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, 5:31 PM CDT for Claiborne Parish, Louisiana. It was in force for 29 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, 5:31 PM CDT (22:31 UTC)
- Expired
- Aug 17, 2021, 6:00 PM CDT
- In force
- 29 min
- Issued by
- NWS Shreveport, LA
- Hail
- 0.00 in
- Wind
- 40
County Claiborne Parish, LA
The radar
The Shreveport radar (KSHV), 68 km from the middle of the area, began a volume at 22:34 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, 10.5 hours before the alert went out and 59 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
- 1120 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 884 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, 2:09 PM CDT, 3 hours 22 minutes earlier.
Area forecast discussion, Aug 17, 2:09 PM CDT, 3 hours 22 minutes before
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<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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</html>Hazardous weather outlook, Aug 17, 1:09 PM CDT, 4 hours 22 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, 5:03 PM CDT, 28 minutes before
Special Weather Statement
National Weather Service Shreveport LA
503 PM CDT Tue Aug 17 2021
TXZ124-172230-
Wood TX-
503 PM CDT Tue Aug 17 2021
...A strong thunderstorm will impact portions of northwestern Wood
County through 530 PM CDT...
At 502 PM CDT, Doppler radar was tracking a strong thunderstorm near
Golden, or 11 miles northwest of Mineola, moving northeast at 10 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...
Quitman, Pleasant Grove, Golden, Forest Hill, Alba and Yantis.
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.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
If on or near Lake Fork, get out of the water and move indoors or
inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
&&
LAT...LON 3296 9542 3293 9529 3269 9553 3274 9564
3296 9566
TIME...MOT...LOC 2202Z 211DEG 8KT 3281 9558
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
24Special weather statement, Aug 17, 5:31 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Shreveport LA
531 PM CDT Tue Aug 17 2021
LAZ003-004-012-172300-
Bienville LA-Claiborne LA-Webster LA-
531 PM CDT Tue Aug 17 2021
...A strong thunderstorm will impact portions of east central
Webster, southwestern Claiborne and north central Bienville Parishes
through 600 PM CDT...
At 530 PM CDT, Doppler radar was tracking a strong thunderstorm near
Minden, moving north at 5 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...
Minden, Sibley, Dubberly, Athens, Spring Lake, Holly Springs and Ada.
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.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
If on or near Lake Claiborne, get out of the water and move indoors
or inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
&&
LAT...LON 3252 9310 3256 9331 3275 9330 3274 9290
TIME...MOT...LOC 2230Z 193DEG 6KT 3262 9319
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
24The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 5:03 PM CDT | Special Weather Statement | SHV | Wood | 27 min |
| Aug 17, 5:58 PM CDT | Special Weather Statement | SHV | Upshur | 32 min |
| Aug 17, 6:00 PM CDT | Special Weather Statement | SHV | Claiborne | 30 min |
| Aug 17, 7:57 AM CDT | Areal Flood Advisory | SHV | McCurtain | 106 min |
| Aug 17, 9:43 AM CDT | Flash Flood Warning | SHV | McCurtain | 2 hr |
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.