Alert archive / Louisiana / Tornado Warnings in 2011

Tornado Warning 32, NWS Jackson, MS

April 4, 2011Catahoula Parish, Franklin Parish, Louisiana

NWS Jackson, MS issued this tornado warning at Apr 4, 2011, 3:02 PM CDT for Catahoula Parish, Franklin Parish, Louisiana. It was in force for 58 min. 5 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: Apr 4, 2011, 3:02 PM CDT (20:02 UTC)
Expired: Apr 4, 2011, 4:00 PM CDT
In force: 58 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Catahoula Parish, LA, Franklin Parish, LA

What was reported inside it

Time	Report	Where	Remark
Apr 4, 3:09 PM CDT	TSTM WND DMG	4 Wsw Enterprise, LA	A FEW TREES WERE BLOWN DOWN...POSSIBLE TORNADO.
Apr 4, 3:09 PM CDT	TORNADO 2	4 Wsw Enterprise, LA	UPDATE...EF-2 FOUND 4WSW ENTERPRISE WITH 115 MPH MAX WINDS. NUMEROUS TREES UPROOTED AND SNAPPED. FOUR POWER POLES WERE SNAPPED. MORE INFORMATION WILL BE AVAILABLE AFTER COORDINATION WITH WFO SHREVEPORT.
Apr 4, 3:20 PM CDT	TSTM WND DMG	2 N Harrisonburg, LA	TREE DOWN ACROSS HWY 124
Apr 4, 3:30 PM CDT	TSTM WND DMG	Sicily Island, LA	TREES AND POWERLINES DOWN. ONE LARGE TREE DOWN ON A HOUSE.
Apr 4, 3:40 PM CDT	TSTM WND DMG	6 W Wisner, LA	LARGE TREE DOWNED IN OLIVE GROVE COMMUNITY OFF HIGHWAY 562.

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
Apr 4, 10:53 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.0 hours before the alert went out and 156 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1411 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 425 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

009 
WFUS54 KJAN 042002
TORJAN
LAC025-041-042100-
/O.NEW.KJAN.TO.W.0032.110404T2002Z-110404T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
302 PM CDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CATAHOULA PARISH IN NORTHEAST LOUISIANA...
  SOUTHERN FRANKLIN PARISH IN NORTHEAST LOUISIANA...

* UNTIL 400 PM CDT

* AT 302 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHWEST OF ROSEFIELD MOVING NORTHEAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SHERWOOD...ENTERPRISE...JIGGER AND WISNER

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 600 PM CDT MONDAY EVENING FOR
SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3194 9200 3194 9191 3198 9189 3203 9189
      3219 9149 3211 9150 3208 9149 3204 9151
      3200 9149 3198 9151 3192 9151 3190 9156
      3182 9156 3175 9201
TIME...MOT...LOC 2002Z 247DEG 50KT 3186 9204

$$

OLB

2 follow-up statements

435 
WWUS54 KJAN 042008 RRA
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
308 PM CDT MON APR 4 2011

LAC025-041-042100-
/O.CON.KJAN.TO.W.0032.000000T0000Z-110404T2100Z/
CATAHOULA LA-FRANKLIN LA-
308 PM CDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR SOUTHERN
FRANKLIN AND NORTHERN CATAHOULA PARISHES...

AT 308 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR ROSEFIELD MOVING NORTHEAST AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ENTERPRISE...SICILY ISLAND...JIGGER...WISNER AND GILBERT

SIGNIFCANT DAMAGE HAS BEEN REPORTED WITH THIS STORM OVER GRANT AND
LASALLE PARISHES. PEOPLE IN THE PATH OF THIS STORM ACROSS NORTHERN
CATAHOULA PARISH SHOULD MOVE TO SAFETY IMMEDIATELY!

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 600 PM CDT MONDAY EVENING FOR
SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3194 9200 3194 9191 3198 9189 3203 9189
      3219 9149 3211 9150 3208 9149 3204 9151
      3200 9149 3198 9151 3192 9151 3190 9156
      3182 9156 3175 9201
TIME...MOT...LOC 2008Z 247DEG 50KT 3187 9193

$$

AEG

908 
WWUS54 KJAN 042032
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
332 PM CDT MON APR 4 2011

LAC025-041-042100-
/O.CON.KJAN.TO.W.0032.000000T0000Z-110404T2100Z/
CATAHOULA LA-FRANKLIN LA-
332 PM CDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR SOUTHERN
FRANKLIN AND NORTHEASTERN CATAHOULA PARISHES...

AT 332 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO
TRACK A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS LOCATED 8 MILES WEST OF SICILY ISLAND MOVING EAST AT 30
MPH.

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.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. SIGNIFICANT
DAMAGE HAS BEEN REPORTED OVER PARTS OF GRANT AND LASALLE PARISHES.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CDT MONDAY EVENING FOR
SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3181 9191 3191 9184 3203 9189 3219 9149
      3215 9150 3208 9149 3204 9151 3192 9151
      3192 9153 3190 9156 3188 9157 3182 9156
TIME...MOT...LOC 2032Z 254DEG 26KT 3189 9178

$$

AEG

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 4, 12:05 AM CDT	Wind Advisory	JAN	Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more	22 hr
Apr 4, 10:46 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse	59 min
Apr 4, 11:46 AM CDT	Severe Thunderstorm Warning	JAN	Morehouse	44 min
Apr 4, 1:05 PM CDT	Special Weather Statement	JAN	West Carroll	25 min
Apr 4, 1:57 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse	48 min
Apr 4, 2:28 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Morehouse, West Carroll	47 min
Apr 4, 2:43 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Richland	62 min
Apr 4, 2:56 PM CDT	Severe Thunderstorm Warning	JAN	Madison	33 min
Apr 4, 3:15 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, West Carroll	35 min
Apr 4, 3:26 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia	49 min
Apr 4, 3:35 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Madison	55 min
Apr 4, 3:43 PM CDT	Tornado Warning	JAN	Tensas	48 min
Apr 4, 3:54 PM CDT	Severe Thunderstorm Warning	JAN	Madison	51 min
Apr 4, 3:58 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia	62 min

Nearby

Tornado Warnings in Louisiana, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.