Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 89, NWS Shreveport, LA

April 9, 20216 counties in Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 9, 2021, 11:47 PM CDT for 6 counties in Texas. It was in force for 43 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, 11:47 PM CDT (04:47 UTC)
Expired: Apr 10, 2021, 12:30 AM CDT
In force: 43 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Camp County, TX, Franklin County, TX, Gregg County, TX, Smith County, TX, Upshur County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 144 km from the middle of the area, began a volume at 04:46 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 10, 12:24 AM CDT	HAIL 0.5	1 Wsw Lindale, TX	REPORT FROM MPING: HALF-INCH (0.50 IN.).
Apr 10, 12:25 AM CDT	HAIL 0.75	1 Ese Lindale, TX	SOCIAL MEDIA REPORT OF PENNY SIZE HAIL ON COUNTY ROAD 431 NEAR LINDALE.

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 9, 5:32 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 9, 8:44 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 4.8 hours before the alert went out and 152 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: 148 J/kg
Mixed-layer CIN: -321 J/kg
Mixed-layer LCL: 2441 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 329 m²/s²
0-3 km storm-relative helicity: 421 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

473 
WUUS54 KSHV 100447
SVRSHV
TXC063-159-183-423-459-499-100530-
/O.NEW.KSHV.SV.W.0089.210410T0447Z-210410T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
1147 PM CDT Fri Apr 9 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Smith County in northeastern Texas...
  Southwestern Franklin County in northeastern Texas...
  Wood County in northeastern Texas...
  Western Upshur County in northeastern Texas...
  Southwestern Camp County in northeastern Texas...
  Southwestern Gregg County in northeastern Texas...

* Until 1230 AM CDT.

* At 1146 PM CDT, severe thunderstorms were located along a line
  extending from near Newsome to 6 miles southeast of Grand Saline,
  moving southeast at 60 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Tyler, Kilgore, Whitehouse, Gladewater, Mineola, Winnsboro,
  Lindale, Mount Vernon, Quitman, Big Sandy, Hawkins, Scroggins,
  Pleasant Grove, Hainesville, Golden, Rosewood, Hoard, Liberty City,
  Purley and Forest Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3296 9531 3315 9531 3318 9523 3237 9489
      3237 9498 3233 9499 3214 9547 3220 9546
      3223 9549 3230 9545 3236 9545 3248 9559
      3269 9559 3272 9564 3296 9567
TIME...MOT...LOC 0446Z 357DEG 54KT 3293 9515 3264 9561 

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
Apr 9, 7:05 PM CDT	Special Weather Statement	SHV	Nacogdoches	40 min
Apr 9, 7:07 PM CDT	Special Weather Statement	SHV	Gregg	53 min
Apr 9, 7:11 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Rusk	27 min
Apr 9, 7:35 PM CDT	Special Weather Statement	SHV	Shelby	40 min
Apr 9, 8:08 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, San Augustine	42 min
Apr 9, 8:36 PM CDT	Special Weather Statement	SHV	Panola, Shelby	54 min
Apr 9, 10:02 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Rusk	58 min
Apr 9, 10:48 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Red River	42 min
Apr 9, 10:50 PM CDT	Severe Thunderstorm Warning	SHV	Nacogdoches, Rusk, San Augustine, Shelby	55 min
Apr 9, 11:12 PM CDT	Special Weather Statement	SHV	Camp, Cass, Franklin, Morris, Titus	48 min
Apr 9, 11:18 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	42 min
Apr 9, 11:42 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Franklin, Gregg, Harrison, Marion and 3 more	63 min
Apr 10, 1:05 AM CDT	Special Weather Statement	SHV	Harrison	40 min
Apr 10, 1:28 AM CDT	Special Weather Statement	SHV	Cherokee	47 min
Apr 10, 1:54 AM CDT	Special Weather Statement	SHV	Nacogdoches	51 min
Apr 10, 1:55 AM CDT	Special Weather Statement	SHV	Shelby	50 min
Apr 10, 2:07 AM CDT	Special Weather Statement	SHV	Angelina	38 min
Apr 10, 2:38 AM CDT	Special Weather Statement	SHV	San Augustine	52 min
Apr 10, 2:50 AM CDT	Special Weather Statement	SHV	San Augustine	40 min
Apr 10, 3:04 AM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, Sabine, San Augustine	56 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.