Alert archive / Louisiana / Special Weather Statements in 2021
Special Weather Statement, NWS Shreveport, LA
NWS Shreveport, LA issued this special weather statement at Apr 15, 2021, 2:47 AM CDT for LaSalle Parish, Louisiana. It was in force for 43 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
- Apr 15, 2021, 2:47 AM CDT (07:47 UTC)
- Expired
- Apr 15, 2021, 3:30 AM CDT
- In force
- 43 min
- Issued by
- NWS Shreveport, LA
County LaSalle Parish, LA
The radar
The Ft Polk radar (KPOE), 83 km from the middle of the area, began a volume at 07:47 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.8 hours before the alert went out and 181 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
- 651 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 566 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.6
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 Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at Apr 15, 12:58 AM CDT, 1 hour 49 minutes earlier.
Area forecast discussion, Apr 15, 12:58 AM CDT, 1 hour 49 minutes before
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</html>Hazardous weather outlook, Apr 14, 12:18 PM CDT, 14 hours 29 minutes before
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</html>In the hours before
Local storm report, Apr 14, 10:57 PM CDT, 3 hours 50 minutes before
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</html>Local storm report, Apr 14, 11:16 PM CDT, 3 hours 31 minutes before
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</html>Local storm report, Apr 14, 11:23 PM CDT, 3 hours 24 minutes before
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</html>Special weather statement, Apr 15, 2:47 AM CDT, 0 minutes before
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</html>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; radar from the NEXRAD Level II archive.