Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 246, NWS Norman, OK

August 8, 2014Atoka County, Bryan County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Aug 8, 2014, 8:27 PM CDT for Atoka County, Bryan County, Oklahoma. It was in force for 22 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: Aug 8, 2014, 8:27 PM CDT (01:27 UTC)
Expired: Aug 8, 2014, 8:49 PM CDT
In force: 22 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Atoka County, OK, Bryan County, OK

The radar

The Norman radar (KTLX), 166 km from the middle of the area, began a volume at 01:27 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, 1.5 hours before the alert went out and 164 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: 2903 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1083 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.9

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 Aug 8, 7:35 PM CDT, 52 minutes earlier.

Area forecast discussion, Aug 8, 7:35 PM CDT, 52 minutes before

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Hazardous weather outlook, Aug 8, 4:37 PM CDT, 3 hours 50 minutes before

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In the hours before

Special weather statement, Aug 8, 5:09 PM CDT, 3 hours 18 minutes before

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Special weather statement, Aug 8, 5:35 PM CDT, 2 hours 52 minutes before

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Local storm report, Aug 8, 8:15 PM CDT, 12 minutes before

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Special weather statement, Aug 8, 8:24 PM CDT, 3 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
Aug 8, 7:44 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	25 min
Aug 8, 8:24 PM CDT	Special Weather Statement	OUN	Atoka	36 min
Aug 9, 8:49 AM CDT	Special Weather Statement	OUN	Noble	26 min
Aug 9, 3:42 PM CDT	Special Weather Statement	OUN	Atoka	33 min
Aug 9, 4:16 PM CDT	Special Weather Statement	OUN	Atoka	29 min
Aug 9, 4:20 PM CDT	Special Weather Statement	OUN	Cleveland	25 min
Aug 9, 4:25 PM CDT	Special Weather Statement	OUN	Pontotoc	35 min
Aug 9, 4:54 PM CDT	Areal Flood Advisory	OUN	Cleveland	3 hr
Aug 9, 5:09 PM CDT	Special Weather Statement	OUN	Oklahoma	36 min
Aug 9, 5:24 PM CDT	Special Weather Statement	OUN	Pottawatomie	36 min
Aug 9, 5:44 PM CDT	Special Weather Statement	OUN	Oklahoma	31 min
Aug 9, 5:47 PM CDT	Special Weather Statement	OUN	Bryan	28 min
Aug 9, 5:53 PM CDT	Special Weather Statement	OUN	Pontotoc	37 min
Aug 9, 6:30 PM CDT	Special Weather Statement	OUN	Pottawatomie	45 min
Aug 9, 6:31 PM CDT	Special Weather Statement	OUN	Johnston	29 min
Aug 9, 3:58 PM CDT	Special Weather Statement	OUN	Baylor	32 min
Aug 9, 4:13 PM CDT	Special Weather Statement	OUN	Clay	32 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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.