Alert archive / Texas / Special Weather Statements in 2021
Special Weather Statement, NWS Shreveport, LA
NWS Shreveport, LA issued this special weather statement at Aug 14, 2021, 3:21 PM CDT for Shelby County, Texas. It was in force for 39 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
- Aug 14, 2021, 3:21 PM CDT (20:21 UTC)
- Expired
- Aug 14, 2021, 4:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Shreveport, LA
- Hail
- 0.00 in
- Wind
- 40
County Shelby County, TX
The radar
The Shreveport radar (KSHV), 90 km from the middle of the area, began a volume at 20:22 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, 8.4 hours before the alert went out and 97 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
- 1160 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 988 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- -76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
027
WWUS84 KSHV 142021
SPSSHV
Special Weather Statement
National Weather Service Shreveport LA
321 PM CDT Sat Aug 14 2021
TXZ152-153-166-142100-
Nacogdoches TX-San Augustine TX-Shelby TX-
321 PM CDT Sat Aug 14 2021
...A strong thunderstorm will impact portions of northeastern
Nacogdoches, western Shelby and northwestern San Augustine Counties
through 400 PM CDT...
At 321 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Center. This storm was nearly stationary.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Center, San Augustine, Timpson, Melrose, Martinsville, Arcadia,
Jericho and Stockman.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional
information and possible warnings from the National Weather Service.
&&
LAT...LON 3193 9440 3190 9422 3149 9411 3156 9455
TIME...MOT...LOC 2021Z 356DEG 1KT 3174 9432
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
15The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 12:31 AM CDT | Areal Flood Advisory | SHV | Red River | 3 hr |
| Aug 14, 6:52 AM CDT | Areal Flood Advisory | SHV | Red River | 3 hr |
| Aug 14, 3:28 PM CDT | Special Weather Statement | SHV | Smith | 47 min |
| Aug 14, 3:56 PM CDT | Special Weather Statement | SHV | Smith | 49 min |
| Aug 14, 4:26 PM CDT | Areal Flood Advisory | SHV | Smith | 2 hr |
| Aug 14, 4:38 PM CDT | Special Weather Statement | SHV | Panola | 37 min |
| Aug 14, 4:43 PM CDT | Severe Thunderstorm Warning | SHV | Panola, Shelby | 47 min |
| Aug 14, 5:22 PM CDT | Special Weather Statement | SHV | Panola | 38 min |
| Aug 14, 6:00 PM CDT | Special Weather Statement | SHV | Panola | 30 min |
| Aug 14, 2:40 PM CDT | Areal Flood Advisory | SHV | Ouachita, Union | 3 hr |
| Aug 13, 10:49 PM CDT | Special Weather Statement | SHV | McCurtain | 41 min |
Nearby
Special Weather Statements in Texas, 2021Every special weather statement 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.