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 Apr 16, 2021, 4:56 AM CDT for 4 parishes in Louisiana. It was in force for 64 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
- Apr 16, 2021, 4:56 AM CDT (09:56 UTC)
- Expired
- Apr 16, 2021, 6:00 AM CDT
- In force
- 64 min
- Issued by
- NWS New Orleans, LA
Counties East Baton Rouge Parish, LA, Iberville Parish, LA, Pointe Coupee Parish, LA, West Baton Rouge Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 9.9 hours before the alert went out and 163 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 952 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Apr 16, 4:03 AM CDT, 53 minutes earlier.
Area forecast discussion, Apr 16, 4:03 AM CDT, 53 minutes before
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</html>In the hours before
Special weather statement, Apr 16, 4:21 AM CDT, 35 minutes before
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</html>Special weather statement, Apr 16, 4:56 AM CDT, 0 minutes before
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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 |
|---|---|---|---|---|
| Apr 15, 9:06 PM CDT | River Flood Advisory | LIX | Tangipahoa | 39 hr |
| Apr 16, 4:21 AM CDT | Special Weather Statement | LIX | Iberville, Pointe Coupee, West Baton Rouge | 39 min |
| Apr 16, 5:23 AM CDT | Special Weather Statement | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Saint James, West Baton Rouge | 37 min |
| Apr 16, 5:45 AM CDT | Special Weather Statement | LIX | Ascension, Livingston, Saint James, Saint John the Baptist | 30 min |
| Apr 16, 5:49 AM CDT | Special Marine Warning | LIX | 56 min | |
| Apr 16, 6:12 AM CDT | Special Weather Statement | LIX | Ascension, Assumption, Saint James | 48 min |
| Apr 16, 6:16 AM CDT | Special Weather Statement | LIX | Orleans, Saint John the Baptist, Saint Tammany | 44 min |
| Apr 16, 6:39 AM CDT | Special Marine Warning | LIX | 51 min | |
| Apr 16, 6:59 AM CDT | Special Weather Statement | LIX | Orleans | 46 min |
| Apr 16, 7:19 AM CDT | Special Marine Warning | LIX | 56 min | |
| Apr 16, 7:51 AM CDT | Special Weather Statement | LIX | Jefferson | 24 min |
| Apr 16, 9:23 AM CDT | Special Weather Statement | LIX | Plaquemines | 37 min |
| Apr 16, 9:34 AM CDT | Tornado Warning | LIX | Plaquemines | 11 min |
| Apr 16, 9:50 AM CDT | Special Weather Statement | LIX | Terrebonne | 55 min |
| Apr 16, 9:51 AM CDT | Special Marine Warning | LIX | 54 min | |
| Apr 16, 9:54 AM CDT | Special Marine Warning | LIX | 66 min | |
| Apr 16, 10:28 AM CDT | Special Marine Warning | LIX | 62 min | |
| Apr 16, 10:39 AM CDT | Special Marine Warning | LIX | 66 min | |
| Apr 16, 11:24 AM CDT | Special Marine Warning | LIX | 66 min | |
| Apr 16, 11:33 AM CDT | Special Marine Warning | LIX | 57 min | |
| Apr 16, 12:02 PM CDT | Special Marine Warning | LIX | 58 min | |
| Apr 16, 12:25 PM CDT | Special Marine Warning | LIX | 65 min | |
| Apr 16, 12:47 PM CDT | Special Marine Warning | LIX | 28 min | |
| Apr 16, 1:12 PM CDT | Special Marine Warning | LIX | 33 min | |
| Apr 16, 1:25 PM CDT | Special Marine Warning | LIX | 50 min | |
| Apr 15, 8:18 PM CDT | River Flood Warning | LIX | Hancock | 11 hr |
| Apr 15, 9:06 PM CDT | River Flood Advisory | LIX | Pike | 13 hr |
| Apr 16, 9:27 AM CDT | River Flood Warning | LIX | Hancock | 25 hr |
| Apr 16, 10:12 AM CDT | River Flood Warning | LIX | Pike | 39 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.