Alert archive / Louisiana / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 85, NWS Lake Charles, LA

April 27, 2023Saint Landry Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 27, 2023, 3:39 AM CDT for Saint Landry Parish, Louisiana. It was in force for 36 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 27, 2023, 3:39 AM CDT (08:39 UTC)
Expired
Apr 27, 2023, 4:15 AM CDT
In force
36 min
Issued by
NWS Lake Charles, LA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Saint Landry Parish, LA

The radar

The Ft Polk radar (KPOE), 111 km from the middle of the area, began a volume at 08:41 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 26, 11:40 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.7 hours before the alert went out and 224 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2023-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1037 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2023-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1037 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
906 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

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 27, 12:07 AM CDT, 3 hours 32 minutes earlier.

Area forecast discussion, Apr 27, 12:07 AM CDT, 3 hours 32 minutes before
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Hazardous weather outlook, Apr 26, 3:50 PM CDT, 11 hours 49 minutes before
Hazardous Weather Outlook
National Weather Service Lake Charles LA
350 PM CDT Wed Apr 26 2023

LAZ027>033-044-045-055-073-074-141>143-152>154-241>243-252>254-
TXZ180-201-259>262-515-516-615-616-272100-
Vernon-Rapides-Avoyelles-Beauregard-Allen-Evangeline-St. Landry-
Lafayette-Upper St. Martin-Lower St. Martin-West Cameron-
East Cameron-Northern Calcasieu-Northern Jefferson Davis-
Northern Acadia-Upper Vermilion-Upper Iberia-Upper St. Mary-
Southern Calcasieu-Southern Jefferson Davis-Southern Acadia-
Lower Vermilion-Lower Iberia-Lower St. Mary-Tyler-Hardin-
Northern Jasper-Northern Newton-Southern Jasper-Southern Newton-
Upper Jefferson-Northern Orange-Lower Jefferson-Southern Orange-
350 PM CDT Wed Apr 26 2023

This Hazardous Weather Outlook is for central Louisiana, south
central Louisiana, southwest Louisiana, west central Louisiana and
southeast Texas.

.DAY ONE...This afternoon and tonight.

Showers and storms will increase in coverage late this evening,
spreading east across southeast Texas into Louisiana after midnight.
The area has been highlighted with a Slight Risk (level 2 out of 5)
for severe weather by the Storm Prediction Center. The primary severe
weather risk looks to be damaging winds, although an isolated tornado
or two as well as large hail cannot be ruled out. In addition, areas
northwest of a line from Beaumont to Marksville have also been
highlighted with a Marginal Risk (level 1 out of 4) for excessive
rainfall and flooding by the Weather Prediction Center.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Showers and thunderstorms will be ongoing at daybreak Thursday, as
the convective complex progresses east through the morning. Portions
of southern Louisiana, southeast of a line from Lake Charles to just
north of Opelousas have been highlighted in a Slight Risk (level 2
out of 5) for severe weather by the Storm Prediction Center, with the
primary risk damaging wind gusts. However, an isolated tornado or
large hail will be possible as well. Additionally, areas east and southeast
of a line from Sabine Pass to Leesville to Alexandria have been
highlighted with a Marginal Risk (level 1 out of 4) for excessive
rainfall and flooding by the Weather Prediction Center for Thursday.

After a short break on Friday, another round of showers and storms is
expected on Saturday. At this time, any risk for severe weather or
heavy rainfall appears low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

GMZ430-432-435-436-450-452-455-470-472-475-272100-
Sabine Lake-Calcasieu Lake-Vermilion and West Cote Blanche Bays-
Atchafalaya and East Cote Blanche Bays-
Coastal waters from Cameron LA to High Island TX out 20 NM-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
Coastal waters from Lower Atchafalaya River to Intracoastal City LA
out 20 NM-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM-
Coastal waters from Lower Atchafalaya River to Intracoastal City LA
from 20 to 60 NM-
350 PM CDT Wed Apr 26 2023

This Hazardous Weather Outlook is for the Gulf of Mexico and the
coastal lakes and bays of the Gulf of Mexico.

.DAY ONE...This afternoon and tonight.

Showers and thunderstorms will increase late tonight. Some storms
could be strong, producing locally higher winds and seas, along with
dangerous cloud-to-water lightning and rains reducing visibilities
to less than a mile.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Showers and thunderstorms will continue through Thursday with the
passage of the front. Some storms could be strong, producing locally
higher winds and seas, along with dangerous cloud-to-water lightning
and rains reducing visibilities to less than a mile.

Another round of showers and storms is expected on Saturday as
another front moves through the region. This front will be followed
by strong northwesterly winds and rough seas, with exercise caution
or marginal advisory conditions possible from Saturday into Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Apr 27, 3:04 AM CDT, 35 minutes before
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Special weather statement, Apr 27, 3:07 AM CDT, 32 minutes before
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Special weather statement, Apr 27, 3:10 AM CDT, 29 minutes before
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Special weather statement, Apr 27, 3:12 AM CDT, 27 minutes before
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Special weather statement, Apr 27, 3:33 AM CDT, 6 minutes before
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Special weather statement, Apr 27, 3:36 AM CDT, 3 minutes before
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The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 27, 12:33 AM CDTSevere Thunderstorm WarningLCHBeauregard27 min
Apr 27, 12:46 AM CDTSevere Thunderstorm Warning Considerable damage threatLCHBeauregard, Vernon29 min
Apr 27, 12:57 AM CDTSpecial Weather StatementLCHVernon33 min
Apr 27, 12:58 AM CDTSevere Thunderstorm WarningLCHBeauregard, Calcasieu32 min
Apr 27, 1:00 AM CDTSpecial Weather StatementLCHVernon30 min
Apr 27, 1:14 AM CDTSevere Thunderstorm WarningLCHBeauregard, Vernon31 min
Apr 27, 1:18 AM CDTSpecial Weather StatementLCHVernon27 min
Apr 27, 1:20 AM CDTSpecial Weather StatementLCHCalcasieu25 min
Apr 27, 1:40 AM CDTSpecial Weather StatementLCHVernon35 min
Apr 27, 1:43 AM CDTSpecial Weather StatementLCHAllen32 min
Apr 27, 1:58 AM CDTSpecial Weather StatementLCHVernon32 min
Apr 27, 2:02 AM CDTSpecial Marine WarningLCH26 min
Apr 27, 2:02 AM CDTSpecial Weather StatementLCHJefferson Davis28 min
Apr 27, 2:14 AM CDTSpecial Weather StatementLCHAllen31 min
Apr 27, 2:27 AM CDTSpecial Weather StatementLCHAcadia, Cameron, Jefferson Davis33 min
Apr 27, 2:30 AM CDTSpecial Weather StatementLCHRapides30 min
Apr 27, 2:31 AM CDTSpecial Weather StatementLCHRapides14 min
Apr 27, 2:39 AM CDTSpecial Weather StatementLCHEvangeline36 min
Apr 27, 3:04 AM CDTSpecial Weather StatementLCHAcadia26 min
Apr 27, 3:07 AM CDTSpecial Weather StatementLCHAvoyelles23 min
Apr 27, 3:08 AM CDTSevere Thunderstorm WarningLCHAvoyelles, Evangeline, Rapides37 min
Apr 27, 3:12 AM CDTSpecial Weather StatementLCHSaint Landry33 min
Apr 27, 3:15 AM CDTSevere Thunderstorm WarningLCHEvangeline, Saint Landry30 min
Apr 27, 3:33 AM CDTSpecial Weather StatementLCHAvoyelles27 min
Apr 27, 3:36 AM CDTSpecial Weather StatementLCHLafayette, Saint Martin24 min
Apr 27, 4:04 AM CDTSpecial Weather StatementLCHSaint Martin26 min
Apr 27, 4:21 AM CDTSpecial Weather StatementLCHSaint Martin24 min
Apr 27, 4:44 AM CDTSevere Thunderstorm WarningLCHSaint Martin16 min
Apr 27, 5:34 AM CDTSpecial Marine WarningLCH41 min
Apr 27, 6:18 AM CDTSpecial Marine WarningLCH27 min
Apr 27, 6:44 AM CDTSpecial Marine WarningLCH31 min
Apr 27, 6:47 AM CDTSpecial Marine WarningLCH28 min
Apr 27, 7:06 AM CDTSpecial Marine WarningLCH24 min
Apr 27, 7:28 AM CDTSpecial Weather StatementLCHSt. Mary32 min
Apr 27, 7:34 AM CDTSevere Thunderstorm WarningLCHSaint Martin, St. Mary26 min
Apr 27, 8:11 AM CDTSpecial Marine WarningLCH34 min
Apr 27, 9:11 AM CDTSpecial Marine WarningLCH64 min
Apr 27, 9:20 AM CDTSpecial Marine WarningLCH55 min
Apr 26, 11:18 PM CDTSevere Thunderstorm WarningLCHHardin, Jasper, Tyler42 min
Apr 26, 11:30 PM CDTSevere Thunderstorm Warning Considerable damage threatLCHJasper, Tyler45 min
Apr 26, 11:52 PM CDTSevere Thunderstorm WarningLCHHardin, Jasper, Tyler38 min
Apr 27, 12:02 AM CDTSpecial Weather StatementLCHHardin28 min
Apr 27, 12:19 AM CDTSevere Thunderstorm WarningLCHJasper, Newton, Tyler26 min
Apr 27, 2:47 AM CDTSpecial Weather StatementLCHJefferson28 min
Apr 27, 3:10 AM CDTSpecial Weather StatementLCHOrange20 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2023Every severe thunderstorm warning in 2023

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.