Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 96, NWS Shreveport, LA

April 13, 2021Harrison County, Panola County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 13, 2021, 7:16 PM CDT for Harrison County, Panola County, Texas. It was in force for 44 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 13, 2021, 7:16 PM CDT (00:16 UTC)
Expired: Apr 13, 2021, 8:00 PM CDT
In force: 44 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Harrison County, TX, Panola County, TX

The radar

The Shreveport radar (KSHV), 49 km from the middle of the area, began a volume at 00:19 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 13, 7:30 PM CDT	HAIL 1.25	4 Ene Carthage, TX
Apr 13, 8:00 PM CDT	HAIL 1	13 Ssw Waskom, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 0.3 hours before the alert went out and 58 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: 1508 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1286 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

202 
WUUS54 KSHV 140016
SVRSHV
TXC203-365-140100-
/O.NEW.KSHV.SV.W.0096.210414T0016Z-210414T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
716 PM CDT Tue Apr 13 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Southern Harrison County in northeastern Texas...
  Panola County in northeastern Texas...

* Until 800 PM CDT.

* At 715 PM CDT, severe thunderstorms were located along a line
  extending from near Carthage to 11 miles north of Tenaha, moving
  north at 15 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...
  Carthage, Beckville, Deberry, Gary City, Midyett, Deadwood and
  Front.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3237 9448 3233 9435 3238 9405 3201 9405
      3205 9443
TIME...MOT...LOC 0015Z 185DEG 14KT 3214 9443 3210 9418 

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

24

1 follow-up statement

830 
WWUS54 KSHV 140037
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
737 PM CDT Tue Apr 13 2021

TXC203-365-140100-
/O.CON.KSHV.SV.W.0096.000000T0000Z-210414T0100Z/
Harrison TX-Panola TX-
737 PM CDT Tue Apr 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR SOUTHERN HARRISON AND NORTHEASTERN PANOLA COUNTIES...

At 736 PM CDT, severe thunderstorms were located along a line
extending from near Beckville to 8 miles south of Deberry, moving
east at 15 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...
Carthage, Deberry, Midyett, Deadwood and Front. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3233 9435 3238 9405 3210 9405 3218 9437
      3236 9444
TIME...MOT...LOC 0036Z 270DEG 14KT 3222 9442 3218 9417 

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

24

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 7:30 PM CDT	Special Weather Statement	SHV	Shelby	30 min
Apr 13, 8:00 PM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola	38 min
Apr 13, 9:28 PM CDT	Special Weather Statement	SHV	Cherokee	62 min
Apr 13, 10:24 PM CDT	Special Weather Statement	SHV	Rusk	36 min
Apr 14, 12:55 AM CDT	Special Weather Statement	SHV	Smith	35 min
Apr 14, 1:13 AM CDT	Special Weather Statement	SHV	Smith	32 min
Apr 14, 1:27 AM CDT	Severe Thunderstorm Warning	SHV	Smith, Upshur, Wood	63 min
Apr 14, 1:59 AM CDT	Special Weather Statement	SHV	Upshur	31 min
Apr 14, 2:09 AM CDT	Special Weather Statement	SHV	Gregg	36 min
Apr 14, 2:33 AM CDT	Special Weather Statement	SHV	Upshur	42 min
Apr 14, 2:41 AM CDT	Special Weather Statement	SHV	Gregg	49 min
Apr 14, 3:30 AM CDT	Special Weather Statement	SHV	Marion	45 min
Apr 14, 4:29 AM CDT	Special Weather Statement	SHV	Franklin, Titus	46 min
Apr 14, 4:54 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Morris, Red River, Titus	50 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.