Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 63, NWS Fort Worth, TX

April 22, 2020Fannin County, Lamar County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 22, 2020, 7:40 PM CDT for Fannin County, Lamar County, Texas. It was in force for 65 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 22, 2020, 7:40 PM CDT (00:40 UTC)
Expired: Apr 22, 2020, 8:45 PM CDT
In force: 65 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Tornado: Possible
Hail: 1.5 in
Wind: 70.0 mph

Counties Fannin County, TX, Lamar County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 180 km from the middle of the area, began a volume at 00:43 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 22, 2:33 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.7 hours before the alert went out and 162 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3396 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: -74 m²/s²
0-3 km storm-relative helicity: -15 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 Apr 22, 6:53 PM CDT, 47 minutes earlier.

Area forecast discussion, Apr 22, 6:53 PM CDT, 47 minutes before

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Hazardous weather outlook, Apr 22, 6:11 PM CDT, 1 hour 29 minutes before

Hazardous Weather Outlook
National Weather Service Fort Worth TX
611 PM CDT Wed Apr 22 2020

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-231130-
Montague-Cooke-Grayson-Fannin-Lamar-Young-Jack-Wise-Denton-Collin-
Hunt-Delta-Hopkins-Stephens-Palo Pinto-Parker-Tarrant-Dallas-
Rockwall-Kaufman-Van Zandt-Rains-Eastland-Erath-Hood-Somervell-
Johnson-Ellis-Henderson-Comanche-Mills-Hamilton-Bosque-Hill-Navarro-
Freestone-Anderson-Lampasas-Coryell-Bell-McLennan-Falls-Limestone-
Leon-Milam-Robertson-
611 PM CDT Wed Apr 22 2020

This Hazardous Weather Outlook is for North and Central Texas.

.DAY ONE...Tonight.
Severe thunderstorms are possible east of I-35 through the evening.
Large hail, damaging winds and a few tornadoes will be possible,
mainly near the Red River.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Isolated thunderstorms are possible Friday and Friday night east of
Interstate 35. Though severe weather appears unlikely, a few storms
with small hail and frequent lightning are possible.

.SPOTTER INFORMATION STATEMENT...
Spotter activation is possible east of Interstate 35 through the
evening.

In the hours before

Local storm report, Apr 22, 5:20 PM CDT, 2 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
520 PM CDT WED APR 22 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0518 PM     FUNNEL CLOUD     3 SSW POTTSBORO         33.73N 96.68W
04/22/2020                   GRAYSON            TX   TRAINED SPOTTER

            WALL CLOUD WITH FUNNEL REPORTED NEAR TX-289
            AND REFUGE ROAD NEAR POTTSBORO.

&&

SB

Local storm report, Apr 22, 5:29 PM CDT, 2 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE FORT WORTH TX
529 PM CDT WED APR 22 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0518 PM     FUNNEL CLOUD     4 N POTTSBORO           33.83N 96.68W
04/22/2020                   GRAYSON            TX   TRAINED SPOTTER

            CORRECTS PREVIOUS FUNNEL CLOUD REPORT FROM 3
            SSW POTTSBORO. WALL CLOUD WITH FUNNEL
            REPORTED NEAR TX-289 AND REFUGE ROAD LOOKING
            NORTH.

&&

SB

Local storm report, Apr 22, 6:55 PM CDT, 45 minutes before

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Special weather statement, Apr 22, 7:06 PM CDT, 34 minutes before

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Local storm report, Apr 22, 7:31 PM CDT, 9 minutes before

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Local storm report, Apr 22, 7:34 PM CDT, 6 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
Apr 22, 7:06 PM CDT	Special Weather Statement	FWD	Fannin	24 min
Apr 22, 8:13 PM CDT	Special Weather Statement	FWD	Delta, Hunt	32 min
Apr 22, 8:52 PM CDT	Special Weather Statement	FWD	Hopkins	23 min
Apr 22, 9:13 PM CDT	Special Weather Statement	FWD	Hopkins	47 min

Nearby

Severe Thunderstorm Warnings in Texas, 2020 Every severe thunderstorm warning in 2020

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.