Alert archive / Missouri / Tornado Warnings in 2007
Tornado Warning 13, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Aug 8, 2007, 4:06 PM CDT for Knox County, Missouri. It was in force for 24 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
- Aug 8, 2007, 4:06 PM CDT (21:06 UTC)
- Expired
- Aug 8, 2007, 4:30 PM CDT
- In force
- 24 min
- Issued by
- NWS St. Louis, MO
- Area
- Counties, with a storm outline in the text
County Knox County, MO
The radar
The St Louis radar (KLSX), 200 km from the middle of the area, began a volume at 21:09 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 8, 4:15 PM CDT | HAIL 0.88 | Knox City, MO | NICKEL SIZE HAIL FOR ABOUT 5 MINUTES IN KNOX CITY. |
| Aug 8, 4:25 PM CDT | HAIL 1 | 3 N Knox City, MO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 9.1 hours before the alert went out and 213 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1214 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 16 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 KLSX 082107 TORLSX MOC103-082130- /O.NEW.KLSX.TO.W.0013.070808T2106Z-070808T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 406 PM CDT WED AUG 8 2007 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... KNOX COUNTY IN NORTHEAST MISSOURI * UNTIL 430 PM CDT * AT 405 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 5 MILES SOUTHEAST OF EDINA...MOVING SOUTHEAST AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... KNOX CITY... 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. LAT...LON 4017 9195 3995 9197 4010 9234 4027 9224 $$ CVKING
2 follow-up statements
000 WWUS53 KLSX 082116 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 416 PM CDT WED AUG 8 2007 MOC103-082130- /O.CON.KLSX.TO.W.0013.000000T0000Z-070808T2130Z/ KNOX MO- 416 PM CDT WED AUG 8 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR EASTERN KNOX COUNTY... AT 413 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR KNOX CITY...OR ABOUT 7 MILES SOUTHEAST OF EDINA...MOVING EAST AT 20 MPH. LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE.... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING BASEBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4022 9195 4000 9196 4008 9217 4025 9206 $$ CVKING
000 WWUS53 KLSX 082134 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 434 PM CDT WED AUG 8 2007 MOC103-082144- /O.EXP.KLSX.TO.W.0013.000000T0000Z-070808T2130Z/ KNOX MO- 434 PM CDT WED AUG 8 2007 ...THE TORNADO WARNING FOR EASTERN KNOX COUNTY EXPIRES AT 430 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY. LAT...LON 4022 9195 4000 9196 4008 9217 4025 9206 $$ CVKING
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 3:41 PM CDT | Severe Thunderstorm Warning | LSX | Knox | 64 min |
| Aug 8, 4:12 PM CDT | Tornado Warning | LSX | Lewis | 63 min |
| Aug 8, 4:49 PM CDT | Tornado Warning | LSX | Marion | 71 min |
Nearby
Tornado Warnings in Missouri, 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.