Alert archive / Louisiana / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 28, NWS Lake Charles, LA
NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 12, 2020, 1:05 PM CDT for 5 parishes in Louisiana. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 12, 2020, 1:05 PM CDT (18:05 UTC)
- Expired
- Apr 12, 2020, 1:45 PM CDT
- In force
- 40 min
- Issued by
- NWS Lake Charles, LA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Acadia Parish, LA, Lafayette Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Vermilion Parish, LA
The radar
The Lake Charles radar (KLCH), 110 km from the middle of the area, began a volume at 18:05 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
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.1 hours before the alert went out and 229 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
- 1968 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 480 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 302 m²/s²
- 0-3 km storm-relative helicity
- 580 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 9.4
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 11, 4:44 PM CDT, 20 hours 21 minutes earlier.
Area forecast discussion, Apr 11, 4:44 PM CDT, 20 hours 21 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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</html>The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 1:11 AM CDT | Coastal Flood Advisory | LCH | 18 hr | |
| Apr 12, 11:02 AM CDT | River Flood Warning | LCH | Calcasieu | 18 hr |
| Apr 12, 11:02 AM CDT | River Flood Warning | LCH | Calcasieu | 25 hr |
| Apr 12, 12:54 PM CDT | Special Weather Statement | LCH | Lafayette | 51 min |
| Apr 12, 1:45 PM CDT | Special Weather Statement | LCH | Lafayette | 45 min |
| Apr 12, 2:25 PM CDT | Special Weather Statement | LCH | Saint Martin | 35 min |
| Apr 12, 4:56 PM CDT | Special Weather Statement | LCH | Vernon | 49 min |
| Apr 12, 5:37 PM CDT | Severe Thunderstorm Warning | LCH | Allen, Beauregard, Rapides, Vernon | 23 min |
| Apr 12, 2:11 PM CDT | Special Weather Statement | LCH | Jasper | 34 min |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2020Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.