Alert archive / Louisiana / Tornado Warnings in 2012
Tornado Warning 12, NWS Shreveport, LA
NWS Shreveport, LA issued this tornado warning at Mar 20, 2012, 9:03 PM CDT for Natchitoches Parish, Louisiana. It was in force for 27 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
- Mar 20, 2012, 9:03 PM CDT (02:03 UTC)
- Expired
- Mar 20, 2012, 9:30 PM CDT
- In force
- 27 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
County Natchitoches Parish, LA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 20, 9:29 PM CDT | TORNADO | 2 E Natchitoches, LA | AN EF0 TORNADO TOUCHED DOWN NEAR THE CEDAR GROVE MOBILE HOME PARK. A TREE WAS SNAPPED ALONG HWY. 484 LEADING EAST INTO THE MOBILE HOME PARK. 3 HOMES SUSTAINED DAMAGE WITH ONE SUSTAINING MODERATE ROOF DAMAGE. DEBRIS WAS SCATTERED EAST AS THE TORNADO CROSSED A F |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 2.1 hours before the alert went out and 296 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
- 267 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1256 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
695 WFUS54 KSHV 210203 TORSHV LAC069-210230- /O.NEW.KSHV.TO.W.0012.120321T0203Z-120321T0230Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 903 PM CDT TUE MAR 20 2012 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A * TORNADO WARNING FOR... CENTRAL NATCHITOCHES PARISH IN NORTHWEST LOUISIANA... THIS INCLUDES THE CITY OF NATCHITOCHES... * UNTIL 930 PM CDT * AT 903 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES SOUTH OF NATCHITOCHES...MOVING NORTH AT 35 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NATCHEZ...GRAND ECORE...CLARENCE AND POWHATAN. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3188 9322 3182 9295 3155 9311 3158 9321 TIME...MOT...LOC 0203Z 193DEG 28KT 3165 9313 $$ 13
2 follow-up statements
625 WWUS54 KSHV 210212 SVSSHV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 912 PM CDT TUE MAR 20 2012 LAC069-210230- /O.CON.KSHV.TO.W.0012.000000T0000Z-120321T0230Z/ NATCHITOCHES LA- 912 PM CDT TUE MAR 20 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR NATCHITOCHES PARISH... AT 911 PM CDT...A TORNADO WAS REPORTED. THIS TORNADO WAS LOCATED NEAR NATCHITOCHES...MOVING NORTH NORTHEAST AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GRAND ECORE...CLARENCE AND POWHATAN. IF YOU LIVE IN NATCHITOCHES...TAKE COVER IMMEDIATELY. PRECAUTIONARY/PREPAREDNESS ACTIONS... HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE. && LAT...LON 3188 9322 3182 9295 3165 9305 3168 9321 TIME...MOT...LOC 0211Z 193DEG 28KT 3173 9312 $$ 13
925 WWUS54 KSHV 210221 SVSSHV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 921 PM CDT TUE MAR 20 2012 LAC069-210230- /O.CON.KSHV.TO.W.0012.000000T0000Z-120321T0230Z/ NATCHITOCHES LA- 921 PM CDT TUE MAR 20 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR NATCHITOCHES PARISH... AT 921 PM CDT...A TORNADO WAS REPORTED. THIS TORNADO WAS LOCATED ON THE NORTHWEST SIDE OF NATCHITOCHES...MOVING NORTH AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GRAND ECORE...CLARENCE AND POWHATAN PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3188 9322 3182 9295 3175 9308 3177 9319 TIME...MOT...LOC 0221Z 193DEG 28KT 3182 9313 $$ 13
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 8:55 PM CDT | Flash Flood Warning | SHV | Grant, Natchitoches, Sabine, Winn | 10 hr |
| Mar 20, 9:02 PM CDT | River Flood Warning | SHV | Bienville, Bossier, Red River, Webster | 11 days |
| Mar 20, 9:15 PM CDT | Flash Flood Warning | SHV | Bienville, De Soto, Red River | 9 hr |
| Mar 20, 9:24 PM CDT | Tornado Warning | SHV | Natchitoches | 36 min |
| Mar 20, 10:20 PM CDT | Tornado Warning | SHV | Grant, Natchitoches | 40 min |
| Mar 20, 10:50 PM CDT | Flash Flood Warning | SHV | Bossier, Claiborne, Webster | 10 hr |
| Mar 21, 1:52 AM CDT | Flash Flood Warning | SHV | Bienville, Jackson, Lincoln, Union | 8 hr |
| Mar 21, 2:49 AM CDT | Tornado Warning | SHV | Grant, Winn | 26 min |
| Mar 21, 3:14 AM CDT | Tornado Warning | SHV | Jackson, Winn | 46 min |
| Mar 21, 5:41 AM CDT | Tornado Warning | SHV | Jackson, Winn | 34 min |
| Mar 21, 6:16 AM CDT | Flash Flood Warning | SHV | Bienville, Red River | 3 hr |
| Mar 21, 6:47 AM CDT | Flash Flood Warning | SHV | Grant, Natchitoches, Red River, Sabine, Winn | 4 hr |
| Mar 21, 8:44 AM CDT | Flash Flood Warning | SHV | Claiborne | 2 hr |
| Mar 21, 9:36 AM CDT | Flash Flood Warning | SHV | Union | 114 min |
| Mar 21, 10:51 AM CDT | Flash Flood Warning | SHV | Grant, Natchitoches, Winn | 3 hr |
| Mar 21, 1:53 PM CDT | Areal Flood Warning | SHV | Natchitoches | 6 hr |
Nearby
Tornado Warnings in Louisiana, 2012Every tornado warning in 2012Tornadoes in 2012
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.