Alert archive / Oklahoma / Special Weather Statements in 2011

Special Weather Statement, NWS Tulsa, OK

August 12, 201111 counties in Oklahoma

NWS Tulsa, OK issued this special weather statement at Aug 12, 2011, 10:47 PM CDT for 11 counties in Oklahoma. It was in force for 43 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: Aug 12, 2011, 10:47 PM CDT (03:47 UTC)
Expired: Aug 12, 2011, 11:30 PM CDT
In force: 43 min
Issued by: NWS Tulsa, OK

Counties Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 36 km from the middle of the area, began a volume at 03:47 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

Springfield, MO (KSGF), launched 00:00Z, 3.8 hours before the alert went out and 144 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: 243 J/kg
Mixed-layer CIN: -371 J/kg
Mixed-layer LCL: 1806 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 429 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Tulsa, OK wrote its last area forecast discussion before this special weather statement went out at Aug 12, 8:49 PM CDT, 1 hour 58 minutes earlier.

Area forecast discussion, Aug 12, 8:49 PM CDT, 1 hour 58 minutes before

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Hazardous weather outlook, Aug 12, 8:59 PM CDT, 1 hour 48 minutes before

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In the hours before

Local storm report, Aug 12, 7:26 PM CDT, 3 hours 21 minutes before

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Special weather statement, Aug 12, 7:32 PM CDT, 3 hours 15 minutes before

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Special weather statement, Aug 12, 7:41 PM CDT, 3 hours 6 minutes before

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Special weather statement, Aug 12, 8:53 PM CDT, 1 hour 54 minutes before

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Special weather statement, Aug 12, 9:51 PM CDT, 56 minutes before

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Special weather statement, Aug 12, 10:47 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 7:32 PM CDT	Special Weather Statement	TSA	Haskell, LeFlore	43 min
Aug 12, 7:41 PM CDT	Special Weather Statement	TSA	Haskell	34 min
Aug 12, 8:53 PM CDT	Special Weather Statement	TSA	Osage, Pawnee	67 min
Aug 12, 9:32 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	58 min
Aug 12, 9:51 PM CDT	Special Weather Statement	TSA	Craig, Delaware, Nowata, Washington	54 min
Aug 12, 11:32 PM CDT	Flash Flood Warning	TSA	Mayes, Rogers	4 hr
Aug 12, 11:32 PM CDT	Special Weather Statement	TSA	Adair, Cherokee, Delaware, Mayes, Rogers, Wagoner	43 min
Aug 13, 12:18 AM CDT	Special Weather Statement	TSA	Adair, Sequoyah	42 min
Aug 12, 7:04 PM CDT	Severe Thunderstorm Warning	TSA	Sebastian	26 min

Nearby

Special Weather Statements in Oklahoma, 2011 Every special weather statement in 2011

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.