Alert archive / Louisiana / Special Weather Statements in 2021
Special Weather Statement, NWS Shreveport, LA
NWS Shreveport, LA issued this special weather statement at Aug 17, 2021, 10:43 PM CDT for De Soto Parish, Louisiana. It was in force for 32 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 17, 2021, 10:43 PM CDT (03:43 UTC)
- Expired
- Aug 17, 2021, 11:15 PM CDT
- In force
- 32 min
- Issued by
- NWS Shreveport, LA
- Hail
- 0.00 in
- Wind
- 40
County De Soto Parish, LA
The radar
The Shreveport radar (KSHV), 43 km from the middle of the area, began a volume at 03:42 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 00:00Z, 3.7 hours before the alert went out and 42 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
- 1110 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1333 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at Aug 17, 10:14 PM CDT, 29 minutes earlier.
Area forecast discussion, Aug 17, 10:14 PM CDT, 29 minutes before
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</html>Hazardous weather outlook, Aug 17, 1:09 PM CDT, 9 hours 34 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 109 PM CDT Tue Aug 17 2021 ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077- TXZ096-097-108>112-124>126-136>138-149>153-165>167-181815- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto- Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn- Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp- Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk- Panola-Nacogdoches-Shelby-Angelina-San Augustine- 109 PM CDT Tue Aug 17 2021 This Hazardous Weather Outlook is for portions of south central Arkansas, southwest Arkansas, north central Louisiana, northwest Louisiana, southeast Oklahoma, east Texas and northeast Texas. .DAY ONE...This Afternoon and Tonight... Scattered showers and thunderstorms will continue this afternoon through the early evening hours. Brief gusty winds, frequent lightning, and pockets of torrential downpours will be possible with some storms, and the possibility of flash flooding remains a threat in areas of prolonged heavy rainfall. Storms are generally not anticipated to be severe. .DAYS TWO THROUGH SEVEN...Wednesday through Monday... Scattered to numerous, mainly afternoon, thunderstorms are expected on Thursday before activity generally decreases Friday through the weekend. Severe thunderstorms are generally not anticipated, although some storms could continue to produce frequent lightning, heavy downpours, and brief gusty winds. Hot temperatures are expected to return this weekend with heat indices nearing Heat Advisory criteria late this weekend into early next week. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel...amateur radio operators...and storm spotters is not anticipated at this time. 26
In the hours before
Special weather statement, Aug 17, 7:14 PM CDT, 3 hours 29 minutes before
Special Weather Statement
National Weather Service Shreveport LA
714 PM CDT Tue Aug 17 2021
TXZ124-136-180045-
Smith TX-Wood TX-
714 PM CDT Tue Aug 17 2021
...Strong thunderstorms will impact portions of northwestern Smith
and southwestern Wood Counties through 745 PM CDT...
At 714 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Grand Saline to near Edom. Movement was
east at 20 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Mineola, Lindale, Hoard and Carroll.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
These storms 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 3270 9559 3273 9548 3243 9524 3237 9547
3239 9550 3242 9551 3248 9559
TIME...MOT...LOC 0014Z 253DEG 19KT 3259 9570 3239 9555
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
24Special weather statement, Aug 17, 7:58 PM CDT, 2 hours 45 minutes before
Special Weather Statement
National Weather Service Shreveport LA
758 PM CDT Tue Aug 17 2021
TXZ124-180200-
Wood TX-
758 PM CDT Tue Aug 17 2021
...Strong thunderstorms will impact portions of Wood County through
900 PM CDT...
At 757 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Golden to near Hoard. Movement was northeast at
20 mph.
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...
Mineola, Winnsboro, Quitman, Pleasant Grove, Hoard, Hainesville,
Golden, Forest Hill, Yantis and Perryville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3296 9556 3296 9515 3276 9515 3260 9533
3261 9536 3260 9538 3261 9542 3261 9546
3270 9560 3270 9561
TIME...MOT...LOC 0057Z 222DEG 17KT 3273 9557 3263 9536
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
24Special weather statement, Aug 17, 8:02 PM CDT, 2 hours 41 minutes before
Special Weather Statement
National Weather Service Shreveport LA
802 PM CDT Tue Aug 17 2021
LAZ005-012-013-180200-
Bienville LA-Lincoln LA-Jackson LA-
802 PM CDT Tue Aug 17 2021
...Strong thunderstorms will impact portions of northern Jackson,
northeastern Bienville and southern Lincoln Parishes through 900 PM
CDT...
At 802 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Gibsland to near Jonesboro. Movement was
east at 20 mph.
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...
Ruston, Grambling, Arcadia, Choudrant, Simsboro, Hodge, North Hodge,
Vienna, East Hodge, Quitman, Eros, Bryceland and Mount Lebanon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
These storms 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 3225 9277 3250 9307 3258 9295 3259 9288
3261 9287 3264 9286 3269 9279 3259 9251
3239 9240
TIME...MOT...LOC 0102Z 251DEG 19KT 3250 9302 3229 9277
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
24Special weather statement, Aug 17, 8:09 PM CDT, 2 hours 34 minutes before
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</html>Special weather statement, Aug 17, 9:54 PM CDT, 49 minutes before
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</html>Special weather statement, Aug 17, 10:43 PM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 7:14 PM CDT | Special Weather Statement | SHV | Smith | 31 min |
| Aug 17, 7:33 PM CDT | Severe Thunderstorm Warning | SHV | Smith, Wood | 57 min |
| Aug 17, 7:58 PM CDT | Special Weather Statement | SHV | Wood | 62 min |
| Aug 17, 8:09 PM CDT | Special Weather Statement | SHV | Smith | 51 min |
| Aug 18, 3:00 AM CDT | Areal Flood Advisory | SHV | Panola, Rusk, Shelby | 3 hr |
| Aug 18, 4:46 AM CDT | Areal Flood Advisory | SHV | Smith | 3 hr |
| Aug 18, 5:35 AM CDT | Flash Flood Warning | SHV | Smith | 3 hr |
| Aug 17, 7:11 PM CDT | Special Weather Statement | SHV | Bienville | 34 min |
| Aug 17, 8:02 PM CDT | Special Weather Statement | SHV | Lincoln | 58 min |
| Aug 17, 9:54 PM CDT | Special Weather Statement | SHV | Bossier | 51 min |
| Aug 18, 4:02 PM CDT | Special Weather Statement | SHV | Winn | 28 min |
| Aug 18, 4:41 PM CDT | Special Weather Statement | SHV | Webster | 34 min |
| Aug 18, 5:30 PM CDT | Areal Flood Advisory | SHV | Bossier, Caddo, De Soto | 2 hr |
| Aug 18, 6:50 PM CDT | Special Weather Statement | SHV | Ouachita | 25 min |
| Aug 18, 6:47 PM CDT | Special Weather Statement | SHV | Union | 43 min |
Nearby
Special Weather Statements in Louisiana, 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.