Alert archive / Louisiana / Excessive Heat Watches in 2021
Excessive Heat Watch 3, NWS New Orleans, LA
NWS New Orleans, LA issued this excessive heat watch at Aug 20, 2021, 3:01 AM CDT for 5 parishes in Louisiana. It took effect at Aug 22, 2021, 9:00 AM CDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Aug 20, 2021, 3:01 AM CDT (08:01 UTC)
- In effect from
- Aug 22, 2021, 9:00 AM CDT
- Expired
- Aug 21, 2021, 3:30 PM CDT
- In force
- Issued by
- NWS New Orleans, LA
Counties Orleans Parish, LA, Saint Bernard Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA
The nearest sounding before it
Jackson, MS (KJAN), launched 00:00Z, 8.0 hours before the alert went out and 247 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
- 413 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1178 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this excessive heat watch 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 excessive heat watch went out at Aug 19, 11:51 PM CDT, 3 hours 10 minutes earlier.
Area forecast discussion, Aug 19, 11:51 PM CDT, 3 hours 10 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 |
|---|---|---|---|---|
| Aug 20, 1:26 PM CDT | Excessive Heat Warning | LIX | Orleans, Saint Bernard, Saint James, Saint John the Baptist, Saint Tammany | 26 hr |
| Aug 20, 1:26 PM CDT | Heat Advisory | LIX | Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 5 more | 26 hr |
Nearby
Excessive Heat Watches in Louisiana, 2021Excessive Heat Watches in Mississippi, 2021Every excessive heat watch 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.