Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Fort Worth, TX

December 10, 2021Hopkins County, Texas

NWS Fort Worth, TX issued this special weather statement at Dec 10, 2021, 9:37 PM CST for Hopkins County, Texas. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 10, 2021, 9:37 PM CST (03:37 UTC)
Expired: Dec 10, 2021, 10:15 PM CST
In force: 38 min
Issued by: NWS Fort Worth, TX
Hail: 0.75 in
Wind: 30

County Hopkins County, TX

The radar

The Shreveport radar (KSHV), 169 km from the middle of the area, began a volume at 03:38 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

Shreveport, LA (KSHV), launched 00:00Z, 3.6 hours before the alert went out and 175 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: 1338 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1005 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 334 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Dec 10, 5:41 PM CST, 3 hours 56 minutes earlier.

Area forecast discussion, Dec 10, 5:41 PM CST, 3 hours 56 minutes before

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Hazardous weather outlook, Dec 10, 5:52 PM CST, 3 hours 45 minutes before

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In the hours before

Special weather statement, Dec 10, 4:35 PM CST, 5 hours 2 minutes before

Special Weather Statement
National Weather Service Fort Worth TX
435 PM CST Fri Dec 10 2021

TXZ104-105-119-120-102300-
Hunt TX-Collin TX-Rockwall TX-Dallas TX-
435 PM CST Fri Dec 10 2021

...A strong thunderstorm will impact portions of Rockwall,
southwestern Hunt, southeastern Collin and northeastern Dallas
Counties through 500 PM CST...

At 434 PM CST, Doppler radar was tracking a strong thunderstorm over
Rockwall, moving northeast at 50 mph.

HAZARD...Penny size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Garland, Rowlett, Wylie, Rockwall, Sachse, Royse City, Heath, Fate,
Sunnyvale, Farmersville, Caddo Mills, Mobile City, Lavon,
McLendon-Chisholm, Nevada and Josephine.

This includes Interstate 30 between mile markers 61 and 89.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3281 9642 3281 9652 3276 9652 3292 9663
      3324 9631 3298 9607
TIME...MOT...LOC 2234Z 229DEG 42KT 3291 9649

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...<30 MPH

Gordon

Local storm report, Dec 10, 5:45 PM CST, 3 hours 52 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
Dec 10, 9:35 PM CST	Special Weather Statement	FWD	Rains, Van Zandt	25 min
Dec 10, 9:58 PM CST	Special Weather Statement	FWD	Wood	32 min
Dec 10, 10:11 PM CST	Special Weather Statement	FWD	Henderson	34 min
Dec 11, 12:20 AM CST	Special Weather Statement	FWD	Leon	40 min
Dec 11, 3:07 PM CST	Freeze Warning	FWD	Anderson, Bell, Falls, Freestone, Henderson, Leon and 5 more	17 hr

Nearby

Special Weather Statements in Texas, 2021 Every special weather statement in 2021

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.