Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 271, NWS Fort Worth, TX

May 19, 2023Fannin County, Grayson County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 19, 2023, 1:46 PM CDT for Fannin County, Grayson County, Texas. It was in force for 21 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 19, 2023, 1:46 PM CDT (18:46 UTC)
Expired
May 19, 2023, 2:07 PM CDT
In force
21 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Fannin County, TX, Grayson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 143 km from the middle of the area, began a volume at 18:47 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.

IssuedProductOfficeLasted
May 19, 1:09 PM CDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 6.8 hours before the alert went out and 120 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-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2023-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 730 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2023-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
730 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1202 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 7:44 PM CDTAreal Flood AdvisoryFWDYoung2 hr
May 19, 1:28 PM CDTSpecial Weather StatementFWDGrayson32 min
May 19, 1:54 PM CDTSpecial Weather StatementFWDCollin36 min
May 19, 2:00 PM CDTSevere Thunderstorm WarningFWDCollin, Denton, Grayson45 min
May 19, 2:24 PM CDTSpecial Weather StatementFWDFannin21 min
May 19, 2:36 PM CDTSevere Thunderstorm WarningFWDFannin24 min
May 19, 2:42 PM CDTSevere Thunderstorm WarningFWDFannin, Grayson33 min
May 19, 2:58 PM CDTSevere Thunderstorm WarningFWDCollin, Denton47 min
May 19, 3:03 PM CDTSevere Thunderstorm WarningFWDFannin27 min
May 19, 3:15 PM CDTSevere Thunderstorm WarningFWDDallas, Tarrant45 min
May 19, 3:29 PM CDTAreal Flood AdvisoryFWDCollin, Denton2 hr
May 19, 3:32 PM CDTSpecial Weather StatementFWDHunt28 min
May 19, 3:36 PM CDTSpecial Weather StatementFWDJohnson24 min
May 19, 4:19 PM CDTSpecial Weather StatementFWDHunt26 min
May 19, 4:26 PM CDTSevere Thunderstorm WarningFWDHunt34 min
May 19, 5:05 PM CDTAreal Flood AdvisoryFWDDallas, Tarrant2 hr
May 19, 5:46 PM CDTSevere Thunderstorm WarningFWDHill29 min
May 19, 5:49 PM CDTSevere Thunderstorm WarningFWDComanche, Hamilton41 min
May 19, 6:24 PM CDTAreal Flood AdvisoryFWDHill2 hr
May 19, 6:32 PM CDTSevere Thunderstorm WarningFWDCollin, Dallas, Denton43 min
May 19, 6:51 PM CDTSevere Thunderstorm Warning Considerable damage threatFWDCollin39 min

Nearby

Severe Thunderstorm Warnings in Texas, 2023Every 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.