Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 648, NWS Norman, OK

June 21, 2019Foard County, Hardeman County, Knox County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Jun 21, 2019, 11:39 PM CDT for Foard County, Hardeman County, Knox County, Texas. It was in force for 51 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: Jun 21, 2019, 11:39 PM CDT (04:39 UTC)
Expired: Jun 22, 2019, 12:30 AM CDT
In force: 51 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Foard County, TX, Hardeman County, TX, Knox County, TX

The radar

The Altus AFB radar (KFDR), 85 km from the middle of the area, began a volume at 04:41 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 00:00Z, 4.7 hours before the alert went out and 257 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: 3570 J/kg
Mixed-layer CIN: -196 J/kg
Mixed-layer LCL: 1465 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 207 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.0

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 21, 4:04 PM CDT, 7 hours 35 minutes earlier.

Area forecast discussion, Jun 21, 4:04 PM CDT, 7 hours 35 minutes before

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Hazardous weather outlook, Jun 21, 9:21 PM CDT, 2 hours 18 minutes before

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In the hours before

Special weather statement, Jun 21, 10:52 PM CDT, 47 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 22, 3:27 PM CDT	Special Weather Statement	OUN	Atoka, Bryan, Coal, Hughes, Johnston, Marshall and 2 more	33 min
Jun 22, 4:07 PM CDT	Special Weather Statement	OUN	Bryan	8 min
Jun 22, 4:30 PM CDT	Special Weather Statement	OUN	Bryan	15 min
Jun 22, 4:36 PM CDT	Special Weather Statement	OUN	Atoka, Coal	24 min
Jun 22, 4:47 PM CDT	Special Weather Statement	OUN	Alfalfa	28 min
Jun 22, 4:50 PM CDT	Special Weather Statement	OUN	Seminole	25 min
Jun 22, 4:58 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	47 min
Jun 22, 5:04 PM CDT	Special Weather Statement	OUN	Seminole	26 min
Jun 22, 5:05 PM CDT	Special Weather Statement	OUN	Atoka	25 min
Jun 22, 5:34 PM CDT	Special Weather Statement	OUN	Woods	26 min
Jun 22, 6:11 PM CDT	Special Weather Statement	OUN	Alfalfa	19 min
Jun 22, 6:22 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major, Woodward	38 min
Jun 22, 6:43 PM CDT	Severe Thunderstorm Warning	OUN	Woods	29 min
Jun 22, 6:45 PM CDT	Special Weather Statement	OUN	Alfalfa	15 min
Jun 21, 10:52 PM CDT	Special Weather Statement	OUN	Foard, Hardeman	23 min
Jun 21, 10:59 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	46 min
Jun 22, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	44 min
Jun 22, 12:26 AM CDT	Special Weather Statement	OUN	Foard	34 min

Nearby

Severe Thunderstorm Warnings in Texas, 2019 Every severe thunderstorm warning in 2019

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.