Alert archive / Louisiana / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 113, NWS Shreveport, LA

April 17, 20225 parishes in Louisiana

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 17, 2022, 4:46 PM CDT for 5 parishes in Louisiana. It was in force for 44 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: Apr 17, 2022, 4:46 PM CDT (21:46 UTC)
Expired: Apr 17, 2022, 5:30 PM CDT
In force: 44 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bienville Parish, LA, Caldwell Parish, LA, Jackson Parish, LA, Ouachita Parish, LA, Winn Parish, LA

The radar

The Ft Polk radar (KPOE), 128 km from the middle of the area, began a volume at 21:49 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
Apr 17, 12:29 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.8 hours before the alert went out and 228 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: 257 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 492 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Apr 17, 3:17 PM CDT, 1 hour 29 minutes earlier.

Area forecast discussion, Apr 17, 3:17 PM CDT, 1 hour 29 minutes before

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Hazardous weather outlook, Apr 17, 1:55 PM CDT, 2 hours 51 minutes before

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In the hours before

Special weather statement, Apr 17, 12:45 PM CDT, 4 hours 1 minute before

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Special weather statement, Apr 17, 1:04 PM CDT, 3 hours 42 minutes before

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Special weather statement, Apr 17, 2:45 PM CDT, 2 hours 1 minute before

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Special weather statement, Apr 17, 3:15 PM CDT, 1 hour 31 minutes before

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Special weather statement, Apr 17, 4:17 PM CDT, 29 minutes before

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Special weather statement, Apr 17, 4:26 PM CDT, 20 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
Apr 17, 11:33 AM CDT	Special Weather Statement	SHV	Red River	27 min
Apr 17, 11:34 AM CDT	Special Weather Statement	SHV	Franklin, Titus	26 min
Apr 17, 12:04 PM CDT	Severe Thunderstorm Warning	SHV	Franklin, Morris, Titus	41 min
Apr 17, 12:45 PM CDT	Special Weather Statement	SHV	Cass, Morris	60 min
Apr 17, 12:50 PM CDT	Severe Thunderstorm Warning	SHV	Cass, Marion, Morris	55 min
Apr 17, 1:04 PM CDT	Special Weather Statement	SHV	Camp	26 min
Apr 17, 1:40 PM CDT	Severe Thunderstorm Warning	SHV	Cass, Marion	65 min
Apr 17, 2:45 PM CDT	Special Weather Statement	SHV	Bossier, Webster	30 min
Apr 17, 3:15 PM CDT	Special Weather Statement	SHV	Claiborne, Webster	45 min
Apr 17, 3:26 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Claiborne, Lincoln, Webster	49 min
Apr 17, 4:17 PM CDT	Special Weather Statement	SHV	Bienville, Jackson	43 min
Apr 17, 4:26 PM CDT	Special Weather Statement	SHV	Lincoln	49 min
Apr 17, 4:32 PM CDT	Severe Thunderstorm Warning	SHV	Jackson, Lincoln, Ouachita, Union	43 min
Apr 17, 5:11 PM CDT	Special Weather Statement	SHV	Ouachita	34 min
Apr 17, 5:25 PM CDT	Severe Thunderstorm Warning	SHV	Caldwell, LaSalle, Ouachita, Winn	50 min
Apr 17, 5:28 PM CDT	Special Weather Statement	SHV	LaSalle	47 min
Apr 17, 6:04 PM CDT	Special Weather Statement	SHV	LaSalle	26 min
Apr 17, 12:25 PM CDT	Special Weather Statement	SHV	Hempstead	35 min
Apr 17, 12:41 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Nevada	64 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2022 Every severe thunderstorm warning in 2022

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.