Alert archive / Nebraska / Tornado Warnings in 2007

Tornado Warning 79, NWS North Platte, NE

August 3, 2007Cherry County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 3, 2007, 2:23 PM MDT for Cherry County, Nebraska. It was in force for 37 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: Aug 3, 2007, 2:23 PM MDT (20:23 UTC)
Expired: Aug 3, 2007, 3:00 PM MDT
In force: 37 min
Issued by: NWS North Platte, NE
Area: Counties, with a storm outline in the text

County Cherry County, NE

The radar

The North Platte radar (KLNX), 117 km from the middle of the area, began a volume at 20:25 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
Aug 3, 2:17 PM MDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.4 hours before the alert went out and 171 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 032027
TORLBF
NEC031-032100-
/O.NEW.KLBF.TO.W.0079.070803T2023Z-070803T2100Z/

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL CHERRY COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 300 PM MDT

* AT 219 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN NORTH    
  PLATTE INDICATED A POSSIBLE TORNADO 12 MILES WEST OF DIPPING VAT
  MEADOW...OR ABOUT 37 MILES SOUTHEAST OF RUSHVILLE...MOVING EAST AT
  25 MPH.

* THE TORNADO WILL BE NEAR...
  DIPPING VAT MEADOW BY 245 PM MDT...
  6 MILES WEST OF INTERSECTION OF HIGHWAY 61 AND SURVEY VALLEY ROAD
  BY 300 PM MDT...

AT 322 PM HEAVY RAIN MIXED WITH QUARTER SIZED HAIL WAS REPORTED 15
MILES NNE ELLSWORTH.

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.

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 4244 10195 4252 10182 4253 10177 4224 10161
      4217 10192 4217 10197 4216 10199 4216 10203
      4241 10204

$$

HIRSCH

2 follow-up statements

000 
WWUS53 KLBF 032047
SVSLBF

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

NEC031-032100-
/O.CON.KLBF.TO.W.0079.000000T0000Z-070803T2100Z/
CHERRY NE-
245 PM MDT FRI AUG 3 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 PM MDT FOR WEST
CENTRAL CHERRY COUNTY...

AT 241 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
TORNADO LOCATED NEAR DIPPING VAT MEADOW...OR ABOUT 41 MILES SOUTH OF 
GORDON...MOVING EAST AT 25 MPH.  THIS STORM WAS MOVING TOWARD THE 
MIDDLE LOUP RIVER NEAR HIGHWAY 61.  

THE TORNADO WILL BE NEAR...
  6 MILES SOUTH OF INTERSECTION OF HIGHWAY 61 AND SURVEY VALLEY ROAD
  BY 300 PM MDT...

THIS STORM HAS HAD A HISTORY OF PRODUCING LARGE HAIL. AT 322 PM 
HEAVY RAIN MIXED WITH QUARTER SIZED HAIL WAS REPORTED 15 MILES NNE 
OF ELLSWORTH.

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

LAT...LON 4244 10195 4252 10182 4253 10177 4224 10161
      4217 10192 4217 10197 4216 10199 4216 10203
      4241 10204

$$

HIRSCH

000 
WWUS53 KLBF 032101
SVSLBF

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

NEC031-032108-
/O.EXP.KLBF.TO.W.0079.000000T0000Z-070803T2100Z/
CHERRY NE-
258 PM MDT FRI AUG 3 2007

...THE TORNADO WARNING FOR WEST CENTRAL CHERRY COUNTY EXPIRES AT 300
PM MDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED TO BELOW SEVERE 
LIMITS AT THIS TIME.  

THIS REMAINS A STRONG STORM CAPABLE OF PRODUCING SMALL HAIL AND VERY 
HEAVY RAINS...AND DEADLY LIGHTNING THROUGH 330 PM OR 4 PM MDT.  

THIS STORM WILL CONTINUE TO BE MONITORED FOR SEVERE ACTIVITY BY THE 
NATIONAL WEATHER SERVICE. A TORNADO WATCH REMAINS IN EFFECT UNTIL 
1000 PM MDT FRIDAY EVENING FOR NORTHWESTERN NEBRASKA.

LAT...LON 4244 10195 4252 10182 4253 10177 4224 10161
      4217 10192 4217 10197 4216 10199 4216 10203
      4241 10204

$$

HIRSCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 1:53 PM MDT	Tornado Warning	LBF	Sheridan	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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.