Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 52, NWS Shreveport, LA

April 9, 20214 counties in Texas; Little River County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 9, 2021, 12:45 PM CDT for 4 counties in Texas; Little River County, Arkansas. It was in force for 33 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
Apr 9, 2021, 12:45 PM CDT (17:45 UTC)
Expired
Apr 9, 2021, 1:18 PM CDT
In force
33 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Little River County, AR, Bowie County, TX, Morris County, TX, Red River County, TX, Titus County, TX

The radar

The Shreveport radar (KSHV), 141 km from the middle of the area, began a volume at 17:45 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

TimeReportWhereRemark
Apr 9, 12:55 PM CDTHAIL 1.251 Nw De Kalb, TX1.25 INCH HAIL NEAR DE KALB, TX.
Apr 9, 12:56 PM CDTHAIL 1.51 Nw De Kalb, TXSPOTTER NETWORK REPORTS 1.50 HAIL 1 NW DE KALB.

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.

IssuedProductOfficeLasted
Apr 9, 12:07 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 5.8 hours before the alert went out and 143 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2021-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 928 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2021-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
928 J/kg
Mixed-layer CIN
-310 J/kg
Mixed-layer LCL
1043 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

112 
WUUS54 KSHV 091745
SVRSHV
ARC081-TXC037-343-387-449-091830-
/O.NEW.KSHV.SV.W.0052.210409T1745Z-210409T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
1245 PM CDT Fri Apr 9 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Southwestern Little River County in southwestern Arkansas...
  Western Bowie County in northeastern Texas...
  Northern Morris County in northeastern Texas...
  Northeastern Titus County in northeastern Texas...
  Southeastern Red River County in northeastern Texas...

* Until 130 PM CDT.

* At 1245 PM CDT, a severe thunderstorm was located near Dalby
  Springs, or 9 miles southeast of Boxelder, moving northeast at 40
  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.

* Locations impacted include...
  New Boston, De Kalb, Dalby Springs, Us 259 And I 30 Intersection,
  Almont, Spring Hill and Lydia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3364 9454 3364 9452 3363 9454 3362 9453
      3362 9452 3363 9452 3362 9451 3362 9449
      3366 9449 3369 9444 3340 9429 3321 9480
      3344 9492
TIME...MOT...LOC 1745Z 247DEG 33KT 3337 9478 

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

44
2 follow-up statements
542 
WWUS54 KSHV 091809
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
109 PM CDT Fri Apr 9 2021

TXC343-387-449-091818-
/O.CAN.KSHV.SV.W.0052.000000T0000Z-210409T1830Z/
Morris TX-Titus TX-Red River TX-
109 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MORRIS...NORTHEASTERN
TITUS AND SOUTHEASTERN RED RIVER COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
southwestern Arkansas...and northeastern Texas.

LAT...LON 3364 9454 3364 9452 3363 9454 3362 9453
      3362 9452 3363 9452 3362 9451 3362 9449
      3366 9449 3369 9444 3340 9429 3329 9460
      3354 9473
TIME...MOT...LOC 1808Z 247DEG 33KT 3346 9454 

$$

ARC081-TXC037-091830-
/O.CON.KSHV.SV.W.0052.000000T0000Z-210409T1830Z/
Little River AR-Bowie TX-
109 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR SOUTHWESTERN LITTLE RIVER AND WESTERN BOWIE COUNTIES...

At 108 PM CDT, a severe thunderstorm was located near De Kalb, or 7
miles west of New Boston, moving northeast at 40 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.

Locations impacted include...
New Boston, De Kalb, Almont and Spring Hill. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3364 9454 3364 9452 3363 9454 3362 9453
      3362 9452 3363 9452 3362 9451 3362 9449
      3366 9449 3369 9444 3340 9429 3329 9460
      3354 9473
TIME...MOT...LOC 1808Z 247DEG 33KT 3346 9454 

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

44
479 
WWUS54 KSHV 091818
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
118 PM CDT Fri Apr 9 2021

ARC081-TXC037-091828-
/O.CAN.KSHV.SV.W.0052.000000T0000Z-210409T1830Z/
Little River AR-Bowie TX-
118 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LITTLE RIVER AND
WESTERN BOWIE COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened.
moved out of the warned area. Therefore, the warning has been 
cancelled.

A Severe Thunderstorm Watch remains in effect until 600 PM CDT for
southwestern Arkansas...and northeastern Texas.

LAT...LON 3364 9454 3364 9452 3363 9454 3362 9453
      3362 9452 3363 9452 3362 9451 3362 9449
      3366 9449 3369 9444 3340 9429 3329 9460
      3354 9473
TIME...MOT...LOC 1814Z 247DEG 33KT 3350 9444 

$$

44

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 11:41 AM CDTSpecial Weather StatementSHVFranklin, Red River, Titus49 min
Apr 9, 12:04 PM CDTSevere Thunderstorm WarningSHVBowie, Cass, Morris, Red River, Titus41 min
Apr 9, 12:29 PM CDTSpecial Weather StatementSHVUpshur46 min
Apr 9, 12:41 PM CDTSevere Thunderstorm WarningSHVBowie, Camp, Cass, Morris, Titus31 min
Apr 9, 1:34 PM CDTSevere Thunderstorm WarningSHVSmith, Wood21 min
Apr 9, 3:22 PM CDTSpecial Weather StatementSHVMorris53 min
Apr 9, 4:31 PM CDTSevere Thunderstorm WarningSHVCherokee, Nacogdoches, Panola, Rusk, Shelby59 min
Apr 9, 5:42 PM CDTSpecial Weather StatementSHVNacogdoches63 min
Apr 9, 5:49 PM CDTSevere Thunderstorm WarningSHVPanola, Shelby56 min
Apr 9, 6:01 PM CDTSevere Thunderstorm WarningSHVPanola, Rusk, Shelby59 min
Apr 9, 6:33 PM CDTFlash Flood WarningSHVCherokee, Nacogdoches, Panola, Rusk, Smith3 hr
Apr 9, 6:39 PM CDTSpecial Weather StatementSHVCherokee51 min
Apr 9, 6:53 PM CDTSevere Thunderstorm WarningSHVPanola, Rusk45 min
Apr 9, 10:41 AM CDTSpecial Weather StatementSHVHempstead49 min
Apr 9, 11:25 AM CDTSpecial Weather StatementSHVLittle River50 min
Apr 9, 12:28 PM CDTSevere Thunderstorm WarningSHVHempstead, Nevada45 min
Apr 9, 12:34 PM CDTSpecial Weather StatementSHVNevada41 min
Apr 9, 1:49 PM CDTSpecial Weather StatementSHVLafayette, Miller41 min
Apr 9, 2:03 PM CDTSevere Thunderstorm WarningSHVColumbia, Hempstead, Lafayette, Miller, Nevada30 min
Apr 9, 2:32 PM CDTSevere Thunderstorm WarningSHVColumbia, Lafayette, Nevada, Union43 min
Apr 9, 3:05 PM CDTSevere Thunderstorm WarningSHVColumbia, Union55 min
Apr 9, 3:57 PM CDTSevere Thunderstorm WarningSHVUnion33 min
Apr 9, 4:30 PM CDTSevere Thunderstorm WarningSHVUnion30 min
Apr 9, 5:01 PM CDTSevere Thunderstorm WarningSHVUnion44 min
Apr 9, 5:58 PM CDTSevere Thunderstorm WarningSHVUnion21 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021Severe Thunderstorm Warnings in Arkansas, 2021Every 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.