Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 49, NWS Shreveport, LA

April 9, 20215 counties in Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 9, 2021, 12:04 PM CDT for 5 counties in Texas. It was in force for 41 min. 3 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, 12:04 PM CDT (17:04 UTC)
Expired: Apr 9, 2021, 12:45 PM CDT
In force: 41 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Bowie County, TX, Cass County, TX, Morris County, TX, Red River County, TX, Titus County, TX

The radar

The Shreveport radar (KSHV), 128 km from the middle of the area, began a volume at 17:06 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 9, 12:07 PM CDT	HAIL 1.5	Mount Pleasant, TX	PUBLIC REPORTS PING PONG BALL SIZE HAIL NEAR HWY 271 NORTH IN MOUNT PLEASANT VIA KLTV SOCIAL MEDIA PAGE.
Apr 9, 12:53 PM CDT	HAIL 1.75	2 E Omaha, TX	TRAINED SPOTTER REPORTS LARGE HAIL AT PEWITT HIGH SCHOOL NEAR OMAHA.
Apr 9, 12:55 PM CDT	HAIL 1.25	1 Nw De Kalb, TX	1.25 INCH HAIL NEAR DE KALB, 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 12:00Z, 5.1 hours before the alert went out and 131 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: 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.

495 
WUUS54 KSHV 091704
SVRSHV
TXC037-067-343-387-449-091745-
/O.NEW.KSHV.SV.W.0049.210409T1704Z-210409T1745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
1204 PM CDT Fri Apr 9 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Northwestern Cass County in northeastern Texas...
  Southwestern Bowie County in northeastern Texas...
  Northern Morris County in northeastern Texas...
  Titus County in northeastern Texas...
  Southeastern Red River County in northeastern Texas...

* Until 1245 PM CDT.

* At 1204 PM CDT, a severe thunderstorm was located near Wilkerson,
  or 9 miles north of Mount Pleasant, moving east at 45 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Mount Pleasant, De Kalb, Naples, Omaha, Us 259 And I 30
  Intersection, Wilkerson, Cookville, Dalby Springs, Talco, Marietta,
  Spring Hill, Harts Bluff, Lydia and Bryans Mill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3310 9503 3338 9511 3359 9447 3316 9437
TIME...MOT...LOC 1704Z 257DEG 39KT 3330 9499 

HAIL...1.25IN
WIND...60MPH
 
$$

44

1 follow-up statement

167 
WWUS54 KSHV 091735
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
1235 PM CDT Fri Apr 9 2021

TXC037-067-343-387-449-091745-
/O.CON.KSHV.SV.W.0049.000000T0000Z-210409T1745Z/
Cass TX-Bowie TX-Morris TX-Titus TX-Red River TX-
1235 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT
FOR NORTHWESTERN CASS...SOUTHWESTERN BOWIE...NORTHERN MORRIS...
NORTHEASTERN TITUS AND SOUTHEASTERN RED RIVER COUNTIES...

At 1235 PM CDT, a severe thunderstorm was located 7 miles east of
Dalby Springs, or 11 miles southwest of New Boston, moving east at 45
mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
De Kalb, Naples, Dalby Springs, Us 259 And I 30 Intersection,
Wilkerson, Spring Hill, Harts Bluff and Lydia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3318 9494 3341 9502 3359 9447 3325 9439
TIME...MOT...LOC 1735Z 257DEG 39KT 3338 9459 

HAIL...1.25IN
WIND...60MPH
 
$$

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 11:41 AM CDT	Special Weather Statement	SHV	Franklin, Red River, Titus	49 min
Apr 9, 12:29 PM CDT	Special Weather Statement	SHV	Upshur	46 min
Apr 9, 12:41 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Cass, Morris, Titus	31 min
Apr 9, 12:45 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Morris, Red River, Titus	33 min
Apr 9, 1:34 PM CDT	Severe Thunderstorm Warning	SHV	Smith, Wood	21 min
Apr 9, 3:22 PM CDT	Special Weather Statement	SHV	Morris	53 min
Apr 9, 4:31 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Panola, Rusk, Shelby	59 min
Apr 9, 5:42 PM CDT	Special Weather Statement	SHV	Nacogdoches	63 min
Apr 9, 5:49 PM CDT	Severe Thunderstorm Warning	SHV	Panola, Shelby	56 min
Apr 9, 6:01 PM CDT	Severe Thunderstorm Warning	SHV	Panola, Rusk, Shelby	59 min
Apr 9, 6:33 PM CDT	Flash Flood Warning	SHV	Cherokee, Nacogdoches, Panola, Rusk, Smith	3 hr
Apr 9, 6:39 PM CDT	Special Weather Statement	SHV	Cherokee	51 min
Apr 9, 6:53 PM CDT	Severe Thunderstorm Warning	SHV	Panola, Rusk	45 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.