Alert archive / Nebraska / Tornado Warnings in 2007
Tornado Warning 44, NWS North Platte, NE
NWS North Platte, NE issued this tornado warning at May 21, 2007, 8:18 PM MDT for Keith County, Nebraska. It was in force for 42 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
- May 21, 2007, 8:18 PM MDT (02:18 UTC)
- Expired
- May 21, 2007, 9:00 PM MDT
- In force
- 42 min
- Issued by
- NWS North Platte, NE
- Area
- Counties, with a storm outline in the text
County Keith County, NE
The radar
The North Platte radar (KLNX), 140 km from the middle of the area, began a volume at 02:20 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 |
|---|---|---|---|
| May 21, 8:40 PM MDT | TORNADO | 2 S Brule, NE | TORNADO DISSIPATED JUST SOUTH OF BRULE INTERCHANGE |
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, 2.3 hours before the alert went out and 106 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
- 851 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 1498 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KLBF 220218 TORLBF NEC101-220300- /O.NEW.KLBF.TO.W.0044.070522T0218Z-070522T0300Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 818 PM MDT MON MAY 21 2007 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * TORNADO WARNING FOR... WESTERN KEITH COUNTY IN SOUTHWEST NEBRASKA... THIS INCLUDES THE CITY OF OGALLALA... * UNTIL 900 PM MDT * AT 815 PM MDT...THE PUBLIC REPORTED A TORNADO NEAR BRULE...OR ABOUT 6 MILES EAST OF BIG SPRINGS...MOVING EAST AT 25 MPH. * THE TORNADO WILL BE NEAR... BRULE BY 825 PM MDT... OGALLALA BY 845 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 4101 10203 4101 10161 4138 10163 4136 10203 $$ BUTTLER
2 follow-up statements
000 WWUS53 KLBF 220240 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 937 PM CDT MON MAY 21 2007 NEC101-220300- /O.CON.KLBF.TO.W.0044.000000T0000Z-070522T0300Z/ KEITH NE- 837 PM MDT MON MAY 21 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM MDT FOR WESTERN KEITH COUNTY... AT 835 PM MDT...THE PUBLIC REPORTED A TORNADO JUST SOUTH OF THE BRULE INTERCHANGE OR NEAR MILE MARKER 110 ON INTERSTATE 80...MOVING EAST AT 15 MPH. THE TORNADO WILL BE NEAR... 6 MILES NORTH OF HIGHWAY 61 MILE MARKER 80 BY 845 PM MDT... OGALLALA BY 855 PM MDT... 7 MILES SOUTH OF KINGSLEY DAM BY 900 PM MDT... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4101 10203 4101 10161 4138 10163 4136 10203 $$ BUTTLER
000 WWUS53 KLBF 220258 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 955 PM CDT MON MAY 21 2007 NEC101-220305- /O.EXP.KLBF.TO.W.0044.000000T0000Z-070522T0300Z/ KEITH NE- 855 PM MDT MON MAY 21 2007 ...THE TORNADO WARNING FOR WESTERN KEITH COUNTY EXPIRES AT 900 PM MDT... THE THUNDERSTORMS RESPONSIBLE FOR THE TORNADO WARNING HAVE MOVED INTO EASTERN PORTIONS OF KEITH COUNTY AND NO LONGER POSED A TORNADO THREAT TO WESTERN KEITH COUNTY. OCCASIONAL THUNDERSTORMS...WITH GUSTY WINDS SMALL HAIL AND FREQUENT LIGHTNING WILL CONTINUE INTO THE EARLY MORNING HOURS. AT THIS TIME...NO ADDITIONAL SEVERE WEATHER IS EXPECTED. IF SEVERE WEATHER WAS OBSERVED...CONTACT LOCAL LAW ENFORCEMENT AND HAVE THEM PASS THE REPORT TO THE NATIONAL WEATHER SERVICE IN NORTH PLATTE. LAT...LON 4101 10203 4101 10161 4138 10163 4136 10203 $$ BUTTLER
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 8:22 PM MDT | Severe Thunderstorm Warning | LBF | Arthur | 23 min |
| May 21, 8:43 PM MDT | Severe Thunderstorm Warning | LBF | Arthur | 47 min |
| May 21, 9:16 PM MDT | Severe Thunderstorm Warning | LBF | Chase | 44 min |
| May 22, 4:15 PM MDT | Severe Thunderstorm Warning | LBF | Frontier | 45 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.