Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 148, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 11, 2021, 2:21 PM CDT for 5 counties in Texas. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 11, 2021, 2:21 PM CDT (19:21 UTC)
- Expired
- May 11, 2021, 2:58 PM CDT
- In force
- 37 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Gregg County, TX, Harrison County, TX, Rusk County, TX, Smith County, TX, Upshur County, TX
The radar
The Shreveport radar (KSHV), 87 km from the middle of the area, began a volume at 19:21 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.
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 7.4 hours before the alert went out and 95 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 605 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 438 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.4
The text
As transmitted.
879
WUUS54 KSHV 111921
SVRSHV
TXC183-203-401-423-459-112015-
/O.NEW.KSHV.SV.W.0148.210511T1921Z-210511T2015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
221 PM CDT Tue May 11 2021
The National Weather Service in Shreveport has issued a
* Severe Thunderstorm Warning for...
East central Smith County in northeastern Texas...
Western Harrison County in northeastern Texas...
Northwestern Rusk County in northeastern Texas...
Southeastern Upshur County in northeastern Texas...
Gregg County in northeastern Texas...
* Until 315 PM CDT.
* At 221 PM CDT, a severe thunderstorm was located near New London,
or near Kilgore, moving northeast at 40 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...
Longview, Marshall, Henderson, Kilgore, White Oak, Gladewater,
Hallsville, Overton, New London, Clarksville City, East Mountain,
Harleton, Diana, Liberty City, Joinerville, Lakeport, Easton, Union
Grove, Warren City and Nesbitt.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3212 9484 3233 9513 3279 9470 3258 9429
TIME...MOT...LOC 1921Z 221DEG 36KT 3231 9484
HAIL...1.00IN
WIND...60MPH
$$
192 follow-up statements
262
WWUS54 KSHV 111942
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
242 PM CDT Tue May 11 2021
TXC423-459-111952-
/O.CAN.KSHV.SV.W.0148.000000T0000Z-210511T2015Z/
Smith TX-Upshur TX-
242 PM CDT Tue May 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SMITH AND
SOUTHEASTERN UPSHUR COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3225 9469 3237 9484 3269 9450 3258 9429
TIME...MOT...LOC 1942Z 221DEG 36KT 3247 9467
$$
TXC183-203-401-112015-
/O.CON.KSHV.SV.W.0148.000000T0000Z-210511T2015Z/
Harrison TX-Rusk TX-Gregg TX-
242 PM CDT Tue May 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR SOUTHWESTERN HARRISON...NORTH CENTRAL RUSK AND SOUTHEASTERN GREGG
COUNTIES...
At 242 PM CDT, a severe thunderstorm was located near Hallsville, or
near Longview, moving northeast at 40 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...
Longview, Marshall, Hallsville, Lakeport, Easton, Nesbitt, Chalk
Hill, Monroe, Oak Hill and Stewart.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3225 9469 3237 9484 3269 9450 3258 9429
TIME...MOT...LOC 1942Z 221DEG 36KT 3247 9467
HAIL...1.00IN
WIND...60MPH
$$
19940
WWUS54 KSHV 111958
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
258 PM CDT Tue May 11 2021
TXC183-203-401-112008-
/O.CAN.KSHV.SV.W.0148.000000T0000Z-210511T2015Z/
Harrison TX-Rusk TX-Gregg TX-
258 PM CDT Tue May 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HARRISON...NORTH
CENTRAL RUSK AND SOUTHEASTERN GREGG COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has weakened and
moved out of the warned area. Therefore, the warning has been
cancelled.
LAT...LON 3225 9469 3237 9484 3269 9450 3258 9429
TIME...MOT...LOC 1952Z 221DEG 36KT 3259 9454
$$
19The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:47 PM CDT | River Flood Warning | SHV | Gregg | 64 hr |
| May 10, 8:41 PM CDT | Special Weather Statement | SHV | Camp, Morris, Upshur, Wood | 64 min |
| May 10, 9:27 PM CDT | Special Weather Statement | SHV | Harrison, Marion | 48 min |
| May 10, 9:29 PM CDT | Severe Thunderstorm Warning | SHV | Red River | 46 min |
| May 11, 12:57 AM CDT | Special Weather Statement | SHV | Smith | 48 min |
| May 11, 1:12 AM CDT | Special Weather Statement | SHV | Wood | 48 min |
| May 11, 2:04 AM CDT | Flash Flood Watch | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 24 hr |
| May 11, 2:38 AM CDT | Special Weather Statement | SHV | Gregg | 52 min |
| May 11, 3:20 AM CDT | Special Weather Statement | SHV | Harrison | 40 min |
| May 11, 3:28 AM CDT | Areal Flood Advisory | SHV | Harrison | 4 hr |
| May 11, 8:04 AM CDT | River Flood Warning | SHV | Anderson, Cherokee, Houston | 36 days |
| May 11, 9:22 AM CDT | River Flood Warning | SHV | Gregg, Smith, Upshur, Wood | 39 days |
| May 11, 9:25 AM CDT | River Flood Warning | SHV | Franklin, Morris, Red River, Titus | 3 days |
| May 11, 9:25 AM CDT | River Flood Warning | SHV | Franklin, Morris, Titus | 5 days |
| May 11, 11:15 AM CDT | Special Weather Statement | SHV | Cherokee | 45 min |
| May 11, 11:59 AM CDT | Special Weather Statement | SHV | Cherokee | 31 min |
| May 11, 12:31 PM CDT | Special Weather Statement | SHV | Cherokee | 44 min |
| May 11, 1:32 PM CDT | Special Weather Statement | SHV | Smith | 43 min |
| May 11, 1:34 PM CDT | Special Weather Statement | SHV | Gregg | 41 min |
| May 11, 2:12 PM CDT | Special Weather Statement | SHV | Cass, Marion | 48 min |
| May 11, 2:15 PM CDT | Special Weather Statement | SHV | Harrison | 45 min |
| May 11, 2:50 PM CDT | Special Weather Statement | SHV | Cherokee, Smith | 40 min |
| May 11, 2:56 PM CDT | Severe Thunderstorm Warning | SHV | Gregg, Harrison, Panola, Rusk | 17 min |
| May 11, 3:01 PM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Gregg, Rusk, Smith | 48 min |
| May 11, 3:59 PM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Gregg, Harrison, Nacogdoches, Panola, Rusk and 1 more | 61 min |
| May 11, 4:18 PM CDT | Severe Thunderstorm Warning | SHV | Angelina, Cherokee | 42 min |
| May 11, 5:01 PM CDT | Special Weather Statement | SHV | Angelina | 59 min |
| May 11, 6:00 PM CDT | Special Weather Statement | SHV | Angelina | 45 min |
| May 11, 6:14 PM CDT | Severe Thunderstorm Warning | SHV | Angelina | 28 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.