Alert archive / Texas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 1, NWS Norman, OK

March 15, 2014Archer County, Clay County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Mar 15, 2014, 2:05 PM CDT for Archer County, Clay County, Texas. It was in force for 40 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: Mar 15, 2014, 2:05 PM CDT (19:05 UTC)
Expired: Mar 15, 2014, 2:45 PM CDT
In force: 40 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Archer County, TX, Clay County, TX

The radar

The Altus AFB radar (KFDR), 88 km from the middle of the area, began a volume at 19:06 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

Fort Worth, TX (KFWD), launched 12:00Z, 7.1 hours before the alert went out and 145 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: 223 J/kg
Mixed-layer CIN: -147 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: -24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Mar 15, 12:43 PM CDT, 1 hour 22 minutes earlier.

Area forecast discussion, Mar 15, 12:43 PM CDT, 1 hour 22 minutes before

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Hazardous weather outlook, Mar 15, 11:35 AM CDT, 2 hours 30 minutes before

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In the hours before

Special weather statement, Mar 15, 12:12 PM CDT, 1 hour 53 minutes before

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Special weather statement, Mar 15, 12:43 PM CDT, 1 hour 22 minutes before

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Special weather statement, Mar 15, 1:10 PM CDT, 55 minutes before

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Special weather statement, Mar 15, 1:44 PM CDT, 21 minutes before

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Special weather statement, Mar 15, 1:59 PM CDT, 6 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
Mar 15, 3:01 AM CDT	Wind Advisory	OUN	Alfalfa, Atoka, Beckham, Blaine, Bryan, Caddo and 42 more	38 hr
Mar 15, 12:08 PM CDT	Areal Flood Advisory	OUN	Coal, Hughes, Pontotoc	3 hr
Mar 15, 12:12 PM CDT	Special Weather Statement	OUN	Cotton	33 min
Mar 15, 12:43 PM CDT	Special Weather Statement	OUN	Cotton	32 min
Mar 15, 1:10 PM CDT	Special Weather Statement	OUN	Jefferson	35 min
Mar 15, 1:44 PM CDT	Special Weather Statement	OUN	Jefferson	31 min
Mar 15, 3:44 PM CDT	Areal Flood Advisory	OUN	Carter, Garvin, Murray, Pontotoc, Stephens	3 hr
Mar 15, 4:28 PM CDT	Special Weather Statement	OUN	Johnston	32 min
Mar 15, 4:29 PM CDT	Special Weather Statement	OUN	Pontotoc	31 min
Mar 15, 6:27 PM CDT	Special Weather Statement	OUN	Alfalfa	33 min
Mar 15, 6:44 PM CDT	Special Weather Statement	OUN	Grant	31 min
Mar 15, 1:59 PM CDT	Special Weather Statement	OUN	Archer	46 min

Nearby

Severe Thunderstorm Warnings in Texas, 2014 Every severe thunderstorm warning in 2014

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.