Alert archive / Nebraska / Tornado Warnings in 2007
Tornado Warning 19, NWS North Platte, NE
NWS North Platte, NE issued this tornado warning at Apr 20, 2007, 10:26 PM CDT for Custer County, Nebraska. It was in force for 34 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
- Apr 20, 2007, 10:26 PM CDT (03:26 UTC)
- Expired
- Apr 20, 2007, 11:00 PM CDT
- In force
- 34 min
- Issued by
- NWS North Platte, NE
- Area
- Counties, with a storm outline in the text
County Custer County, NE
The radar
The North Platte radar (KLNX), 98 km from the middle of the area, began a volume at 03:29 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 |
|---|---|---|---|
| Apr 20, 10:30 PM CDT | HAIL 1.75 | 8 W Callaway, NE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 20, 8:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.4 hours before the alert went out and 41 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.
- Mixed-layer CAPE
- 333 J/kg
- Mixed-layer CIN
- -161 J/kg
- Mixed-layer LCL
- 1187 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KLBF 210327 TORLBF NEC041-210400- /O.NEW.KLBF.TO.W.0019.070421T0326Z-070421T0400Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 1026 PM CDT FRI APR 20 2007 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * TORNADO WARNING FOR... SOUTHWESTERN CUSTER COUNTY IN CENTRAL NEBRASKA... * UNTIL 1100 PM CDT * AT 1025 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A TORNADO 12 MILES SOUTH OF HIGHWAY 47 MILE MARKER 80...OR ABOUT 28 MILES NORTHWEST OF LEXINGTON...MOVING NORTH AT 20 MPH. * THE TORNADO WILL BE NEAR... HIGHWAY 47 MILE MARKER 80 BY 1055 PM CDT... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. 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 4106 10022 4105 10001 4125 9991 4133 10021 $$ JMC
1 follow-up statement
000 WWUS53 KLBF 210341 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 1040 PM CDT FRI APR 20 2007 NEC041-210400- /O.CON.KLBF.TO.W.0019.000000T0000Z-070421T0400Z/ CUSTER NE- 1040 PM CDT FRI APR 20 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR SOUTHWESTERN CUSTER COUNTY... AT 1038 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR AND STORM SPOTTERS WERE TRACKING A LARGE TORNADO. THIS TORNADO WAS LOCATED NEAR HIGHWAY 47 MILE MARKER 80...OR ABOUT 22 MILES SOUTH OF ARNOLD...MOVING NORTH AT 20 MPH. THE TORNADO WILL BE NEAR... HIGHWAY 47 MILE MARKER 80 BY 1050 PM CDT... 7 MILES SOUTHWEST OF HIGHWAY 40 MILE MARKER 20 AND 7 MILES SOUTHEAST OF HIGHWAY 40 MILE MARKER 10 BY 1100 PM CDT... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 2 INCH DIAMETER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4106 10022 4105 10001 4125 9991 4133 10021 $$ JMC
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 7:36 PM CDT | Severe Thunderstorm Warning | LBF | Hayes, Lincoln | 54 min |
| Apr 20, 8:23 PM CDT | Severe Thunderstorm Warning | LBF | Frontier, Lincoln | 67 min |
| Apr 20, 9:11 PM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 64 min |
| Apr 20, 9:23 PM CDT | Tornado Warning | LBF | Frontier, Lincoln | 37 min |
| Apr 20, 9:50 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 40 min |
| Apr 20, 9:53 PM CDT | Tornado Warning | LBF | Lincoln | 37 min |
| Apr 20, 10:00 PM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 30 min |
| Apr 20, 10:19 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 26 min |
| Apr 20, 10:30 PM CDT | Severe Thunderstorm Warning | LBF | McPherson | 45 min |
| Apr 20, 10:52 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 53 min |
| Apr 20, 10:57 PM CDT | Tornado Warning | LBF | Custer | 48 min |
| Apr 20, 11:07 PM CDT | Severe Thunderstorm Warning | LBF | Logan, McPherson, Thomas | 53 min |
| Apr 20, 11:12 PM CDT | Severe Thunderstorm Warning | LBF | Hooker | 33 min |
| Apr 20, 11:27 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 63 min |
| Apr 20, 11:35 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 55 min |
| Apr 21, 12:03 AM CDT | Severe Thunderstorm Warning | LBF | Custer | 27 min |
| Apr 21, 12:27 AM CDT | Tornado Warning | LBF | Cherry | 33 min |
| Apr 21, 12:58 AM CDT | Severe Thunderstorm Warning | LBF | Garfield | 47 min |
| Apr 21, 3:54 AM CDT | Wind Advisory | LBF | Blaine, Boyd, Brown, Chase, Custer, Frontier and 13 more | 9 hr |
| Apr 21, 4:55 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 50 min |
| Apr 21, 4:59 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 46 min |
| Apr 21, 5:34 PM CDT | Tornado Warning | LBF | Cherry | 26 min |
| Apr 21, 5:35 PM CDT | Tornado Warning | LBF | Cherry | 25 min |
| Apr 21, 5:39 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Keya Paha | 51 min |
| Apr 21, 5:40 PM CDT | Severe Thunderstorm Warning | LBF | Deuel | 50 min |
| Apr 21, 5:57 PM CDT | Tornado Warning | LBF | Garden, Sheridan | 33 min |
| Apr 21, 5:59 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 31 min |
| Apr 21, 6:00 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 60 min |
| Apr 21, 6:10 PM CDT | Severe Thunderstorm Warning | LBF | Garden | 35 min |
| Apr 21, 6:26 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Keya Paha | 64 min |
| Apr 21, 6:27 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 48 min |
| Apr 21, 6:27 PM CDT | Tornado Warning | LBF | Garden, Sheridan | 33 min |
| Apr 21, 6:28 PM CDT | Severe Thunderstorm Warning | LBF | Deuel | 32 min |
| Apr 21, 6:35 PM CDT | Severe Thunderstorm Warning | LBF | Arthur | 25 min |
| Apr 21, 6:53 PM CDT | Severe Thunderstorm Warning | LBF | Grant | 52 min |
| Apr 21, 6:57 PM CDT | Severe Thunderstorm Warning | LBF | Deuel, Garden, Keith | 63 min |
Nearby
Tornado Warnings in Nebraska, 2007Every tornado warning in 2007Tornadoes 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.