Alert archive / Oklahoma / Special Weather Statements in 2017
Special Weather Statement, NWS Shreveport, LA
NWS Shreveport, LA issued this special weather statement at Mar 6, 2017, 10:39 PM CST for McCurtain County, Oklahoma. It was in force for 21 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
- Mar 6, 2017, 10:39 PM CST (04:39 UTC)
- Expired
- Mar 6, 2017, 11:00 PM CST
- In force
- 21 min
- Issued by
- NWS Shreveport, LA
County McCurtain County, OK
The radar
The Western Arkansas radar (KSRX), 106 km from the middle of the area, began a volume at 04:40 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
Norman, OK (KOUN), launched 00:00Z, 4.7 hours before the alert went out and 245 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
- 951 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1724 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 338 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 8.4
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 Mar 6, 10:18 PM CST, 21 minutes earlier.
Area forecast discussion, Mar 6, 10:18 PM CST, 21 minutes before
<!doctype html>
<html lang="en">
<head>
<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.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Hazardous weather outlook, Mar 6, 6:23 PM CST, 4 hours 16 minutes before
Hazardous Weather Outlook National Weather Service Shreveport LA 623 PM CST Mon Mar 6 2017 ARZ050-051-059>061-070>073-LAZ001>004-006-OKZ077-TXZ096-097- 108>112-124>126-136>138-071200- Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette- Columbia-Union-Caddo-Bossier-Webster-Claiborne-McCurtain- Red River-Bowie-Franklin-Titus-Camp-Morris-Cass-Wood-Upshur- Marion-Smith-Gregg-Harrison- 623 PM CST Mon Mar 6 2017 This Hazardous Weather Outlook is for portions of south central Arkansas...southwest Arkansas...north central Louisiana... northwest Louisiana...southeast Oklahoma and northeast Texas. .DAY ONE...Tonight... Isolated thunderstorms are possible for much of tonight. During the overnight hours, a line of strong thunderstorms will develop ahead of an approaching cold front. This line of storms should move into areas north of the Interstate 30 corridor late tonight or early Tuesday morning. Additional scattered thunderstorms will be possible farther south near the Interstate 20 corridor as the front approaches. Some storms may be severe, especially across Southeast Oklahoma and Southwest Arkansas. The primary threat will be damaging winds and large hail. However, an isolated tornado cannot be ruled out. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday... Numerous thunderstorms will be ongoing early Tuesday as the cold front moves southeast. The greatest threat for severe weather will be early Tuesday morning. However, there is still a marginal risk for a few isolated severe thunderstorms during the day Tuesday as the cold front and line of storms advance southeast. Damaging winds will be the primary threat. Significant rain chances will not return until late in the weekend with showers and and thunderstorms increasing ahead of the next cold front arriving late Saturday through early Sunday. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel, amateur radio operators and storm spotters may be necessary during the overnight hours or early Tuesday morning. LAZ005-010>014-017>022-TXZ149>153-165>167-071200- Lincoln-De Soto-Red River-Bienville-Jackson-Ouachita-Sabine- Natchitoches-Winn-Grant-Caldwell-La Salle-Cherokee-Rusk-Panola- Nacogdoches-Shelby-Angelina-San Augustine- 623 PM CST Mon Mar 6 2017 This Hazardous Weather Outlook is for portions of north central Louisiana...northwest Louisiana...east Texas and northeast Texas. .DAY ONE...Tonight... Isolated thunderstorms possibly will be possible tonight. The strongest storms could produce gusty winds. However, no organized severe weather threat is anticipated. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday... Numerous thunderstorms will be ongoing early Tuesday along and advancing cold front. There is a marginal risk for a few isolated severe thunderstorms along the front during the daytime hours of Tuesday. The primary threat will be damaging winds from any organized clusters or bowing line segments. Significant rain chances will not return until late in the weekend with showers and and thunderstorms increasing ahead of the next cold front arriving late Saturday through early Sunday. .SPOTTER INFORMATION STATEMENT... Activation of emergency management personnel, amateur radio operators and storm spotters is not anticipated through tonight. 09
In the hours before
Special weather statement, Mar 6, 10:39 PM CST, 0 minutes before
Special Weather Statement
National Weather Service Shreveport LA
1039 PM CST MON MAR 6 2017
OKZ077-070500-
McCurtain OK-
1039 PM CST MON MAR 6 2017
...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL MCCURTAIN COUNTY
UNTIL 1100 PM CST...
At 1038 PM CST, Doppler radar was tracking a strong thunderstorm 13
miles east of Nashoba, or 22 miles east of Clayton, moving northeast
at 35 mph.
Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Shreveport.
&&
LAT...LON 3451 9479 3441 9470 3429 9496 3443 9505
3451 9505
TIME...MOT...LOC 0438Z 238DEG 31KT 3447 9498
CNThe office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 7, 2:47 AM CST | Special Weather Statement | SHV | Red River | 58 min |
| Mar 7, 3:48 AM CST | Special Weather Statement | SHV | Bowie, Red River | 57 min |
| Mar 7, 4:47 AM CST | Special Weather Statement | SHV | Camp, Cass, Franklin, Marion, Morris, Titus and 1 more | 58 min |
| Mar 7, 4:50 AM CST | Special Weather Statement | SHV | Bowie | 40 min |
| Mar 7, 5:16 AM CST | Special Weather Statement | SHV | Wood | 29 min |
| Mar 7, 5:28 AM CST | Special Weather Statement | SHV | Bowie | 62 min |
| Mar 7, 5:43 AM CST | Special Weather Statement | SHV | Camp, Cass, Franklin, Morris, Titus, Upshur and 1 more | 47 min |
| Mar 7, 6:31 AM CST | Special Weather Statement | SHV | Gregg, Marion, Smith, Upshur | 44 min |
| Mar 7, 12:46 PM CST | Special Weather Statement | SHV | Sabine | 29 min |
| Mar 7, 12:56 PM CST | Severe Thunderstorm Warning | SHV | Sabine | 34 min |
| Mar 7, 6:28 AM CST | Special Weather Statement | SHV | Columbia, Lafayette | 47 min |
| Mar 7, 2:01 AM CST | Special Weather Statement | SHV | McCurtain | 44 min |
Nearby
Special Weather Statements in Oklahoma, 2017Every special weather statement in 2017
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.