Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 88, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Apr 9, 2021, 11:42 PM CDT for 9 counties in Texas; Caddo Parish, Louisiana; Miller County, Arkansas. It was in force for 63 min. 1 report 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, 11:42 PM CDT (04:42 UTC)
- Expired
- Apr 10, 2021, 12:45 AM CDT
- In force
- 63 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Miller County, AR, Caddo Parish, LA, Camp County, TX, Cass County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Titus County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 77 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, 12:50 AM CDT | HAIL 0.7 | Longview, TX | PUBLIC REPORTS DIME SIZE HAIL IN LONGVIEW VIA SOCIAL MEDIA. |
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, 4.7 hours before the alert went out and 79 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.
- 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
The text
As transmitted.
271
WUUS54 KSHV 100442
SVRSHV
ARC091-LAC017-TXC063-067-159-183-203-315-343-449-459-100545-
/O.NEW.KSHV.SV.W.0088.210410T0442Z-210410T0545Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
1142 PM CDT Fri Apr 9 2021
The National Weather Service in Shreveport has issued a
* Severe Thunderstorm Warning for...
Southwestern Miller County in southwestern Arkansas...
Northwestern Caddo Parish in northwestern Louisiana...
Marion County in northeastern Texas...
Cass County in northeastern Texas...
Harrison County in northeastern Texas...
Southeastern Franklin County in northeastern Texas...
Upshur County in northeastern Texas...
Morris County in northeastern Texas...
Titus County in northeastern Texas...
Camp County in northeastern Texas...
Gregg County in northeastern Texas...
* Until 1245 AM CDT.
* At 1142 PM CDT, severe thunderstorms were located along a line
extending from 8 miles south of Maud to 7 miles north of Linden to
Hughes Springs to 7 miles southeast of Pittsburg to 8 miles
northwest of Rosewood, moving southeast at 55 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Longview, Marshall, Mount Pleasant, Kilgore, White Oak, Gladewater,
Atlanta, Gilmer, Pittsburg, Leesburg, Vivian, Hallsville, Mount
Vernon, Daingerfield, Jefferson, Linden, Hughes Springs, Lone Star,
Queen City and Naples.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3335 9479 3335 9478 3334 9479 3325 9462
3329 9447 3324 9426 3330 9420 3327 9404
3329 9401 3301 9382 3295 9384 3294 9381
3285 9380 3285 9378 3278 9382 3280 9379
3279 9379 3251 9416 3237 9489 3318 9523
TIME...MOT...LOC 0442Z 328DEG 46KT 3322 9429 3312 9440 3301 9460 3291
9489 3284 9518
HAIL...0.75IN
WIND...60MPH
$$
191 follow-up statement
525
WWUS54 KSHV 100535
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
1235 AM CDT Sat Apr 10 2021
TXC159-100545-
/O.CAN.KSHV.SV.W.0088.000000T0000Z-210410T0545Z/
Franklin TX-
1235 AM CDT Sat Apr 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FRANKLIN COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
northwestern Louisiana...and northeastern Texas. A Severe
Thunderstorm Watch also remains in effect until 200 AM CDT for
southwestern Arkansas...and northeastern Texas.
LAT...LON 3327 9404 3329 9401 3301 9382 3295 9384
3294 9381 3285 9380 3285 9378 3278 9382
3280 9379 3279 9379 3251 9416 3237 9489
3290 9511
TIME...MOT...LOC 0535Z 270DEG 46KT 3267 9389 3257 9400 3246 9420 3236
9449 3229 9477
$$
ARC091-LAC017-TXC063-067-183-203-315-343-449-459-100545-
/O.CON.KSHV.SV.W.0088.000000T0000Z-210410T0545Z/
Miller AR-Caddo LA-Marion TX-Cass TX-Harrison TX-Upshur TX-Morris TX-
Titus TX-Camp TX-Gregg TX-
1235 AM CDT Sat Apr 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR SOUTHWESTERN MILLER COUNTY...NORTHWESTERN CADDO PARISH...
MARION...CASS...HARRISON...UPSHUR...SOUTHERN MORRIS...SOUTHEASTERN
TITUS...SOUTHEASTERN CAMP AND GREGG COUNTIES...
At 1235 AM CDT, severe thunderstorms were located along a line
extending from near Mooringsport to 6 miles west of Blanchard to 6
miles north of Elysian Fields to near Tatum to 8 miles southeast of
Kilgore, moving southeast at 55 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Longview, Marshall, Kilgore, White Oak, Gladewater, Atlanta, Gilmer,
Vivian, Hallsville, Daingerfield, Jefferson, Linden, Hughes Springs,
Lone Star, Queen City, Ore City, Oil City, Clarksville City, East
Mountain and Mooringsport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3327 9404 3329 9401 3301 9382 3295 9384
3294 9381 3285 9380 3285 9378 3278 9382
3280 9379 3279 9379 3251 9416 3237 9489
3290 9511
TIME...MOT...LOC 0535Z 270DEG 46KT 3267 9389 3257 9400 3246 9420 3236
9449 3229 9477
HAIL...0.75IN
WIND...60MPH
$$
19The 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, 11:47 PM CDT | Severe Thunderstorm Warning | SHV | Camp, Franklin, Gregg, Smith, Upshur, Wood | 43 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 |
| Apr 9, 7:03 PM CDT | Special Weather Statement | SHV | Jackson | 42 min |
| Apr 9, 7:11 PM CDT | Severe Thunderstorm Warning | SHV | De Soto, Natchitoches, Red River, Sabine | 64 min |
| Apr 9, 7:18 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Jackson, Ouachita | 42 min |
| Apr 9, 7:30 PM CDT | Special Weather Statement | SHV | Union | 45 min |
| Apr 9, 7:35 PM CDT | Flash Flood Warning | SHV | Caldwell, Jackson, Lincoln, Ouachita, Union, Winn | 3 hr |
| Apr 9, 7:35 PM CDT | Special Weather Statement | SHV | Webster | 40 min |
| Apr 9, 7:40 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Natchitoches, Red River, Winn | 42 min |
| Apr 9, 7:50 PM CDT | Special Weather Statement | SHV | Claiborne, Lincoln | 40 min |
| Apr 9, 7:55 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Grant, Jackson, Natchitoches, Winn | 65 min |
| Apr 9, 7:57 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Ouachita | 22 min |
| Apr 9, 8:33 PM CDT | Special Weather Statement | SHV | Claiborne, Webster | 42 min |
| Apr 9, 8:43 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell, Ouachita, Winn | 62 min |
| Apr 9, 8:50 PM CDT | Special Weather Statement | SHV | Natchitoches | 55 min |
| Apr 9, 9:32 PM CDT | Special Weather Statement | SHV | Grant, LaSalle | 58 min |
| Apr 9, 10:27 PM CDT | Severe Thunderstorm Warning | SHV | Grant, LaSalle | 40 min |
| Apr 9, 10:40 PM CDT | Special Weather Statement | SHV | Ouachita, Winn | 50 min |
| Apr 10, 12:23 AM CDT | Special Weather Statement | SHV | Bossier, Caddo, Webster | 67 min |
| Apr 10, 12:32 AM CDT | Special Weather Statement | SHV | LaSalle | 43 min |
| Apr 10, 12:41 AM CDT | Special Weather Statement | SHV | Claiborne, Lincoln, Union | 49 min |
| Apr 10, 12:45 AM CDT | Severe Thunderstorm Warning | SHV | LaSalle | 45 min |
| Apr 10, 12:46 AM CDT | Special Weather Statement | SHV | Sabine | 29 min |
| Apr 9, 11:24 PM CDT | Tornado Warning | SHV | Little River | 36 min |
| Apr 9, 11:40 PM CDT | Tornado Warning | SHV | Hempstead, Little River, Miller, Nevada | 50 min |
| Apr 9, 11:55 PM CDT | Severe Thunderstorm Warning | SHV | Columbia, Hempstead, Lafayette, Miller, Nevada | 65 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2021Severe Thunderstorm Warnings in Louisiana, 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.