Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 199, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Oct 27, 2021, 9:53 AM CDT for 4 counties in Texas. It was in force for 52 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
- Oct 27, 2021, 9:53 AM CDT (14:53 UTC)
- Expired
- Oct 27, 2021, 10:45 AM CDT
- In force
- 52 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Gregg County, TX, Harrison County, TX, Panola County, TX, Rusk County, TX
The radar
The Shreveport radar (KSHV), 52 km from the middle of the area, began a volume at 14:54 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 27, 10:00 AM CDT | TSTM WND DMG | 3 Ne Tatum, TX | TREE REPORTED DOWN IN THE NW PART OF THE COUNTY. |
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, 2.9 hours before the alert went out and 60 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
- 395 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 557 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 233 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted.
718
WUUS54 KSHV 271453
SVRSHV
TXC183-203-365-401-271545-
/O.NEW.KSHV.SV.W.0199.211027T1453Z-211027T1545Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
953 AM CDT Wed Oct 27 2021
The National Weather Service in Shreveport has issued a
* Severe Thunderstorm Warning for...
Harrison County in northeastern Texas...
Northwestern Panola County in northeastern Texas...
Northeastern Rusk County in northeastern Texas...
Eastern Gregg County in northeastern Texas...
* Until 1045 AM CDT.
* At 953 AM CDT, severe thunderstorms were located along a line
extending from near Ore City to Harleton to near Hallsville to 13
miles southwest of Marshall to near Tatum, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Longview, Marshall, Hallsville, Tatum, Karnack, Elysian Fields,
Woodlawn, Lakeport, Easton, Scottsville, Nesbitt, Darco, Stewart,
Leigh and Chalk Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3237 9471 3257 9471 3265 9472 3271 9423
3270 9422 3269 9417 3271 9417 3261 9413
3242 9410 3234 9411 3227 9472
TIME...MOT...LOC 1453Z 272DEG 30KT 3278 9464 3266 9458 3254 9456 3243
9454 3231 9455
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
191 follow-up statement
386
WWUS54 KSHV 271525
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
1025 AM CDT Wed Oct 27 2021
TXC183-271534-
/O.CAN.KSHV.SV.W.0199.000000T0000Z-211027T1545Z/
Gregg TX-
1025 AM CDT Wed Oct 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GREGG COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 400 PM CDT for northeastern
Texas.
LAT...LON 3238 9452 3253 9456 3266 9458 3271 9423
3270 9422 3269 9417 3271 9417 3261 9413
3242 9410 3234 9411 3230 9450
TIME...MOT...LOC 1524Z 270DEG 30KT 3277 9441 3265 9435 3253 9433 3242
9431 3230 9432
$$
TXC203-365-401-271545-
/O.CON.KSHV.SV.W.0199.000000T0000Z-211027T1545Z/
Harrison TX-Panola TX-Rusk TX-
1025 AM CDT Wed Oct 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT
FOR HARRISON...NORTHWESTERN PANOLA AND NORTHEASTERN RUSK COUNTIES...
At 1024 AM CDT, severe thunderstorms were located along a line
extending from Berea to Woodlawn to Marshall to 8 miles northwest of
Elysian Fields to 8 miles northeast of Beckville, moving east at 35
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Marshall, Tatum, Karnack, Elysian Fields, Woodlawn, Scottsville,
Nesbitt, Darco and Leigh.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 400 PM CDT for northeastern
Texas.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3238 9452 3253 9456 3266 9458 3271 9423
3270 9422 3269 9417 3271 9417 3261 9413
3242 9410 3234 9411 3230 9450
TIME...MOT...LOC 1524Z 270DEG 30KT 3277 9441 3265 9435 3253 9433 3242
9431 3230 9432
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
16The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 7:19 AM CDT | Special Weather Statement | SHV | Smith, Wood | 26 min |
| Oct 27, 8:38 AM CDT | Special Weather Statement | SHV | Angelina, Nacogdoches | 52 min |
| Oct 27, 9:24 AM CDT | Special Weather Statement | SHV | Rusk | 36 min |
| Oct 27, 9:31 AM CDT | Special Weather Statement | SHV | Angelina, Nacogdoches, San Augustine, Shelby | 59 min |
| Oct 27, 9:41 AM CDT | Special Weather Statement | SHV | Cass, Gregg, Harrison, Marion, Morris, Titus | 64 min |
| Oct 27, 10:01 AM CDT | Tornado Warning | SHV | Harrison | 29 min |
| Oct 27, 10:08 AM CDT | Special Weather Statement | SHV | Panola | 67 min |
| Oct 27, 10:28 AM CDT | Special Weather Statement | SHV | Sabine, San Augustine, Shelby | 62 min |
| Oct 27, 10:44 AM CDT | Severe Thunderstorm Warning | SHV | Cass, Harrison, Marion, Panola | 46 min |
| Oct 27, 10:47 AM CDT | Special Weather Statement | SHV | Bowie, Cass | 58 min |
| Oct 27, 11:06 AM CDT | Severe Thunderstorm Warning | SHV | Shelby | 39 min |
| Oct 27, 3:07 PM CDT | Lake Wind Advisory | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 52 hr |
| Oct 27, 3:07 PM CDT | Wind Advisory | SHV | Angelina, Camp, Cherokee, Franklin, Gregg, Morris and 7 more | 28 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 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.