Alert archive / Louisiana / Special Weather Statements in 2021
Special Weather Statement, NWS New Orleans, LA
NWS New Orleans, LA issued this special weather statement at Jun 6, 2021, 9:57 AM CDT for Plaquemines Parish, Louisiana. It was in force for 33 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
- Jun 6, 2021, 9:57 AM CDT (14:57 UTC)
- Expired
- Jun 6, 2021, 10:30 AM CDT
- In force
- 33 min
- Issued by
- NWS New Orleans, LA
County Plaquemines Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 3.0 hours before the alert went out and 100 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
- 1791 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 571 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 181 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 9.7
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 New Orleans, LA wrote its last area forecast discussion before this special weather statement went out at Jun 6, 4:57 AM CDT, 5 hours earlier.
Area forecast discussion, Jun 6, 4:57 AM CDT, 5 hours before
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<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.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>In the hours before
Special weather statement, Jun 6, 9:57 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service New Orleans LA
957 AM CDT Sun Jun 6 2021
LAZ068-069-061530-
Lower Plaquemines-Lower Jefferson-
957 AM CDT Sun Jun 6 2021
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL PLAQUEMINES
PARISH...
At 956 AM CDT, radar indicated strong thunderstorms were located
along a line extending from 17 miles southwest of Port Sulphur to 9
miles south of Empire. Movement was northeast at 35 mph.
Winds in excess of 40 mph are possible with these storms.
Locations impacted include...
Buras, Empire and Buras-triumph.
Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 2929 8967 2933 8964 2932 8983 2934 8978
2934 8982 2928 8998 2929 8997 2934 8984
2939 8986 2937 8979 2943 8982 2941 8987
2948 8985 2934 9002 2944 8990 2951 8994
2938 8946 2924 8958
TIME...MOT...LOC 1456Z 208DEG 40KT 2934 8994 2928 8966
ABSThe office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 8:25 AM CDT | Special Marine Warning | LIX | 95 min | |
| Jun 6, 8:27 AM CDT | Special Marine Warning | LIX | 34 min | |
| Jun 6, 9:07 AM CDT | Tornado Warning | LIX | Ascension, Livingston, Saint James, Tangipahoa | 14 min |
| Jun 6, 9:23 AM CDT | Tornado Warning | LIX | Plaquemines | 23 min |
| Jun 6, 10:01 AM CDT | Tornado Warning | LIX | Plaquemines | 32 min |
| Jun 6, 10:14 AM CDT | Special Marine Warning | LIX | 91 min | |
| Jun 6, 10:26 AM CDT | Special Marine Warning | LIX | 64 min | |
| Jun 6, 10:38 AM CDT | Special Weather Statement | LIX | Plaquemines | 52 min |
| Jun 6, 10:46 AM CDT | Areal Flood Advisory | LIX | Ascension, East Baton Rouge, Iberville, West Baton Rouge | 4 hr |
| Jun 6, 11:28 AM CDT | Special Marine Warning | LIX | 32 min | |
| Jun 6, 11:32 AM CDT | Special Weather Statement | LIX | Saint Bernard | 43 min |
| Jun 6, 11:44 AM CDT | Special Marine Warning | LIX | 61 min | |
| Jun 6, 11:51 AM CDT | Areal Flood Advisory | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Tangipahoa | 3 hr |
| Jun 6, 11:58 AM CDT | Flash Flood Warning | LIX | Tangipahoa, Washington | 3 hr |
| Jun 6, 12:22 PM CDT | Special Marine Warning | LIX | 23 min | |
| Jun 6, 12:46 PM CDT | Special Weather Statement | LIX | Lafourche | 29 min |
| Jun 6, 12:53 PM CDT | Special Weather Statement | LIX | Tangipahoa | 52 min |
| Jun 6, 12:57 PM CDT | Special Marine Warning | LIX | 63 min | |
| Jun 6, 1:52 PM CDT | Special Marine Warning | LIX | 23 min | |
| Jun 6, 1:59 PM CDT | Special Marine Warning | LIX | 61 min | |
| Jun 6, 2:15 PM CDT | Special Marine Warning | LIX | 45 min | |
| Jun 6, 3:01 PM CDT | Special Marine Warning | LIX | 59 min | |
| Jun 6, 3:07 PM CDT | Special Marine Warning | LIX | 53 min | |
| Jun 6, 3:22 PM CDT | Special Marine Warning | LIX | 38 min | |
| Jun 6, 3:41 PM CDT | Special Marine Warning | LIX | 19 min | |
| Jun 6, 3:59 PM CDT | Special Marine Warning | LIX | 61 min | |
| Jun 6, 4:39 PM CDT | Special Marine Warning | LIX | 31 min | |
| Jun 6, 4:52 PM CDT | Special Marine Warning | LIX | 83 min | |
| Jun 6, 5:36 PM CDT | Special Marine Warning | LIX | 39 min | |
| Jun 6, 10:23 AM CDT | River Flood Warning | LIX | Harrison | 47 hr |
| Jun 6, 10:26 AM CDT | River Flood Warning | LIX | Harrison | 39 hr |
| Jun 6, 10:52 AM CDT | River Flood Warning | LIX | Harrison | 30 hr |
| Jun 6, 2:48 PM CDT | River Flood Warning | LIX | Pike | 41 hr |
| Jun 6, 4:30 PM CDT | Special Weather Statement | LIX | Harrison | 30 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.