Alert archive / Louisiana / Tornado Warnings in 2007
Tornado Warning 22, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Oct 17, 2007, 2:10 PM CDT for Bossier Parish, Webster Parish, Louisiana. It was in force for 50 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
- Oct 17, 2007, 2:10 PM CDT (19:10 UTC)
- Expired
- Oct 17, 2007, 3:00 PM CDT
- In force
- 50 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
Counties Bossier Parish, LA, Webster Parish, LA
The radar
The Shreveport radar (KSHV), 48 km from the middle of the area, began a volume at 19:09 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 |
|---|---|---|---|
| Oct 17, 2:30 PM CDT | HAIL 0.75 | Red Chute, LA |
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 |
|---|---|---|---|
| Oct 17, 11:13 AM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 7.2 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
- 865 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 477 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS54 KSHV 171910 TORSHV LAC015-119-172000- /O.NEW.KSHV.TO.W.0022.071017T1910Z-071017T2000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 210 PM CDT WED OCT 17 2007 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A * TORNADO WARNING FOR... BOSSIER PARISH IN NORTHWEST LOUISIANA... THIS INCLUDES THE CITY OF RED CHUTE... WEBSTER PARISH IN NORTHWEST LOUISIANA... * UNTIL 300 PM CDT * AT 204 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR RED CHUTE...MOVING NORTHEAST AT 30 MPH. * THE TORNADO WILL BE NEAR... COTTON VALLEY BY 240 PM CDT... SAREPTA BY 245 PM CDT... 9 MILES SOUTHEAST OF CULLEN BY 250 PM CDT... DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO SAFE STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT AND COVER YOUR HEAD. 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. LAT...LON 3300 9346 3277 9326 3251 9362 3265 9375 TIME...MOT...LOC 1910Z 224DEG 28KT 3264 9361 $$ VII
1 follow-up statement
000 WWUS54 KSHV 171939 SVSSHV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 239 PM CDT WED OCT 17 2007 LAC015-119-172000- /O.CON.KSHV.TO.W.0022.000000T0000Z-071017T2000Z/ BOSSIER LA-WEBSTER LA- 239 PM CDT WED OCT 17 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 PM CDT FOR WEBSTER AND BOSSIER PARISHES... AT 235 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR COTTON VALLEY...OR ABOUT 15 MILES SOUTH OF SPRINGHILL...MOVING NORTHEAST AT 30 MPH. THE TORNADO WILL BE NEAR... SAREPTA BY 245 PM CDT... 8 MILES SOUTHEAST OF CULLEN BY 255 PM CDT... IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 3300 9346 3277 9326 3251 9362 3265 9375 TIME...MOT...LOC 1939Z 224DEG 28KT 3281 9344 $$ VII
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 17, 2:04 PM CDT | Severe Thunderstorm Warning | SHV | Bossier, Webster | 41 min |
| Oct 17, 2:52 PM CDT | Tornado Warning | SHV | Claiborne, Webster | 38 min |
| Oct 17, 3:27 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne | 48 min |
| Oct 17, 6:33 PM CDT | Tornado Warning | SHV | De Soto, Natchitoches, Red River, Sabine | 42 min |
Nearby
Tornado Warnings in Louisiana, 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.