Alert archive / Louisiana / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 18, NWS Shreveport, LA

January 7, 2023Sabine County, Shelby County, Texas; De Soto Parish, Natchitoches Parish, Sabine Parish, Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Jan 7, 2023, 11:15 PM CST for Sabine County, Shelby County, Texas; De Soto Parish, Natchitoches Parish, Sabine Parish, Louisiana. It was in force for 45 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: Jan 7, 2023, 11:15 PM CST (05:15 UTC)
Expired: Jan 8, 2023, 12:00 AM CST
In force: 45 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties De Soto Parish, LA, Natchitoches Parish, LA, Sabine Parish, LA, Sabine County, TX, Shelby County, TX

The radar

The Shreveport radar (KSHV), 85 km from the middle of the area, began a volume at 05:14 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, 5.3 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.

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: 549 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 724 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Jan 7, 10:41 PM CST, 34 minutes earlier.

Area forecast discussion, Jan 7, 10:41 PM CST, 34 minutes before

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Hazardous weather outlook, Jan 7, 5:20 AM CST, 17 hours 55 minutes before

Hazardous Weather Outlook
National Weather Service Shreveport LA
520 AM CST Sat Jan 7 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>167-081130-
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-
520 AM CST Sat Jan 7 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.

Scattered showers and a few thunderstorms will develop across
portions of the area today, becoming more widespread by this
afternoon and into the overnight and early Sunday morning. The best
chances will be for areas southeast of I-30. Severe thunderstorms are
not anticipated at this time, although, we could see between one and
two inches of rainfall.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No severe weather is anticipated at this time through Friday,
however, we are watching for the potential for some stronger
thunderstorms towards the middle of next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jan 7, 8:02 PM CST, 3 hours 13 minutes before

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Special weather statement, Jan 7, 8:59 PM CST, 2 hours 16 minutes before

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Local storm report, Jan 7, 9:21 PM CST, 1 hour 54 minutes before

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Special weather statement, Jan 7, 9:38 PM CST, 1 hour 37 minutes before

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Special weather statement, Jan 7, 10:12 PM CST, 1 hour 3 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
Jan 7, 8:02 PM CST	Special Weather Statement	SHV	Panola	58 min
Jan 7, 8:12 PM CST	Severe Thunderstorm Warning	SHV	Panola, Rusk	48 min
Jan 8, 2:32 AM CST	Special Weather Statement	SHV	Shelby	43 min
Jan 7, 8:59 PM CST	Special Weather Statement	SHV	Ouachita	61 min
Jan 7, 9:38 PM CST	Special Weather Statement	SHV	De Soto, Red River	37 min
Jan 7, 10:00 PM CST	Severe Thunderstorm Warning	SHV	Bienville, De Soto, Natchitoches, Red River	45 min
Jan 7, 10:12 PM CST	Special Weather Statement	SHV	Sabine	63 min
Jan 7, 10:54 PM CST	Severe Thunderstorm Warning	SHV	Natchitoches, Winn	66 min
Jan 7, 11:57 PM CST	Severe Thunderstorm Warning	SHV	De Soto, Natchitoches, Red River, Sabine	48 min
Jan 8, 12:50 AM CST	Special Weather Statement	SHV	Ouachita	10 min
Jan 8, 1:51 AM CST	Special Weather Statement	SHV	LaSalle	39 min
Jan 8, 2:19 AM CST	Flash Flood Warning	SHV	Winn	3 hr

Nearby

Severe Thunderstorm Warnings in Louisiana, 2023 Severe Thunderstorm Warnings in Texas, 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.