Alert archive / Louisiana / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 35, NWS Shreveport, LA

March 14, 2019Claiborne Parish, Lincoln Parish, Union Parish, Louisiana; Columbia County, Union County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 14, 2019, 5:14 AM CDT for Claiborne Parish, Lincoln Parish, Union Parish, Louisiana; Columbia County, Union County, Arkansas. It was in force for 61 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 14, 2019, 5:14 AM CDT (10:14 UTC)
Expired: Mar 14, 2019, 6:15 AM CDT
In force: 61 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Columbia County, AR, Union County, AR, Claiborne Parish, LA, Lincoln Parish, LA, Union Parish, LA

The radar

The Shreveport radar (KSHV), 113 km from the middle of the area, began a volume at 10:18 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.

Issued	Product	Office	Lasted
Mar 14, 1:59 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 10.2 hours before the alert went out and 104 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: 3 J/kg
Mixed-layer CIN: -323 J/kg
Mixed-layer LCL: 683 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 285 m²/s²
0-3 km storm-relative helicity: 301 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

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 14, 5:01 AM CDT, 13 minutes earlier.

Area forecast discussion, Mar 14, 5:01 AM CDT, 13 minutes before

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Hazardous weather outlook, Mar 14, 4:52 AM CDT, 22 minutes before

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In the hours before

Local storm report, Mar 14, 4:09 AM CDT, 1 hour 5 minutes before

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Local storm report, Mar 14, 4:10 AM CDT, 1 hour 4 minutes before

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Local storm report, Mar 14, 4:11 AM CDT, 1 hour 3 minutes before

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Local storm report, Mar 14, 4:34 AM CDT, 40 minutes before

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Special weather statement, Mar 14, 5:01 AM CDT, 13 minutes before

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Local storm report, Mar 14, 5:10 AM CDT, 4 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 13, 9:39 PM CDT	River Flood Warning	SHV	Smith, Wood	8 days
Mar 14, 1:32 AM CDT	Special Weather Statement	SHV	Bowie	43 min
Mar 14, 1:42 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus	63 min
Mar 14, 1:56 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Smith, Upshur, Wood	49 min
Mar 14, 2:25 AM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Rusk, Smith	65 min
Mar 14, 2:35 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Gregg, Harrison, Marion, Morris and 2 more	55 min
Mar 14, 2:41 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Cass, Morris	64 min
Mar 14, 3:05 AM CDT	Lake Wind Advisory	SHV	Bowie, Camp, Cass, Cherokee, Franklin, Gregg and 10 more	14 hr
Mar 14, 3:16 AM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Harrison, Nacogdoches, Panola, Rusk	59 min
Mar 14, 3:26 AM CDT	Severe Thunderstorm Warning	SHV	Cass, Harrison, Marion	64 min
Mar 14, 4:11 AM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola, Rusk, Shelby	49 min
Mar 14, 4:15 AM CDT	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches	45 min
Mar 14, 5:01 AM CDT	Special Weather Statement	SHV	Angelina, San Augustine, Shelby	44 min
Mar 14, 5:42 AM CDT	Special Weather Statement	SHV	Sabine, San Augustine	48 min
Mar 14, 9:40 AM CDT	River Flood Warning	SHV	Sabine, San Augustine	12 hr
Mar 14, 9:42 AM CDT	River Flood Warning	SHV	Angelina, Houston, Polk, Trinity, Tyler	46 hr
Mar 14, 4:18 PM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston	7 days
Mar 13, 7:01 PM CDT	Special Weather Statement	SHV	Lincoln, Union	29 min
Mar 13, 7:11 PM CDT	Severe Thunderstorm Warning	SHV	Union	34 min
Mar 14, 3:56 AM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Webster	64 min
Mar 14, 4:26 AM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo, Claiborne, Webster	64 min
Mar 14, 2:19 AM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	41 min
Mar 14, 2:57 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Nevada, Sevier	44 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2019 Severe Thunderstorm Warnings in Arkansas, 2019 Every severe thunderstorm warning in 2019

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.