Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 243, NWS Fort Worth, TX

October 12, 2013Collin County, Denton County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Oct 12, 2013, 3:51 PM CDT for Collin County, Denton County, Texas. It was in force for 39 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: Oct 12, 2013, 3:51 PM CDT (20:51 UTC)
Expired: Oct 12, 2013, 4:30 PM CDT
In force: 39 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Collin County, TX, Denton County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 82 km from the middle of the area, began a volume at 20:53 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

Norman, OK (KOUN), launched 12:00Z, 8.9 hours before the alert went out and 231 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: 164 J/kg
Mixed-layer CIN: -213 J/kg
Mixed-layer LCL: 1002 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Oct 12, 3:01 PM CDT, 50 minutes earlier.

Area forecast discussion, Oct 12, 3:01 PM CDT, 50 minutes before

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Hazardous weather outlook, Oct 12, 2:38 PM CDT, 1 hour 13 minutes before

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In the hours before

Special weather statement, Oct 12, 2:43 PM CDT, 1 hour 8 minutes before

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Special weather statement, Oct 12, 2:56 PM CDT, 55 minutes before

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Local storm report, Oct 12, 2:58 PM CDT, 53 minutes before

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Special weather statement, Oct 12, 3:14 PM CDT, 37 minutes before

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Special weather statement, Oct 12, 3:31 PM CDT, 20 minutes before

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Special weather statement, Oct 12, 3:35 PM CDT, 16 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
Oct 12, 10:59 AM CDT	Special Weather Statement	FWD	Freestone	31 min
Oct 12, 11:16 AM CDT	Severe Thunderstorm Warning	FWD	Freestone	59 min
Oct 12, 11:55 AM CDT	Special Weather Statement	FWD	Hamilton	35 min
Oct 12, 12:41 PM CDT	Special Weather Statement	FWD	Houston	34 min
Oct 12, 12:48 PM CDT	Special Weather Statement	FWD	Bosque	27 min
Oct 12, 12:58 PM CDT	Special Weather Statement	FWD	Henderson	32 min
Oct 12, 1:01 PM CDT	Severe Thunderstorm Warning	FWD	Henderson	59 min
Oct 12, 1:14 PM CDT	Special Weather Statement	FWD	Parker	31 min
Oct 12, 1:18 PM CDT	Special Weather Statement	FWD	Bosque	27 min
Oct 12, 1:28 PM CDT	Severe Thunderstorm Warning	FWD	Bosque	62 min
Oct 12, 2:07 PM CDT	Special Weather Statement	FWD	Hill	23 min
Oct 12, 2:34 PM CDT	Special Weather Statement	FWD	McLennan	26 min
Oct 12, 2:43 PM CDT	Special Weather Statement	FWD	Denton	32 min
Oct 12, 2:56 PM CDT	Special Weather Statement	FWD	Limestone, Navarro	34 min
Oct 12, 3:14 PM CDT	Special Weather Statement	FWD	Grayson	31 min
Oct 12, 3:31 PM CDT	Special Weather Statement	FWD	Falls, Freestone, Limestone	29 min
Oct 12, 3:35 PM CDT	Special Weather Statement	FWD	Denton	25 min
Oct 12, 3:57 PM CDT	Severe Thunderstorm Warning	FWD	Freestone, Leon	63 min
Oct 12, 4:24 PM CDT	Special Weather Statement	FWD	Fannin, Lamar	36 min
Oct 12, 4:48 PM CDT	Special Weather Statement	FWD	Denton	27 min
Oct 12, 4:50 PM CDT	Special Weather Statement	FWD	Lamar	25 min
Oct 12, 5:40 PM CDT	Special Weather Statement	FWD	Delta	35 min
Oct 12, 5:47 PM CDT	Special Weather Statement	FWD	Hood	28 min
Oct 12, 6:31 PM CDT	Areal Flood Advisory	FWD	Milam	119 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013 Every severe thunderstorm warning in 2013

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.