Alert archive / Louisiana / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 79, NWS Shreveport, LA

March 24, 2023Union Parish, Louisiana; Union County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 24, 2023, 5:01 PM CDT for Union Parish, Louisiana; Union County, Arkansas. It was in force for 29 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 24, 2023, 5:01 PM CDT (22:01 UTC)
Expired: Mar 24, 2023, 5:30 PM CDT
In force: 29 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Union County, AR, Union Parish, LA

The radar

The Shreveport radar (KSHV), 141 km from the middle of the area, began a volume at 22:06 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

Shreveport, LA (KSHV), launched 12:00Z, 10.0 hours before the alert went out and 132 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 127 J/kg
Mixed-layer CIN: -276 J/kg
Mixed-layer LCL: 728 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 301 m²/s²
0-3 km storm-relative helicity: 403 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 24, 3:37 PM CDT, 1 hour 24 minutes earlier.

Area forecast discussion, Mar 24, 3:37 PM CDT, 1 hour 24 minutes before

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Hazardous weather outlook, Mar 24, 5:10 AM CDT, 11 hours 51 minutes before

Hazardous Weather Outlook
National Weather Service Shreveport LA
510 AM CDT Fri Mar 24 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>167-251015-
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-
510 AM CDT Fri Mar 24 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.

A potentially significant severe weather threat exists across much
of the region today, as showers and thunderstorms develop across
southeast Oklahoma, adjacent southwest Arkansas, and east Texas
during the morning, before shifting east across the remainder of the
region during the afternoon and evening. Isolated tornadoes, some of
which could be strong, damaging winds, and large hail will be
possible, with locally heavy rainfall also accompanying the stronger
storms. The threat for severe weather should end late this evening as
the storms exit the region to the east.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Additional showers and thunderstorms are possible Sunday as a warm
front moves northward into Deep East Texas and central Louisiana.
Isolated thunderstorms will be possible Sunday afternoon and evening
over portions of deep east Texas and portions of north-central
Louisiana.

Additionally,

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today and tonight.

In the hours before

Special weather statement, Mar 24, 2:46 PM CDT, 2 hours 15 minutes before

Special Weather Statement
National Weather Service Shreveport LA
246 PM CDT Fri Mar 24 2023

TXZ149-150-242015-
Cherokee TX-Rusk TX-
246 PM CDT Fri Mar 24 2023

...A strong thunderstorm will impact portions of southwestern Rusk
and northern Cherokee Counties through 315 PM CDT...

At 245 PM CDT, Doppler radar was tracking a strong thunderstorm near
Maydelle, or near Rusk, moving northeast at 60 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Jacksonville, Rusk, New Salem, Ponta, Maydelle, New Summerfield,
Gallatin, Reklaw, Concord and Laneville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Tornado Watch remains in effect until 700 PM CDT for northeastern
Texas.

&&

LAT...LON 3214 9506 3214 9499 3217 9498 3196 9476
      3171 9521 3183 9537
TIME...MOT...LOC 1945Z 222DEG 52KT 3183 9524

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

13

Special weather statement, Mar 24, 2:55 PM CDT, 2 hours 6 minutes before

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Special weather statement, Mar 24, 2:56 PM CDT, 2 hours 5 minutes before

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Special weather statement, Mar 24, 3:25 PM CDT, 1 hour 36 minutes before

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Special weather statement, Mar 24, 3:39 PM CDT, 1 hour 22 minutes before

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Special weather statement, Mar 24, 4:47 PM CDT, 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 24, 12:55 PM CDT	Special Weather Statement	SHV	Wood	35 min
Mar 24, 1:21 PM CDT	Special Weather Statement	SHV	Titus	39 min
Mar 24, 1:34 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Morris, Red River, Titus	41 min
Mar 24, 2:46 PM CDT	Special Weather Statement	SHV	Cherokee	29 min
Mar 24, 2:56 PM CDT	Special Weather Statement	SHV	San Augustine	34 min
Mar 24, 3:39 PM CDT	Special Weather Statement	SHV	Cass	51 min
Mar 24, 2:55 PM CDT	Special Weather Statement	SHV	De Soto	35 min
Mar 24, 3:25 PM CDT	Special Weather Statement	SHV	Bossier	35 min
Mar 24, 4:47 PM CDT	Special Weather Statement	SHV	Caddo	28 min
Mar 24, 5:10 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson, Lincoln, Ouachita, Union	25 min
Mar 24, 5:32 PM CDT	Special Weather Statement	SHV	Union	28 min
Mar 24, 5:41 PM CDT	Special Weather Statement	SHV	Claiborne, Webster	49 min
Mar 24, 2:47 PM CDT	Tornado Warning	SHV	Hempstead, Howard, Little River, Sevier	43 min
Mar 24, 3:28 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Nevada	34 min
Mar 24, 4:19 PM CDT	Tornado Warning	SHV	Hempstead, Nevada	26 min
Mar 24, 6:14 PM CDT	Special Weather Statement	SHV	Union	46 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2023 Severe Thunderstorm Warnings in Arkansas, 2023 Every 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.