Alert archive / Louisiana / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 87, NWS Shreveport, LA

March 26, 20234 parishes in Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 26, 2023, 3:36 PM CDT for 4 parishes in Louisiana. It was in force for 54 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
Mar 26, 2023, 3:36 PM CDT (20:36 UTC)
Expired
Mar 26, 2023, 4:30 PM CDT
In force
54 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Grant Parish, LA, LaSalle Parish, LA, Natchitoches Parish, LA, Winn Parish, LA

The radar

The Ft Polk radar (KPOE), 73 km from the middle of the area, began a volume at 20:38 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
Mar 26, 12:44 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.6 hours before the alert went out and 188 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, Lake Charles Mun, LA at 12:00Z on 2023-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 766 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, Lake Charles Mun, LA at 12:00Z on 2023-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 square meters per square second.1939587897Sfc1 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
766 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
584 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
152 m²/s²
0-3 km storm-relative helicity
245 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.6

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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 26, 3:09 PM CDT, 27 minutes earlier.

Area forecast discussion, Mar 26, 3:09 PM CDT, 27 minutes before
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Hazardous weather outlook, Mar 26, 5:30 AM CDT, 10 hours 6 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
530 AM CDT Sun Mar 26 2023

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-271030-
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant-
Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-Morris-Cass-
Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-Panola-
Nacogdoches-Shelby-Angelina-San Augustine-
530 AM CDT Sun Mar 26 2023

This Hazardous Weather Outlook is for south central Arkansas,
southwest Arkansas, north central Louisiana, northwest Louisiana,
southeast Oklahoma, east Texas and northeast Texas.

.DAY ONE...Today and tonight.

Showers and thunderstorms will develop this afternoon across
portions of deep east Texas and north central Louisiana. Isolated
strong to severe thunderstorms can not be ruled out during the
afternoon and early evening hours across these areas, with damaging
winds and large hail the main threats. These showers and
thunderstorms will diminish through the late evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Showers and thunderstorms look to return to the ArkLaTex overnight
Monday into Tuesday, and again late in the week. At this time, no
specific hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Mar 26, 2:31 PM CDT, 1 hour 5 minutes before
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Special weather statement, Mar 26, 2:43 PM CDT, 53 minutes before
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Local storm report, Mar 26, 2:49 PM CDT, 47 minutes before
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Special weather statement, Mar 26, 3:01 PM CDT, 35 minutes before
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Special weather statement, Mar 26, 3:11 PM CDT, 25 minutes before
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Special weather statement, Mar 26, 3:25 PM CDT, 11 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 26, 1:00 PM CDTSpecial Weather StatementSHVAngelina, San Augustine45 min
Mar 26, 1:05 PM CDTSevere Thunderstorm WarningSHVAngelina, Nacogdoches, San Augustine55 min
Mar 26, 1:34 PM CDTSpecial Weather StatementSHVSan Augustine41 min
Mar 26, 2:07 PM CDTSevere Thunderstorm WarningSHVSabine, San Augustine68 min
Mar 26, 3:25 PM CDTSpecial Weather StatementSHVSan Augustine50 min
Mar 26, 4:36 PM CDTSpecial Weather StatementSHVSan Augustine39 min
Mar 26, 1:21 PM CDTSpecial Weather StatementSHVDe Soto39 min
Mar 26, 1:50 PM CDTSevere Thunderstorm WarningSHVBienville, Bossier, Caddo, De Soto, Red River, Webster40 min
Mar 26, 2:10 PM CDTSpecial Weather StatementSHVSabine50 min
Mar 26, 2:20 PM CDTSevere Thunderstorm WarningSHVBienville, Jackson, Lincoln39 min
Mar 26, 2:31 PM CDTSpecial Weather StatementSHVRed River, Winn44 min
Mar 26, 2:43 PM CDTSpecial Weather StatementSHVNatchitoches, Winn47 min
Mar 26, 2:53 PM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine67 min
Mar 26, 3:01 PM CDTSpecial Weather StatementSHVLincoln44 min
Mar 26, 3:11 PM CDTSpecial Weather StatementSHVCaldwell, Ouachita34 min
Mar 26, 3:23 PM CDTSevere Thunderstorm WarningSHVCaldwell, Grant, LaSalle, Winn67 min
Mar 26, 4:08 PM CDTSpecial Weather StatementSHVNatchitoches, Sabine67 min
Mar 26, 4:10 PM CDTSpecial Weather StatementSHVSabine50 min
Mar 26, 4:16 PM CDTSpecial Weather StatementSHVDe Soto, Red River59 min
Mar 26, 4:21 PM CDTSevere Thunderstorm WarningSHVCaldwell, Grant, LaSalle, Winn30 min
Mar 26, 4:26 PM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine49 min
Mar 26, 4:38 PM CDTSpecial Weather StatementSHVLaSalle37 min
Mar 26, 4:45 PM CDTSpecial Weather StatementSHVLincoln45 min
Mar 26, 5:13 PM CDTSevere Thunderstorm WarningSHVGrant, Natchitoches, Winn62 min
Mar 26, 5:17 PM CDTSpecial Weather StatementSHVSabine43 min
Mar 26, 5:27 PM CDTSpecial Weather StatementSHVUnion48 min
Mar 26, 5:38 PM CDTSevere Thunderstorm WarningSHVUnion37 min
Mar 26, 6:06 PM CDTSpecial Weather StatementSHVOuachita39 min
Mar 26, 6:08 PM CDTSevere Thunderstorm WarningSHVCaldwell, Grant, LaSalle, Winn52 min
Mar 26, 6:10 PM CDTSevere Thunderstorm WarningSHVOuachita35 min
Mar 26, 6:39 PM CDTSpecial Weather StatementSHVOuachita, Winn51 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.