Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 234, NWS Jackson, MS

June 13, 2021Catahoula Parish, Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Jun 13, 2021, 7:54 PM CDT for Catahoula Parish, Louisiana. It was in force for 39 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: Jun 13, 2021, 7:54 PM CDT (00:54 UTC)
Expired: Jun 13, 2021, 8:33 PM CDT
In force: 39 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Catahoula Parish, LA

The radar

The Ft Polk radar (KPOE), 97 km from the middle of the area, began a volume at 00:56 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
Jun 13, 7:55 PM CDT	TSTM WND DMG	Larto, LA	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM LARTO. A FEW SMALL TREE LIMBS WERE SNAPPED FROM TREES.

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
Jun 13, 12:22 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 0.9 hours before the alert went out and 175 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: 1966 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1676 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

955 
WUUS54 KJAN 140054
SVRJAN
LAC025-140145-
/O.NEW.KJAN.SV.W.0234.210614T0054Z-210614T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
754 PM CDT Sun Jun 13 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Southwestern Catahoula Parish in northeastern Louisiana...

* Until 845 PM CDT.

* At 753 PM CDT, a severe thunderstorm was located over Larto, and is
  nearly stationary.

  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.

* Locations impacted include...
  Larto.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Larto Lake, get away from the water and move indoors 
or inside a vehicle. Remember, lightning can strike out to 15 miles 
from the parent thunderstorm. If you can hear thunder, you are close 
enough to be struck by lightning. Move to safe shelter now!  Do not 
be caught on the water in a thunderstorm.

&&

LAT...LON 3130 9201 3129 9201 3130 9200 3137 9201
      3141 9199 3138 9186 3128 9187 3130 9193
      3127 9195 3124 9194 3123 9192 3122 9194
      3124 9195 3123 9197 3124 9198 3124 9201
      3125 9199 3126 9201 3127 9199 3128 9202
TIME...MOT...LOC 0053Z 026DEG 4KT 3135 9194 

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

DL

2 follow-up statements

083 
WWUS54 KJAN 140115
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
815 PM CDT Sun Jun 13 2021

LAC025-140145-
/O.CON.KJAN.SV.W.0234.000000T0000Z-210614T0145Z/
Catahoula LA-
815 PM CDT Sun Jun 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR SOUTHWESTERN CATAHOULA PARISH...

At 815 PM CDT, a severe thunderstorm was located near Larto, and is
nearly stationary.

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

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southwestern Catahoula Parish.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Larto Lake, get away from the water and move indoors 
or inside a vehicle. remember, lightning can strike out to 15 miles 
from the parent thunderstorm. If you can hear thunder, you are close 
enough to be struck by lightning. Move to safe shelter now!  Do not 
be caught on the water in a thunderstorm.

&&

LAT...LON 3130 9201 3129 9201 3130 9200 3137 9201
      3141 9199 3139 9191 3130 9191 3130 9193
      3127 9195 3124 9194 3123 9192 3122 9194
      3124 9195 3123 9197 3124 9198 3124 9201
      3125 9199 3126 9201 3127 9199 3128 9202
TIME...MOT...LOC 0115Z 060DEG 2KT 3136 9196 

HAIL...0.75IN
WIND...60MPH
 
$$

DL

119 
WWUS54 KJAN 140133
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
833 PM CDT Sun Jun 13 2021

LAC025-140143-
/O.CAN.KJAN.SV.W.0234.000000T0000Z-210614T0145Z/
Catahoula LA-
833 PM CDT Sun Jun 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CATAHOULA PARISH
IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Jackson.

LAT...LON 3130 9201 3129 9201 3130 9200 3137 9201
      3141 9199 3139 9191 3130 9191 3130 9193
      3127 9195 3124 9194 3123 9192 3122 9194
      3124 9195 3123 9197 3124 9198 3124 9201
      3125 9199 3126 9201 3127 9199 3128 9202
TIME...MOT...LOC 0130Z 026DEG 4KT 3134 9197 

$$

DL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 7:28 PM CDT	Special Weather Statement	JAN	Avoyelles	62 min
Jun 14, 3:04 AM CDT	Heat Advisory	JAN	Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more	12 hr

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.