Alert archive / Louisiana / Tornado Warnings in 2021

Tornado Warning 19, NWS Shreveport, LA

April 7, 2021Bienville Parish, Red River Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 7, 2021, 4:52 PM CDT for Bienville Parish, Red River Parish, Louisiana. It was in force for 25 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: Apr 7, 2021, 4:52 PM CDT (21:52 UTC)
Expired: Apr 7, 2021, 5:17 PM CDT
In force: 25 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Bienville Parish, LA, Red River Parish, LA

The radar

The Shreveport radar (KSHV), 73 km from the middle of the area, began a volume at 21:56 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
Apr 7, 4:55 PM CDT	TSTM WND DMG	5 Nnw Hall Summit, LA	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 5 NNW HALL SUMMIT. REPORT OF ROOF DAMAGE ALONG HWY 783 NEAR RINGGOLD / SPRINGHILL BAPTIST CHURCH.

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
Apr 7, 12:38 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 9.9 hours before the alert went out and 67 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: 532 J/kg
Mixed-layer CIN: -229 J/kg
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 267 m²/s²
0-3 km storm-relative helicity: 433 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

246 
WFUS54 KSHV 072152
TORSHV
LAC013-081-072230-
/O.NEW.KSHV.TO.W.0019.210407T2152Z-210407T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
452 PM CDT Wed Apr 7 2021

The National Weather Service in Shreveport has issued a

* Tornado Warning for...
  Northeastern Red River Parish in northwestern Louisiana...
  Southern Bienville Parish in northwestern Louisiana...

* Until 530 PM CDT.
    
* At 452 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Ringgold, or 26 miles south of Minden, moving east
  at 40 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...
  Ringgold around 500 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Womack, Friendship, Castor, Jamestown, Liberty Hill, Hall Summit,
Bienville, Saline, Brice and Lucky.

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 3215 9306 3215 9318 3214 9318 3211 9336
      3234 9340 3244 9287 3218 9283
TIME...MOT...LOC 2152Z 255DEG 35KT 3223 9330 

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

$$

44

2 follow-up statements

330 
WWUS54 KSHV 072207
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
507 PM CDT Wed Apr 7 2021

LAC081-072217-
/O.CAN.KSHV.TO.W.0019.000000T0000Z-210407T2230Z/
Red River LA-
507 PM CDT Wed Apr 7 2021

...THE TORNADO WARNING FOR NORTHEASTERN RED RIVER 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 800 PM CDT for northwestern
Louisiana.

LAT...LON 3215 9306 3216 9318 3237 9324 3244 9287
      3218 9283
TIME...MOT...LOC 2207Z 255DEG 35KT 3227 9313 

$$

LAC013-072230-
/O.CON.KSHV.TO.W.0019.000000T0000Z-210407T2230Z/
Bienville LA-
507 PM CDT Wed Apr 7 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
SOUTHEASTERN BIENVILLE PARISH...
    
At 507 PM CDT, a severe thunderstorm capable of producing a tornado
was located 9 miles southeast of Ringgold, or 24 miles west of
Jonesboro, moving east at 40 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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Bienville Parish, including the following locations...
Friendship, Castor, Jamestown, Liberty Hill, Bienville, Saline, Brice
and Lucky.

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 3215 9306 3216 9318 3237 9324 3244 9287
      3218 9283
TIME...MOT...LOC 2207Z 255DEG 35KT 3227 9313 

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

$$

44

261 
WWUS54 KSHV 072217
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
517 PM CDT Wed Apr 7 2021

LAC013-072226-
/O.CAN.KSHV.TO.W.0019.000000T0000Z-210407T2230Z/
Bienville LA-
517 PM CDT Wed Apr 7 2021

...THE TORNADO WARNING FOR SOUTHEASTERN BIENVILLE PARISH IS
CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled. However, a new tornado 
warning has been issued in similar areas.

A Tornado Watch remains in effect until 800 PM CDT for northwestern
Louisiana.

LAT...LON 3215 9306 3216 9318 3237 9324 3244 9287
      3218 9283
TIME...MOT...LOC 2209Z 255DEG 35KT 3229 9302 

$$

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 1:22 PM CDT	Severe Thunderstorm Warning	SHV	De Soto, Sabine	38 min
Apr 7, 1:50 PM CDT	Special Weather Statement	SHV	De Soto	40 min
Apr 7, 3:12 PM CDT	Special Weather Statement	SHV	Lincoln, Union	48 min
Apr 7, 3:21 PM CDT	Special Weather Statement	SHV	Claiborne, Webster	39 min
Apr 7, 3:56 PM CDT	Special Weather Statement	SHV	De Soto	49 min
Apr 7, 4:09 PM CDT	Special Weather Statement	SHV	Claiborne	51 min
Apr 7, 4:20 PM CDT	Tornado Warning	SHV	Bienville, Bossier, Caddo, De Soto, Red River	40 min
Apr 7, 4:31 PM CDT	Tornado Warning	SHV	Bienville, Bossier, Caddo, Claiborne, Webster	19 min
Apr 7, 5:16 PM CDT	Tornado Warning	SHV	Bienville, Claiborne, Jackson, Lincoln, Webster	14 min
Apr 7, 5:36 PM CDT	Severe Thunderstorm Warning	SHV	Sabine	39 min
Apr 7, 6:38 PM CDT	Tornado Warning	SHV	Jackson, Lincoln, Ouachita, Union	52 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.