Alert archive / Texas / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 211, NWS Shreveport, LA

May 1, 2025San Augustine County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at May 1, 2025, 5:02 PM CDT for San Augustine County, Texas. It was in force for 58 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: May 1, 2025, 5:02 PM CDT (22:02 UTC)
Expired: May 1, 2025, 6:00 PM CDT
In force: 58 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County San Augustine County, TX

The radar

The Ft Polk radar (KPOE), 116 km from the middle of the area, began a volume at 22:05 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

Fort Worth, TX (KFWD), launched 12:00Z, 10.0 hours before the alert went out and 335 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: 385 J/kg
Mixed-layer CIN: -217 J/kg
Mixed-layer LCL: 995 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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 May 1, 2:33 PM CDT, 2 hours 29 minutes earlier.

Area forecast discussion, May 1, 2:33 PM CDT, 2 hours 29 minutes before

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In the hours before

Local storm report, May 1, 11:48 AM CDT, 5 hours 14 minutes before

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Local storm report, May 1, 11:50 AM CDT, 5 hours 12 minutes before

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Local storm report, May 1, 11:51 AM CDT, 5 hours 11 minutes before

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Local storm report, May 1, 11:53 AM CDT, 5 hours 9 minutes before

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Special weather statement, May 1, 3:48 PM CDT, 1 hour 14 minutes before

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Special weather statement, May 1, 4:30 PM CDT, 32 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 30, 8:16 PM CDT	Special Weather Statement	SHV	Cherokee	44 min
Apr 30, 8:20 PM CDT	River Flood Warning	SHV	Gregg, Harrison, Marion, Upshur	38 hr
Apr 30, 8:23 PM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston	19 days
Apr 30, 9:38 PM CDT	Special Weather Statement	SHV	Rusk	37 min
Apr 30, 10:23 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches	36 min
Apr 30, 10:55 PM CDT	Areal Flood Warning	SHV	Gregg, Harrison, Marion, Smith, Upshur, Wood	6 hr
Apr 30, 11:11 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Cherokee, Nacogdoches	34 min
May 1, 1:30 AM CDT	Areal Flood Warning	SHV	Cass, Cherokee, Gregg, Harrison, Marion, Panola and 2 more	4 hr
May 1, 9:53 AM CDT	River Flood Warning	SHV	Anderson, Cherokee, Houston, Trinity	19 days
May 1, 9:59 AM CDT	River Flood Warning	SHV	Cherokee, Nacogdoches, Rusk, Smith	72 hr
May 1, 10:26 AM CDT	River Flood Warning	SHV	Cass, Marion	23 hr
May 1, 3:48 PM CDT	Special Weather Statement	SHV	San Augustine	42 min
May 1, 4:30 PM CDT	Special Weather Statement	SHV	Shelby	45 min
May 1, 6:00 PM CDT	Severe Thunderstorm Warning	SHV	San Augustine	60 min
May 1, 6:34 PM CDT	Areal Flood Advisory	SHV	San Augustine	3 hr
May 1, 6:57 PM CDT	Severe Thunderstorm Warning	SHV	San Augustine	63 min
Apr 30, 7:04 PM CDT	Special Weather Statement	SHV	Bossier, Caddo, De Soto, Red River, Webster	41 min
Apr 30, 7:32 PM CDT	Flash Flood Warning	SHV	Bossier, Caddo	6 hr
Apr 30, 10:47 PM CDT	Flash Flood Warning Considerable damage threat	SHV	Bienville, Bossier, Claiborne, Webster	4 hr
May 1, 1:08 AM CDT	Special Weather Statement	SHV	Grant, Natchitoches, Winn	52 min
May 1, 1:16 AM CDT	Areal Flood Warning	SHV	Bossier, Caddo	4 hr
May 1, 1:21 AM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	39 min
May 1, 1:58 AM CDT	Special Weather Statement	SHV	Caldwell, Grant, LaSalle	47 min
May 1, 8:34 AM CDT	Special Weather Statement	SHV	Bossier	26 min
May 1, 11:13 AM CDT	River Flood Warning	SHV	Webster	15 days
May 1, 11:15 AM CDT	River Flood Warning	SHV	Bossier, Webster	6 days
May 1, 5:35 PM CDT	Special Weather Statement	SHV	De Soto	55 min
May 1, 6:14 PM CDT	Special Weather Statement	SHV	De Soto	46 min
May 1, 6:44 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo, De Soto	61 min

Nearby

Severe Thunderstorm Warnings in Texas, 2025 Every severe thunderstorm warning in 2025

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.