Alert archive / Louisiana / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 261, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Dec 1, 2023, 1:17 AM CST for 4 parishes in 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 counties it named.
The facts
- Issued
- Dec 1, 2023, 1:17 AM CST (07:17 UTC)
- Expired
- Dec 1, 2023, 1:46 AM CST
- In force
- 29 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
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, 7.3 hours before the alert went out and 183 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
- 653 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 164 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Dec 1, 12:05 AM CST, 1 hour 12 minutes earlier.
Area forecast discussion, Dec 1, 12:05 AM CST, 1 hour 12 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 |
|---|---|---|---|---|
| Dec 1, 4:08 AM CST | Special Weather Statement | LIX | Livingston | 37 min |
| Dec 1, 4:09 AM CST | Special Weather Statement | LIX | Ascension | 36 min |
| Dec 1, 4:18 AM CST | Special Marine Warning | LIX | 57 min | |
| Dec 1, 4:22 AM CST | Special Weather Statement | LIX | Ascension, Saint James | 38 min |
| Dec 1, 4:29 AM CST | Areal Flood Advisory | LIX | Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge | 4 min |
| Dec 1, 4:33 AM CST | Flash Flood Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge | 67 min |
| Dec 1, 7:01 AM CST | Special Marine Warning | LIX | 59 min | |
| Dec 1, 8:04 AM CST | Special Marine Warning | LIX | 56 min | |
| Dec 1, 1:36 PM CST | Flood Watch | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Jefferson, Livingston and 8 more | 16 hr |
| Dec 1, 6:14 AM CST | Special Weather Statement | LIX | Hancock | 46 min |
| Dec 1, 6:59 AM CST | Special Weather Statement | LIX | Harrison | 61 min |
| Dec 1, 8:02 AM CST | Special Weather Statement | LIX | Jackson | 28 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2023Every severe thunderstorm warning in 2023
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.