Alert archive / Louisiana / Tornado Warnings in 2017

Tornado Warning 17, NWS Jackson, MS

January 21, 2017Catahoula Parish, Concordia Parish, Louisiana

NWS Jackson, MS issued this tornado warning at Jan 21, 2017, 7:24 PM CST for Catahoula Parish, Concordia Parish, Louisiana. It was in force for 66 min. 4 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: Jan 21, 2017, 7:24 PM CST (01:24 UTC)
Expired: Jan 21, 2017, 8:30 PM CST
In force: 66 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 2.5 in

Counties Catahoula Parish, LA, Concordia Parish, LA

The radar

The Ft Polk radar (KPOE), 140 km from the middle of the area, began a volume at 01:25 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
Jan 21, 7:28 PM CST	HAIL 1.25	Archie, LA
Jan 21, 7:45 PM CST	HAIL 3	4 Sw Jonesville, LA	3.5 INCH HAIL ESTIMATED SOUTHWEST OF JONESVILLE JUST OFF OF HWY 84
Jan 21, 7:46 PM CST	HAIL 1.75	Jonesville, LA	GOLF BALL SIZE HAIL REPORTED IN JONESVILLE
Jan 21, 7:46 PM CST	HAIL 2.75	Jonesville, LA	GOLF BALL TO BASEBALL SIZE HAIL REPORTED IN JONESVILLE

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
Jan 21, 3:29 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 1.4 hours before the alert went out and 163 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: 1036 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 1052 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

251 
WFUS54 KJAN 220124
TORJAN
LAC025-029-220230-
/O.NEW.KJAN.TO.W.0017.170122T0124Z-170122T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
724 PM CST SAT JAN 21 2017

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Northwestern Concordia Parish in northeastern Louisiana...
  Central Catahoula Parish in northeastern Louisiana...

* Until 830 PM CST
    
* At 723 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Walters, or 13 miles north of Larto, moving
  northeast at 30 mph.

  HAZARD...Tornado and tennis ball size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Jonesville around 745 PM CST. 
  Wallace Ridge and Wildsville around 750 PM CST. 
  Clayton and Lee Bayou around 820 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Harrisonburg, Sicily Island and Ridgecrest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3164 9201 3194 9160 3188 9160 3188 9158
      3186 9157 3180 9158 3176 9156 3175 9153
      3165 9149 3162 9152 3159 9150 3145 9201
TIME...MOT...LOC 0123Z 235DEG 26KT 3156 9199 

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

DB

5 follow-up statements

745 
WWUS54 KJAN 220137
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
737 PM CST SAT JAN 21 2017

LAC025-029-220230-
/O.CON.KJAN.TO.W.0017.000000T0000Z-170122T0230Z/
Concordia LA-Catahoula LA-
737 PM CST SAT JAN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CST FOR
NORTHWESTERN CONCORDIA AND CENTRAL CATAHOULA PARISHES...
    
At 736 PM CST, a severe thunderstorm capable of producing a tornado
was located near Archie, or 12 miles north of Larto, moving northeast
at 25 mph.

HAZARD...Tornado and baseball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Jonesville around 750 PM CST. 
  Wildsville around 755 PM CST. 
  Wallace Ridge around 800 PM CST. 
  Frogmore around 810 PM CST. 
  Ferriday and West Ferriday around 825 PM CST. 
  Clayton and Lee Bayou around 830 PM CST. 

Other locations impacted by this tornadic thunderstorm include Sicily
Island and Ridgecrest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3162 9197 3194 9160 3188 9160 3188 9158
      3186 9157 3180 9158 3176 9156 3175 9153
      3165 9149 3162 9152 3159 9150 3146 9196
TIME...MOT...LOC 0136Z 244DEG 23KT 3155 9192 

TORNADO...RADAR INDICATED
HAIL...2.75IN

$$

DB

599 
WWUS54 KJAN 220148
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
748 PM CST SAT JAN 21 2017

LAC025-029-220230-
/O.CON.KJAN.TO.W.0017.000000T0000Z-170122T0230Z/
Concordia LA-Catahoula LA-
748 PM CST SAT JAN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CST FOR
NORTHWESTERN CONCORDIA AND CENTRAL CATAHOULA PARISHES...
    
At 748 PM CST, a severe thunderstorm capable of producing a tornado
was located over Jonesville, or 11 miles northwest of Monterey,
moving northeast at 30 mph.

HAZARD...Tornado and baseball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Wildsville around 755 PM CST. 
  Frogmore around 805 PM CST. 
  Ferriday and West Ferriday around 820 PM CST. 
  Clayton and Lee Bayou around 830 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Ridgecrest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3161 9189 3188 9160 3188 9158 3186 9157
      3180 9158 3176 9156 3175 9153 3165 9149
      3162 9152 3159 9150 3149 9185
TIME...MOT...LOC 0148Z 239DEG 25KT 3158 9183 

TORNADO...RADAR INDICATED
HAIL...2.75IN

$$

DB

959 
WWUS54 KJAN 220159
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
759 PM CST SAT JAN 21 2017

LAC025-029-220230-
/O.CON.KJAN.TO.W.0017.000000T0000Z-170122T0230Z/
Concordia LA-Catahoula LA-
759 PM CST SAT JAN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CST FOR
NORTHWESTERN CONCORDIA AND EAST CENTRAL CATAHOULA PARISHES...
    
At 759 PM CST, a severe thunderstorm capable of producing a tornado
was located over Frogmore, or 9 miles west of Ferriday, moving
northeast at 35 mph.

HAZARD...Tornado and tennis ball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Ferriday and West Ferriday around 815 PM CST. 
  Clayton and Lee Bayou around 820 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Ridgecrest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3163 9179 3180 9158 3176 9156 3175 9153
      3165 9149 3162 9152 3159 9150 3152 9174
TIME...MOT...LOC 0159Z 246DEG 28KT 3159 9170 

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

DB

388 
WWUS54 KJAN 220210
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
810 PM CST SAT JAN 21 2017

LAC025-220219-
/O.CAN.KJAN.TO.W.0017.000000T0000Z-170122T0230Z/
Catahoula LA-
810 PM CST SAT JAN 21 2017

...THE TORNADO WARNING FOR EAST CENTRAL CATAHOULA PARISH IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out
of the warned area therefore the warning has been cancelled.

A tornado watch remains in effect until 300 AM CST for northeastern
Louisiana...and southwestern Mississippi.

LAT...LON 3165 9170 3173 9156 3172 9155 3173 9154
      3174 9154 3175 9153 3165 9149 3163 9152
      3161 9152 3159 9150 3154 9169
TIME...MOT...LOC 0209Z 241DEG 25KT 3161 9161 

$$

LAC029-220230-
/O.CON.KJAN.TO.W.0017.000000T0000Z-170122T0230Z/
Concordia LA-
810 PM CST SAT JAN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CST FOR NORTH
CENTRAL CONCORDIA PARISH...
    
At 809 PM CST, a severe thunderstorm capable of producing a tornado
was located near West Ferriday, or near Ferriday, moving northeast at
30 mph.

HAZARD...Tornado and golf ball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Ferriday and West Ferriday around 815 PM CST. 
  Clayton around 825 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Ridgecrest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3165 9170 3173 9156 3172 9155 3173 9154
      3174 9154 3175 9153 3165 9149 3163 9152
      3161 9152 3159 9150 3154 9169
TIME...MOT...LOC 0209Z 241DEG 25KT 3161 9161 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

DB

494 
WWUS54 KJAN 220225
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
825 PM CST SAT JAN 21 2017

LAC029-220235-
/O.EXP.KJAN.TO.W.0017.000000T0000Z-170122T0230Z/
Concordia LA-
825 PM CST SAT JAN 21 2017

...THE TORNADO WARNING FOR NORTH CENTRAL CONCORDIA PARISH WILL EXPIRE
AT 830 PM CST...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 300 AM CST for northeastern
Louisiana...and southwestern Mississippi.

LAT...LON 3165 9170 3173 9156 3172 9155 3173 9154
      3174 9154 3175 9153 3165 9149 3163 9152
      3161 9152 3159 9150 3154 9169
TIME...MOT...LOC 0225Z 235DEG 26KT 3167 9151 

$$

DB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 7:08 PM CST	Severe Thunderstorm Warning	JAN	Catahoula, Concordia	82 min
Jan 21, 8:18 PM CST	Severe Thunderstorm Warning	JAN	Concordia, Tensas	57 min
Jan 21, 8:31 PM CST	Tornado Warning	JAN	Concordia	41 min
Jan 21, 8:43 PM CST	Tornado Warning	JAN	Catahoula, Concordia	17 min
Jan 21, 8:46 PM CST	Tornado Warning	JAN	Morehouse, West Carroll	59 min
Jan 21, 9:38 PM CST	Severe Thunderstorm Warning	JAN	East Carroll, West Carroll	67 min
Jan 21, 9:43 PM CST	Severe Thunderstorm Warning	JAN	East Carroll, Morehouse, West Carroll	47 min
Jan 22, 5:18 AM CST	Wind Advisory	JAN	East Carroll, Morehouse, West Carroll	22 hr

Nearby

Tornado Warnings in Louisiana, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.