Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 101, NWS Fort Worth, TX

March 31, 2023Lamar County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 31, 2023, 2:00 PM CDT for Lamar County, Texas. It was in force for 30 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 31, 2023, 2:00 PM CDT (19:00 UTC)
Expired: Mar 31, 2023, 2:30 PM CDT
In force: 30 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Lamar County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 202 km from the middle of the area, began a volume at 19:02 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 31, 1:36 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 7.0 hours before the alert went out and 215 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: 351 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 280 m²/s²
0-3 km storm-relative helicity: 459 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 31, 1:45 PM CDT, 15 minutes earlier.

Area forecast discussion, Mar 31, 1:45 PM CDT, 15 minutes before

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Hazardous weather outlook, Mar 31, 1:49 PM CDT, 11 minutes before

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In the hours before

Special weather statement, Mar 31, 1:18 PM CDT, 42 minutes before

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Special weather statement, Mar 31, 1:21 PM CDT, 39 minutes before

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Special weather statement, Mar 31, 1:41 PM CDT, 19 minutes before

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Special weather statement, Mar 31, 1:51 PM CDT, 9 minutes before

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The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 31, 1:18 PM CDT	Special Weather Statement	FWD	Rockwall	27 min
Mar 31, 1:21 PM CDT	Special Weather Statement	FWD	Ellis	24 min
Mar 31, 1:41 PM CDT	Special Weather Statement	FWD	Hunt	34 min
Mar 31, 1:51 PM CDT	Special Weather Statement	FWD	Navarro	24 min
Mar 31, 1:55 PM CDT	Severe Thunderstorm Warning	FWD	Ellis, Henderson, Kaufman, Navarro	37 min
Mar 31, 3:17 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone, Henderson, Navarro	28 min
Mar 31, 3:30 PM CDT	Severe Thunderstorm Warning	FWD	Freestone, Limestone, Navarro	30 min
Mar 31, 3:44 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Henderson	46 min
Mar 31, 4:00 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone, Limestone	45 min
Mar 31, 4:45 PM CDT	Severe Thunderstorm Warning	FWD	Anderson, Freestone	39 min
Mar 31, 5:20 PM CDT	Special Weather Statement	FWD	Leon	25 min
Mar 31, 5:38 PM CDT	Special Weather Statement	FWD	Robertson	37 min
Mar 31, 6:08 PM CDT	Special Weather Statement	FWD	Robertson	37 min
Mar 31, 6:34 PM CDT	Special Weather Statement	FWD	Madison	26 min

Nearby

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.