Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 192, NWS Shreveport, LA

October 10, 20215 counties in Texas; McCurtain County, Oklahoma

NWS Shreveport, LA issued this severe thunderstorm warning at Oct 10, 2021, 11:24 PM CDT for 5 counties in Texas; McCurtain County, Oklahoma. It was in force for 66 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: Oct 10, 2021, 11:24 PM CDT (04:24 UTC)
Expired: Oct 11, 2021, 12:30 AM CDT
In force: 66 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties McCurtain County, OK, Bowie County, TX, Franklin County, TX, Morris County, TX, Red River County, TX, Titus County, TX

The radar

The Shreveport radar (KSHV), 172 km from the middle of the area, began a volume at 04:26 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
Oct 11, 12:20 AM CDT	TSTM WND DMG	3 Wnw Broken Bow, OK	TREES DOWN ON VEHICLE 3 MILES WEST OF BROKEN BOW ON HWY 3.
Oct 11, 12:24 AM CDT	TSTM WND DMG	3 W Idabel, OK	TREE REPORTED DOWN EAST OF IDABEL.
Oct 11, 12:40 AM CDT	TSTM WND DMG	Haworth, OK	TREE REPORTED DOWN ON 6TH STREET.

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
Oct 10, 11:07 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 4.4 hours before the alert went out and 174 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: 193 J/kg
Mixed-layer CIN: -245 J/kg
Mixed-layer LCL: 1467 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

541 
WUUS54 KSHV 110424
SVRSHV
OKC089-TXC037-159-343-387-449-110530-
/O.NEW.KSHV.SV.W.0192.211011T0424Z-211011T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
1124 PM CDT Sun Oct 10 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  McCurtain County in southeastern Oklahoma...
  Northern Franklin County in northeastern Texas...
  Western Bowie County in northeastern Texas...
  Northern Morris County in northeastern Texas...
  Titus County in northeastern Texas...
  Red River County in northeastern Texas...

* Until 1230 AM CDT.

* At 1123 PM CDT, severe thunderstorms were located along a line
  extending from near Raymond Gary State Park to 7 miles southeast of
  Paris to 6 miles northwest of Sulphur Springs, moving east at 45
  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...
  Mount Pleasant, Clarksville, Hagansport, Boxelder, Idabel, Broken
  Bow, Mount Vernon, De Kalb, Naples, Bogata, Omaha, Us 259 And I 30
  Intersection, Dalby Springs, Cookville, Wilkerson, Bagwell,
  Manchester, Wright City, Valliant and Detroit.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 400 AM CDT for southwestern
Arkansas...southeastern Oklahoma...and northeastern Texas.

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

A Tornado Watch remains in effect until 400 AM CDT for southwestern
Arkansas...southeastern Oklahoma...and northeastern Texas.

&&

LAT...LON 3364 9449 3363 9445 3326 9456 3326 9465
      3315 9466 3316 9531 3386 9531 3391 9528
      3389 9526 3389 9525 3396 9523 3394 9516
      3415 9516 3425 9447
TIME...MOT...LOC 0423Z 254DEG 41KT 3393 9531 3358 9547 3320 9570 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 11:35 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Smith, Titus, Upshur, Wood	55 min
Oct 11, 12:26 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris, Red River, Titus	64 min
Oct 11, 12:33 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Franklin, Gregg, Harrison, Marion and 6 more	57 min
Oct 11, 12:56 AM CDT	Special Weather Statement	SHV	Cherokee, Rusk	49 min
Oct 11, 1:31 AM CDT	Special Weather Statement	SHV	Gregg, Harrison, Marion, Rusk	44 min
Oct 11, 1:35 AM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Rusk, Smith	25 min
Oct 11, 2:11 AM CDT	Special Weather Statement	SHV	Panola	34 min
Oct 11, 2:43 AM CDT	Special Weather Statement	SHV	Nacogdoches, Panola, Shelby	47 min
Oct 11, 4:04 AM CDT	Special Weather Statement	SHV	Sabine, San Augustine	41 min
Oct 11, 4:46 AM CDT	Special Weather Statement	SHV	Sabine	44 min
Oct 10, 11:50 PM CDT	Tornado Warning	SHV	McCurtain	40 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Severe Thunderstorm Warnings in Oklahoma, 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.