Alert archive / Louisiana / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 162, NWS Shreveport, LA

June 7, 20216 parishes in Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Jun 7, 2021, 3:13 PM CDT for 6 parishes in Louisiana. It was in force for 47 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: Jun 7, 2021, 3:13 PM CDT (20:13 UTC)
Expired: Jun 7, 2021, 4:00 PM CDT
In force: 47 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Webster Parish, LA

The radar

The Shreveport radar (KSHV), 49 km from the middle of the area, began a volume at 20:14 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 7, 3:15 PM CDT	TSTM WND DMG	4 Se Benton, LA	NUMEROUS TREES AND POWER LINES DOWN ACROSS BOSSIER PARISH.
Jun 7, 3:45 PM CDT	TSTM WND DMG	1 Ene Minden, LA	TREE DOWN.

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 7, 12:32 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.2 hours before the alert went out and 40 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: 2401 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 563 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

As transmitted.

709 
WUUS54 KSHV 072013
SVRSHV
LAC013-015-017-027-031-119-072100-
/O.NEW.KSHV.SV.W.0162.210607T2013Z-210607T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
313 PM CDT Mon Jun 7 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Southern Webster Parish in northwestern Louisiana...
  North central De Soto Parish in northwestern Louisiana...
  Southeastern Caddo Parish in northwestern Louisiana...
  Southwestern Claiborne Parish in northwestern Louisiana...
  Central Bienville Parish in northwestern Louisiana...
  Southern Bossier Parish in northwestern Louisiana...

* Until 400 PM CDT.

* At 313 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles southwest of Cotton Valley to near Haughton
  to 12 miles east of Stonewall to 6 miles north of Mansfield, moving
  east at 45 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Shreveport, Bossier City, Minden, Homer, Haughton, Benton,
  Stonewall, Ringgold, Sibley, Gibsland, Doyline, Dixie Inn,
  Dubberly, Heflin, Eastwood, Fosters, Lucky, Castor, Athens and
  Bienville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3223 9300 3224 9385 3267 9381 3282 9295
TIME...MOT...LOC 2013Z 259DEG 38KT 3271 9351 3251 9355 3231 9361 3212
9371

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

19

1 follow-up statement

887 
WWUS54 KSHV 072031
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
331 PM CDT Mon Jun 7 2021

LAC031-072040-
/O.CAN.KSHV.SV.W.0162.000000T0000Z-210607T2100Z/
De Soto LA-
331 PM CDT Mon Jun 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL DE SOTO PARISH
IS CANCELLED...

The storms which prompted the warning have weakened. Therefore, the 
warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
northwestern Louisiana.

LAT...LON 3223 9300 3224 9361 3227 9361 3230 9365
      3270 9364 3282 9295
TIME...MOT...LOC 2030Z 259DEG 38KT 3274 9331 3254 9335 3234 9341 3215
9351

$$

LAC013-015-017-027-119-072100-
/O.CON.KSHV.SV.W.0162.000000T0000Z-210607T2100Z/
Webster LA-Caddo LA-Claiborne LA-Bienville LA-Bossier LA-
331 PM CDT Mon Jun 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR SOUTHERN WEBSTER...SOUTHEASTERN CADDO...SOUTHWESTERN CLAIBORNE...
CENTRAL BIENVILLE AND SOUTHEASTERN BOSSIER PARISHES...

At 330 PM CDT, severe thunderstorms were located along a line
extending from 8 miles southeast of Cotton Valley to near Sibley to 7
miles west of Ringgold to 13 miles northwest of Coushatta, moving
east at 45 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Bossier City, Minden, Homer, Haughton, Ringgold, Sibley, Gibsland,
Doyline, Dubberly, Dixie Inn, Heflin, Eastwood, Lucky, Castor,
Athens, Bienville, Jamestown, Bryceland, Mount Lebanon and Curtis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3223 9300 3224 9361 3227 9361 3230 9365
      3270 9364 3282 9295
TIME...MOT...LOC 2030Z 259DEG 38KT 3274 9331 3254 9335 3234 9341 3215
9351

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

19

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 7, 3:04 AM CDT	Flash Flood Watch	SHV	Bossier, Caddo, Claiborne, Webster	52 hr
Jun 7, 2:20 PM CDT	Special Weather Statement	SHV	Bossier, Caddo, De Soto	40 min
Jun 7, 2:30 PM CDT	Special Weather Statement	SHV	De Soto	45 min
Jun 7, 2:51 PM CDT	Areal Flood Advisory	SHV	Bossier, Caddo	3 hr
Jun 7, 3:04 PM CDT	Special Weather Statement	SHV	Bossier, Caddo, Webster	56 min
Jun 7, 3:37 PM CDT	Special Weather Statement	SHV	Sabine	53 min
Jun 7, 3:52 PM CDT	Special Weather Statement	SHV	Claiborne	53 min
Jun 7, 4:01 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Claiborne, Jackson, Lincoln, Union, Webster	44 min
Jun 7, 4:14 PM CDT	Special Weather Statement	SHV	Ouachita	46 min
Jun 7, 4:21 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Union	54 min
Jun 7, 4:30 PM CDT	Special Weather Statement	SHV	Grant, Natchitoches, Winn	45 min
Jun 7, 4:45 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Jackson, Lincoln, Ouachita, Union, Winn	60 min
Jun 7, 5:45 PM CDT	Special Weather Statement	SHV	Ouachita	30 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.