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 Aug 19, 2021, 5:06 PM CDT for Saint Helena Parish, Louisiana. It was in force for 39 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, 2021, 5:06 PM CDT (22:06 UTC)
- Expired
- Aug 19, 2021, 5:45 PM CDT
- In force
- 39 min
- Issued by
- NWS New Orleans, LA
- Hail
- 0.00 in
- Wind
- 40
County Saint Helena Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 10.1 hours before the alert went out and 114 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
- 2791 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 655 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- -14 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, 3:43 PM CDT, 1 hour 23 minutes earlier.
Area forecast discussion, Aug 19, 3:43 PM CDT, 1 hour 23 minutes before
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</html>In the hours before
Special weather statement, Aug 19, 4:38 PM CDT, 28 minutes before
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</html>Special weather statement, Aug 19, 5:06 PM CDT, 0 minutes before
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<div class="status" id="status">Temporary Notice</div>
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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, 2:58 AM CDT | Heat Advisory | LIX | Assumption, East Baton Rouge, Iberville, Orleans, Saint Bernard, Saint Helena and 6 more | 16 hr |
| Aug 19, 1:26 PM CDT | Excessive Heat Watch | LIX | Orleans, Saint Bernard, Saint James, Saint John the Baptist, Saint Tammany | 24 hr |
| Aug 19, 1:26 PM CDT | Heat Advisory | LIX | Assumption, East Baton Rouge, East Feliciana, Iberville, Orleans, Pointe Coupee and 9 more | 30 hr |
| Aug 19, 4:38 PM CDT | Special Weather Statement | LIX | West Baton Rouge | 52 min |
| Aug 19, 6:45 PM CDT | Special Weather Statement | LIX | Amite | 45 min |
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.