Alert archive / Louisiana / Special Weather Statements in 2020
Special Weather Statement, NWS New Orleans, LA
NWS New Orleans, LA issued this special weather statement at Aug 19, 2020, 10:40 PM CDT for Orleans Parish, Louisiana. It was in force for 35 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 19, 2020, 10:40 PM CDT (03:40 UTC)
- Expired
- Aug 19, 2020, 11:15 PM CDT
- In force
- 35 min
- Issued by
- NWS New Orleans, LA
County Orleans Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 3.7 hours before the alert went out and 13 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
- 1328 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 1635 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -16 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 New Orleans, LA wrote its last area forecast discussion before this special weather statement went out at Aug 19, 3:41 PM CDT, 6 hours 59 minutes earlier.
Area forecast discussion, Aug 19, 3:41 PM CDT, 6 hours 59 minutes before
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</html>In the hours before
Special weather statement, Aug 19, 7:12 PM CDT, 3 hours 28 minutes before
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</html>Special weather statement, Aug 19, 8:23 PM CDT, 2 hours 17 minutes before
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</html>Special weather statement, Aug 19, 8:25 PM CDT, 2 hours 15 minutes before
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</html>Special weather statement, Aug 19, 9:53 PM CDT, 47 minutes before
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Please try again in a few minutes.
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</html>Special weather statement, Aug 19, 10:08 PM CDT, 32 minutes before
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<div class="status" id="status">Temporary Notice</div>
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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>Special weather statement, Aug 19, 10:40 PM CDT, 0 minutes before
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<main class="wrap">
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<div class="status" id="status">Temporary Notice</div>
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<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>The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 7:12 PM CDT | Special Weather Statement | LIX | Tangipahoa, Washington | 48 min |
| Aug 19, 7:41 PM CDT | Special Marine Warning | LIX | 64 min | |
| Aug 19, 8:23 PM CDT | Special Weather Statement | LIX | Saint Tammany | 37 min |
| Aug 19, 8:25 PM CDT | Special Weather Statement | LIX | Washington | 35 min |
| Aug 19, 9:51 PM CDT | Special Marine Warning | LIX | 39 min | |
| Aug 19, 9:53 PM CDT | Special Weather Statement | LIX | Saint Tammany | 37 min |
| Aug 19, 10:08 PM CDT | Special Weather Statement | LIX | Orleans | 37 min |
| Aug 19, 11:07 PM CDT | Special Marine Warning | LIX | 23 min | |
| Aug 20, 3:15 AM CDT | Special Marine Warning | LIX | 60 min | |
| Aug 20, 4:09 AM CDT | Special Marine Warning | LIX | 66 min | |
| Aug 20, 4:37 AM CDT | Special Weather Statement | LIX | Plaquemines | 38 min |
| Aug 20, 5:39 AM CDT | Special Marine Warning | LIX | 2 hr | |
| Aug 20, 6:07 AM CDT | Special Marine Warning | LIX | 106 min | |
| Aug 20, 7:23 AM CDT | Special Marine Warning | LIX | 67 min | |
| Aug 20, 8:22 AM CDT | Special Marine Warning | LIX | 38 min | |
| Aug 20, 9:01 AM CDT | Special Marine Warning | LIX | 59 min | |
| Aug 20, 10:01 AM CDT | Special Marine Warning | LIX | 44 min | |
| Aug 20, 10:26 AM CDT | Special Marine Warning | LIX | 49 min | |
| Aug 20, 10:48 AM CDT | Special Marine Warning | LIX | 27 min | |
| Aug 20, 11:15 AM CDT | Special Marine Warning | LIX | 45 min | |
| Aug 20, 11:57 AM CDT | Special Weather Statement | LIX | Orleans | 33 min |
| Aug 20, 12:30 PM CDT | Special Weather Statement | LIX | Orleans | 30 min |
| Aug 20, 1:08 PM CDT | Special Weather Statement | LIX | Saint Charles | 37 min |
| Aug 20, 1:09 PM CDT | Special Weather Statement | LIX | Saint Tammany | 36 min |
| Aug 20, 1:18 PM CDT | Special Weather Statement | LIX | Saint Tammany | 27 min |
| Aug 20, 1:41 PM CDT | Special Weather Statement | LIX | Saint Charles | 49 min |
| Aug 20, 1:42 PM CDT | Special Weather Statement | LIX | Saint Tammany | 48 min |
| Aug 20, 1:45 PM CDT | Special Weather Statement | LIX | Washington | 45 min |
| Aug 20, 2:31 PM CDT | Special Weather Statement | LIX | Washington | 44 min |
| Aug 20, 2:40 PM CDT | Areal Flood Advisory | LIX | Saint Tammany | 2 hr |
| Aug 20, 2:52 PM CDT | Special Marine Warning | LIX | 53 min | |
| Aug 20, 2:57 PM CDT | Special Marine Warning | LIX | 48 min | |
| Aug 20, 3:48 PM CDT | Special Marine Warning | LIX | 42 min | |
| Aug 20, 4:31 PM CDT | Special Marine Warning | LIX | 44 min | |
| Aug 20, 4:33 PM CDT | Special Marine Warning | LIX | 57 min | |
| Aug 20, 5:29 PM CDT | Special Marine Warning | LIX | 46 min | |
| Aug 20, 6:46 PM CDT | Special Weather Statement | LIX | West Feliciana | 44 min |
| Aug 20, 6:51 PM CDT | Special Weather Statement | LIX | East Baton Rouge | 39 min |
| Aug 20, 1:44 PM CDT | Special Weather Statement | LIX | Walthall | 46 min |
| Aug 20, 2:30 PM CDT | Special Weather Statement | LIX | Hancock | 45 min |
| Aug 20, 5:33 PM CDT | Special Weather Statement | LIX | Franklin | 42 min |
| Aug 20, 6:22 PM CDT | Special Weather Statement | LIX | Wilkinson | 38 min |
| Aug 20, 6:31 PM CDT | Severe Thunderstorm Warning | LIX | Wilkinson | 24 min |
Nearby
Special Weather Statements in Louisiana, 2020Every special weather statement in 2020
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.