Alert archive / Louisiana / Special Weather Statements in 2020
Special Weather Statement, NWS New Orleans, LA
NWS New Orleans, LA issued this special weather statement at Jun 21, 2020, 2:21 PM CDT for Tangipahoa Parish, Louisiana. It was in force for 24 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
- Jun 21, 2020, 2:21 PM CDT (19:21 UTC)
- Expired
- Jun 21, 2020, 2:45 PM CDT
- In force
- 24 min
- Issued by
- NWS New Orleans, LA
County Tangipahoa Parish, LA
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 7.4 hours before the alert went out and 186 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
- 302 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 1304 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
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 Jun 21, 1:24 PM CDT, 57 minutes earlier.
Area forecast discussion, Jun 21, 1:24 PM CDT, 57 minutes before
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</html>In the hours before
Special weather statement, Jun 21, 12:41 PM CDT, 1 hour 40 minutes before
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</html>Special weather statement, Jun 21, 2:21 PM 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 |
|---|---|---|---|---|
| Jun 21, 12:41 PM CDT | Special Weather Statement | LIX | Ascension, Saint James, Saint John the Baptist | 34 min |
| Jun 21, 12:52 PM CDT | Special Marine Warning | LIX | 23 min | |
| Jun 21, 2:49 PM CDT | Special Weather Statement | LIX | Pointe Coupee | 26 min |
| Jun 21, 3:17 PM CDT | Special Weather Statement | LIX | East Baton Rouge | 28 min |
| Jun 21, 4:12 PM CDT | Special Weather Statement | LIX | Ascension | 48 min |
| Jun 21, 4:45 PM CDT | Areal Flood Advisory | LIX | Ascension, Assumption, East Baton Rouge, Iberville, Saint James, West Baton Rouge | 105 min |
Nearby
Special Weather Statements in Louisiana, 2020Every special weather statement 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.