Alert archive / Louisiana / Tornado Warnings in 2021

Tornado Warning 30, NWS Jackson, MS

April 7, 2021Concordia Parish, Louisiana

NWS Jackson, MS issued this tornado warning at Apr 7, 2021, 10:18 PM CDT for Concordia Parish, Louisiana. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 7, 2021, 10:18 PM CDT (03:18 UTC)
Expired: Apr 7, 2021, 10:49 PM CDT
In force: 31 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Concordia Parish, LA

The radar

The Ft Polk radar (KPOE), 126 km from the middle of the area, began a volume at 03:17 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.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 3.3 hours before the alert went out and 183 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: 1905 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 549 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 204 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 12.6

Open this sounding in Storm Lab

The text

As transmitted.

662 
WFUS54 KJAN 080318
TORJAN
LAC029-080400-
/O.NEW.KJAN.TO.W.0030.210408T0318Z-210408T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
1018 PM CDT Wed Apr 7 2021

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  South central Concordia Parish in northeastern Louisiana...

* Until 1100 PM CDT.
    
* At 1017 PM CDT, a severe thunderstorm capable of producing a
  tornado was located over Big Bend, or near Bordelonville, moving
  east at 25 mph.

  HAZARD...Tornado.

  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...
  Black Hawk around 1045 PM CDT.

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 3103 9164 3104 9166 3104 9172 3107 9171
      3109 9172 3110 9170 3114 9172 3116 9170
      3116 9168 3120 9169 3120 9159 3118 9159
      3114 9162 3111 9163 3107 9157 3104 9156
      3102 9158 3100 9164 3097 9166
TIME...MOT...LOC 0317Z 265DEG 22KT 3107 9184 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

TW

1 follow-up statement

009 
WWUS54 KJAN 080349
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1049 PM CDT Wed Apr 7 2021

LAC029-080358-
/O.CAN.KJAN.TO.W.0030.000000T0000Z-210408T0400Z/
Concordia LA-
1049 PM CDT Wed Apr 7 2021

...THE TORNADO WARNING FOR SOUTH CENTRAL CONCORDIA PARISH IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

LAT...LON 3103 9164 3104 9166 3104 9172 3107 9171
      3109 9172 3110 9170 3114 9172 3116 9170
      3116 9168 3120 9169 3120 9159 3118 9159
      3114 9162 3111 9163 3107 9157 3104 9156
      3102 9158 3100 9164 3097 9166
TIME...MOT...LOC 0347Z 265DEG 22KT 3109 9161 

$$

TW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 7:09 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse	66 min
Apr 7, 7:28 PM CDT	Tornado Warning	JAN	Morehouse	47 min
Apr 7, 8:05 PM CDT	Tornado Warning	JAN	East Carroll, West Carroll	55 min
Apr 7, 9:43 PM CDT	Severe Thunderstorm Warning	JAN	Concordia	47 min
Apr 8, 6:11 AM CDT	Dense Fog Advisory	JAN	Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more	3 hr
Apr 8, 10:57 AM CDT	River Flood Warning	JAN	East Carroll	5 days

Nearby

Tornado Warnings in Louisiana, 2021 Every tornado warning in 2021 Tornadoes in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.