIL AT 222 PM MDT.  

THIS STORM HAS SINCE EXITED THE COUNTY INTO CHERRY COUNTY.  A 
TORNADO WARNING REMAINS IN EFFECT FOR THIS STORM IN CHERRY 
COUNTY...BUT THE WARNING FOR SOUTHERN SHERIDAN COUNTY HAS BEEN 
ALLOWED TO EXPIRE.  

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT FRIDAY EVENING
FOR NORTHWESTERN NEBRASKA.

LAT...LON 4237 10207 4231 10207 4230 10205 4209 10205
      4208 10203 4204 10203 4206 10238 4221 10248
      4224 10248

$$

HIRSCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 2:23 PM MDT	Tornado Warning	LBF	Cherry	37 min
Aug 3, 4:00 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	45 min
Aug 3, 4:24 PM MDT	Severe Thunderstorm Warning	LBF	Cherry	18 min
Aug 3, 4:46 PM MDT	Tornado Warning	LBF	Cherry	59 min
Aug 3, 4:54 PM MDT	Severe Thunderstorm Warning	LBF	Grant	36 min
Aug 3, 5:06 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant	39 min
Aug 3, 5:43 PM MDT	Tornado Warning	LBF	Cherry	32 min
Aug 3, 5:57 PM MDT	Severe Thunderstorm Warning	LBF	Keya Paha	48 min

Nearby

Tornado Warnings in Nebraska, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.