Alert archive / Louisiana / Tornado Warnings in 2012
Tornado Warning 28, NWS Jackson, MS
NWS Jackson, MS issued this tornado warning at Mar 21, 2012, 9:03 AM CDT for Catahoula Parish, Franklin Parish, Louisiana. 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
- Mar 21, 2012, 9:03 AM CDT (14:03 UTC)
- Expired
- Mar 21, 2012, 9:45 AM CDT
- In force
- 42 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
Counties Catahoula Parish, LA, Franklin Parish, LA
The radar
The Jackson/Brandon,MS radar (KDGX), 151 km from the middle of the area, began a volume at 14:03 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 |
|---|---|---|---|
| Mar 21, 9:15 AM CDT | TSTM WND DMG | 3 Nw Sicily Island, LA | TREES DOWNED ALONG HIGHWAY 913 |
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 |
|---|---|---|---|
| Mar 21, 5:04 AM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 2.1 hours before the alert went out and 143 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
- 143 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 559 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 239 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
719
WFUS54 KJAN 211403
TORJAN
LAC025-041-211500-
/O.NEW.KJAN.TO.W.0028.120321T1403Z-120321T1500Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
903 AM CDT WED MAR 21 2012
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN CATAHOULA PARISH IN NORTHEAST LOUISIANA...
FRANKLIN PARISH IN NORTHEAST LOUISIANA...
THIS INCLUDES THE CITY OF WINNSBORO...
* UNTIL 1000 AM CDT
* AT 903 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 12 MILES WEST OF
LEE BAYOU MOVING NORTH AT 50 MPH.
* THE TORNADO WILL BE NEAR...
WISNER AND JIGGER BY 920 AM CDT...
WINNSBORO BY 930 AM CDT...
CROWVILLE BY 940 AM CDT...
BAKERS BY 950 AM CDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WARNING MEANS THAT A TORNADO IS OCCURRING OR IMMINENT. YOU
SHOULD ACTIVATE YOUR TORNADO ACTION PLAN AND TAKE PROTECTIVE ACTION
NOW.
A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CDT WEDNESDAY FOR
NORTHEAST LOUISIANA AND SOUTHWESTERN MISSISSIPPI.
&&
LAT...LON 3240 9164 3240 9149 3236 9145 3235 9150
3232 9147 3230 9153 3225 9152 3225 9155
3223 9151 3221 9155 3220 9149 3196 9153
3193 9151 3187 9158 3173 9154 3176 9159
3173 9163 3175 9169 3168 9171 3174 9189
TIME...MOT...LOC 1403Z 198DEG 43KT 3182 9175
$$
191 follow-up statement
064
WWUS54 KJAN 211445
SVSJAN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
945 AM CDT WED MAR 21 2012
LAC025-041-211455-
/O.CAN.KJAN.TO.W.0028.000000T0000Z-120321T1500Z/
FRANKLIN LA-CATAHOULA LA-
945 AM CDT WED MAR 21 2012
...THE TORNADO WARNING FOR NORTHEASTERN CATAHOULA AND FRANKLIN
PARISHES IS CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CDT WEDNESDAY FOR
NORTHEAST LOUISIANA AND SOUTHWESTERN MISSISSIPPI.
LAT...LON 3240 9164 3240 9149 3236 9145 3235 9150
3232 9147 3230 9153 3225 9152 3225 9155
3223 9151 3221 9155 3220 9149 3196 9153
3193 9151 3187 9158 3173 9154 3176 9159
3173 9163 3175 9169 3168 9171 3174 9189
TIME...MOT...LOC 1445Z 198DEG 43KT 3230 9157
$$
19The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 7:27 AM CDT | Special Weather Statement | JAN | Catahoula | 28 min |
| Mar 21, 7:29 AM CDT | Tornado Warning | JAN | Catahoula, Concordia | 46 min |
| Mar 21, 8:42 AM CDT | Special Weather Statement | JAN | Catahoula | 28 min |
| Mar 21, 9:38 AM CDT | Severe Thunderstorm Warning | JAN | Richland | 41 min |
| Mar 21, 9:49 AM CDT | Flash Flood Warning | JAN | Franklin, Richland | 116 min |
| Mar 21, 9:51 AM CDT | Special Weather Statement | JAN | Tensas | 44 min |
| Mar 21, 10:20 AM CDT | Areal Flood Warning | JAN | Concordia | 3 hr |
| Mar 21, 10:48 AM CDT | Severe Thunderstorm Warning | JAN | Madison | 57 min |
| Mar 21, 12:47 PM CDT | Areal Flood Warning | JAN | East Carroll, Franklin, Madison, Morehouse, Richland, West Carroll | 12 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; radar from the NEXRAD Level II archive.