Alert archive / Louisiana / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 91, NWS Shreveport, LA

March 26, 2023Union Parish, Louisiana; Union County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 26, 2023, 5:38 PM CDT for Union Parish, Louisiana; Union County, Arkansas. It was in force for 37 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, 5:38 PM CDT (22:38 UTC)
Expired: Mar 26, 2023, 6:15 PM CDT
In force: 37 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 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 22:39 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

Jackson, MS (KJAN), launched 12:00Z, 10.6 hours before the alert went out and 238 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1834 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

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, 2 hours 29 minutes earlier.

Area forecast discussion, Mar 26, 3:09 PM CDT, 2 hours 29 minutes before

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Hazardous weather outlook, Mar 26, 3:59 PM CDT, 1 hour 39 minutes before

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In the hours before

Special weather statement, Mar 26, 4:38 PM CDT, 1 hour before

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Special weather statement, Mar 26, 4:45 PM CDT, 53 minutes before

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Local storm report, Mar 26, 5:03 PM CDT, 35 minutes before

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Local storm report, Mar 26, 5:05 PM CDT, 33 minutes before

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Special weather statement, Mar 26, 5:17 PM CDT, 21 minutes before

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Special weather statement, Mar 26, 5:27 PM CDT, 11 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 26, 1:00 PM CDT	Special Weather Statement	SHV	Angelina, San Augustine	45 min
Mar 26, 1:05 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, San Augustine	55 min
Mar 26, 1:34 PM CDT	Special Weather Statement	SHV	San Augustine	41 min
Mar 26, 2:07 PM CDT	Severe Thunderstorm Warning	SHV	Sabine, San Augustine	68 min
Mar 26, 3:25 PM CDT	Special Weather Statement	SHV	San Augustine	50 min
Mar 26, 4:36 PM CDT	Special Weather Statement	SHV	San Augustine	39 min
Mar 26, 1:21 PM CDT	Special Weather Statement	SHV	De Soto	39 min
Mar 26, 1:50 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Bossier, Caddo, De Soto, Red River, Webster	40 min
Mar 26, 2:10 PM CDT	Special Weather Statement	SHV	Sabine	50 min
Mar 26, 2:20 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Jackson, Lincoln	39 min
Mar 26, 2:31 PM CDT	Special Weather Statement	SHV	Red River, Winn	44 min
Mar 26, 2:43 PM CDT	Special Weather Statement	SHV	Natchitoches, Winn	47 min
Mar 26, 2:53 PM CDT	Severe Thunderstorm Warning	SHV	Natchitoches, Sabine	67 min
Mar 26, 3:01 PM CDT	Special Weather Statement	SHV	Lincoln	44 min
Mar 26, 3:11 PM CDT	Special Weather Statement	SHV	Caldwell, Ouachita	34 min
Mar 26, 3:23 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Grant, LaSalle, Winn	67 min
Mar 26, 3:36 PM CDT	Severe Thunderstorm Warning	SHV	Grant, LaSalle, Natchitoches, Winn	54 min
Mar 26, 4:08 PM CDT	Special Weather Statement	SHV	Natchitoches, Sabine	67 min
Mar 26, 4:10 PM CDT	Special Weather Statement	SHV	Sabine	50 min
Mar 26, 4:16 PM CDT	Special Weather Statement	SHV	De Soto, Red River	59 min
Mar 26, 4:21 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Grant, LaSalle, Winn	30 min
Mar 26, 4:26 PM CDT	Severe Thunderstorm Warning	SHV	Natchitoches, Sabine	49 min
Mar 26, 4:38 PM CDT	Special Weather Statement	SHV	LaSalle	37 min
Mar 26, 4:45 PM CDT	Special Weather Statement	SHV	Lincoln	45 min
Mar 26, 5:13 PM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	62 min
Mar 26, 5:17 PM CDT	Special Weather Statement	SHV	Sabine	43 min
Mar 26, 5:27 PM CDT	Special Weather Statement	SHV	Union	48 min
Mar 26, 6:06 PM CDT	Special Weather Statement	SHV	Ouachita	39 min
Mar 26, 6:08 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, Grant, LaSalle, Winn	52 min
Mar 26, 6:10 PM CDT	Severe Thunderstorm Warning	SHV	Ouachita	35 min
Mar 26, 6:39 PM CDT	Special Weather Statement	SHV	Ouachita, Winn	51 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.