Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 103, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Apr 23, 2021, 5:01 PM CDT for Angelina County, Sabine County, San Augustine County, Texas. It was in force for 44 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
- Apr 23, 2021, 5:01 PM CDT (22:01 UTC)
- Expired
- Apr 23, 2021, 5:45 PM CDT
- In force
- 44 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Angelina County, TX, Sabine County, TX, San Augustine County, TX
The radar
The Ft Polk radar (KPOE), 119 km from the middle of the area, began a volume at 22:00 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 23, 2:00 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 10.0 hours before the alert went out and 150 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
- 912 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 232 m²/s²
- 0-3 km storm-relative helicity
- 252 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
150
WUUS54 KSHV 232201
SVRSHV
TXC005-403-405-232245-
/O.NEW.KSHV.SV.W.0103.210423T2201Z-210423T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
501 PM CDT Fri Apr 23 2021
The National Weather Service in Shreveport has issued a
* Severe Thunderstorm Warning for...
Southeastern Angelina County in eastern Texas...
Southern San Augustine County in eastern Texas...
Southwestern Sabine County in eastern Texas...
* Until 545 PM CDT.
* At 501 PM CDT, a severe thunderstorm was located near Rockland,
moving northeast at 50 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...
Pineland, Macune, Rosevine, Zavalla, Broaddus, Bronson, McElroy,
Dolan and Chinaquapin.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 900 PM CDT for eastern Texas.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3111 9452 3125 9436 3122 9433 3123 9432
3124 9434 3128 9433 3152 9406 3124 9380
3114 9399 3114 9404 3112 9404 3111 9406
3103 9444
TIME...MOT...LOC 2201Z 230DEG 43KT 3108 9435
HAIL...1.00IN
WIND...60MPH
$$
44The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 2:21 PM CDT | Lake Wind Advisory | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 17 hr |
| Apr 23, 2:42 PM CDT | Flash Flood Watch | SHV | Angelina, Nacogdoches, Sabine, San Augustine, Shelby | 15 hr |
| Apr 23, 5:58 PM CDT | Special Weather Statement | SHV | Titus | 47 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.