Alert archive / Louisiana / Wind Advisories in 2020
Wind Advisory 15, NWS New Orleans, LA
NWS New Orleans, LA issued this wind advisory at Dec 13, 2020, 3:22 PM CST for Saint Bernard Parish, Saint John the Baptist Parish, Louisiana. It took effect at Dec 13, 2020, 11:00 PM CST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Dec 13, 2020, 3:22 PM CST (21:22 UTC)
- In effect from
- Dec 13, 2020, 11:00 PM CST
- Expired
- Dec 14, 2020, 7:00 AM CST
- In force
- 8 hr
- Issued by
- NWS New Orleans, LA
Counties Saint Bernard Parish, LA, Saint John the Baptist Parish, LA
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.4 hours before the alert went out and 294 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
- 879 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 302 m²/s²
- 0-3 km storm-relative helicity
- 387 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this wind advisory 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 wind advisory went out at Dec 13, 11:56 AM CST, 3 hours 26 minutes earlier.
Area forecast discussion, Dec 13, 11:56 AM CST, 3 hours 26 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 12, 9:17 PM CST | Dense Fog Advisory | LIX | Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Helena and 6 more | 11 hr |
| Dec 13, 3:49 AM CST | Small Craft Advisory | LIX | 35 hr |
Nearby
Wind Advisories in Louisiana, 2020Every wind advisory 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.