Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 12, NWS Jackson, MS

March 16, 2021Franklin Parish, Madison Parish, Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Mar 16, 2021, 3:27 PM CDT for Franklin Parish, Madison Parish, Louisiana. It was in force for 48 min. 2 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: Mar 16, 2021, 3:27 PM CDT (20:27 UTC)
Expired: Mar 16, 2021, 4:15 PM CDT
In force: 48 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Franklin Parish, LA, Madison Parish, LA

The radar

The Jackson/Brandon,MS radar (KDGX), 164 km from the middle of the area, began a volume at 20:29 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 16, 3:30 PM CDT	TSTM WND DMG	Winnsboro, LA	A FEW TREES REPORTED DOWN IN WINNSBORO.
Mar 16, 3:32 PM CDT	HAIL 1.25	Winnsboro, LA	REPORT RELAYED VIA SOCIAL MEDIA.

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 12:00Z, 8.5 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: 812 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

915 
WUUS54 KJAN 162027
SVRJAN
LAC041-065-162115-
/O.NEW.KJAN.SV.W.0012.210316T2027Z-210316T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
327 PM CDT Tue Mar 16 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  West central Madison Parish in northeastern Louisiana...
  Northern Franklin Parish in northeastern Louisiana...

* Until 415 PM CDT.

* At 327 PM CDT, a severe thunderstorm was located over Winnsboro,
  moving northeast at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Winnsboro around 330 PM CDT.
  Crowville around 350 PM CDT.
  Bakers around 405 PM CDT.

Other locations impacted by this severe thunderstorm include Baskin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3217 9186 3218 9184 3221 9182 3224 9177
      3233 9176 3234 9170 3237 9170 3239 9167
      3239 9165 3240 9164 3241 9148 3234 9137
      3201 9173 3211 9187 3212 9187 3212 9188
TIME...MOT...LOC 2027Z 217DEG 28KT 3213 9173 

HAIL...1.00IN
WIND...60MPH
 
$$

TW

5 follow-up statements

922 
WWUS54 KJAN 162033
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
333 PM CDT Tue Mar 16 2021

LAC041-065-162115-
/O.CON.KJAN.SV.W.0012.000000T0000Z-210316T2115Z/
Madison LA-Franklin LA-
333 PM CDT Tue Mar 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR WEST CENTRAL MADISON AND NORTHERN FRANKLIN PARISHES...

At 333 PM CDT, a severe thunderstorm was located over Winnsboro,
moving northeast at 30 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Crowville around 345 PM CDT.
  Bakers around 400 PM CDT.

Other locations impacted by this severe thunderstorm include Baskin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3217 9186 3218 9184 3221 9182 3224 9177
      3233 9176 3234 9170 3237 9170 3239 9167
      3239 9165 3240 9164 3241 9148 3234 9137
      3207 9166
TIME...MOT...LOC 2033Z 217DEG 28KT 3217 9169 

HAIL...1.25IN
WIND...60MPH
 
$$

TW

918 
WWUS54 KJAN 162043
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
343 PM CDT Tue Mar 16 2021

LAC041-065-162115-
/O.CON.KJAN.SV.W.0012.000000T0000Z-210316T2115Z/
Madison LA-Franklin LA-
343 PM CDT Tue Mar 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR WEST CENTRAL MADISON AND NORTHEASTERN FRANKLIN PARISHES...

At 343 PM CDT, a severe thunderstorm was located over Crowville, or 7
miles northeast of Winnsboro, moving northeast at 30 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Bakers around 400 PM CDT.

Other locations impacted by this severe thunderstorm include Baskin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3222 9180 3224 9177 3233 9176 3234 9170
      3237 9170 3239 9167 3239 9165 3240 9164
      3241 9148 3234 9137 3214 9158
TIME...MOT...LOC 2043Z 217DEG 28KT 3224 9163 

HAIL...1.25IN
WIND...60MPH
 
$$

TW

730 
WWUS54 KJAN 162052
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
352 PM CDT Tue Mar 16 2021

LAC041-065-162115-
/O.CON.KJAN.SV.W.0012.000000T0000Z-210316T2115Z/
Madison LA-Franklin LA-
352 PM CDT Tue Mar 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR WEST CENTRAL MADISON AND NORTHEASTERN FRANKLIN PARISHES...

At 352 PM CDT, a severe thunderstorm was located near Bakers, or 11
miles east of Mangham, moving northeast at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Bakers around 400 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3233 9176 3234 9170 3237 9170 3239 9167
      3239 9165 3240 9164 3241 9148 3234 9137
      3219 9154 3228 9177
TIME...MOT...LOC 2052Z 214DEG 30KT 3231 9158 

HAIL...1.00IN
WIND...60MPH
 
$$

TW

532 
WWUS54 KJAN 162100
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
400 PM CDT Tue Mar 16 2021

LAC041-065-162115-
/O.CON.KJAN.SV.W.0012.000000T0000Z-210316T2115Z/
Madison LA-Franklin LA-
400 PM CDT Tue Mar 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR WEST CENTRAL MADISON AND NORTHEASTERN FRANKLIN PARISHES...

At 400 PM CDT, a severe thunderstorm was located near Bakers, or 13
miles southeast of Rayville, moving northeast at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of west
central Madison and northeastern Franklin Parishes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3234 9170 3237 9170 3239 9167 3239 9165
      3240 9164 3241 9148 3234 9137 3228 9144
TIME...MOT...LOC 2100Z 212DEG 31KT 3239 9155 

HAIL...1.00IN
WIND...60MPH
 
$$

TW

557 
WWUS54 KJAN 162109
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
409 PM CDT Tue Mar 16 2021

LAC041-065-162119-
/O.EXP.KJAN.SV.W.0012.000000T0000Z-210316T2115Z/
Madison LA-Franklin LA-
409 PM CDT Tue Mar 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MADISON AND
NORTHEASTERN FRANKLIN PARISHES WILL EXPIRE AT 415 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

LAT...LON 3234 9170 3237 9170 3239 9167 3239 9165
      3240 9164 3241 9148 3234 9137 3228 9144
TIME...MOT...LOC 2109Z 217DEG 28KT 3243 9151 

$$

TW

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 2:22 PM CDT	Special Weather Statement	JAN	Catahoula	53 min
Mar 16, 3:13 PM CDT	Special Weather Statement	JAN	Franklin	47 min
Mar 16, 3:57 PM CDT	Special Weather Statement	JAN	West Carroll	48 min
Mar 16, 4:16 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Madison, Richland, West Carroll	59 min
Mar 16, 4:50 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll	40 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.