Alert archive / Oklahoma / Special Weather Statements in 2012

Special Weather Statement, NWS Tulsa, OK

April 13, 2012Osage County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Apr 13, 2012, 6:01 PM CDT for Osage County, Oklahoma. It was in force for 29 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: Apr 13, 2012, 6:01 PM CDT (23:01 UTC)
Expired: Apr 13, 2012, 6:30 PM CDT
In force: 29 min
Issued by: NWS Tulsa, OK

County Osage County, OK

The radar

The Tulsa radar (KINX), 117 km from the middle of the area, began a volume at 23:01 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

Lamont, OK (KLMN), launched 12:00Z, 11.0 hours before the alert went out and 67 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: 1335 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 655 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 423 m²/s²
0-3 km storm-relative helicity: 437 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 12.6

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 Apr 13, 4:06 PM CDT, 1 hour 55 minutes earlier.

Area forecast discussion, Apr 13, 4:06 PM CDT, 1 hour 55 minutes before

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Hazardous weather outlook, Apr 13, 5:08 PM CDT, 53 minutes before

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In the hours before

Special weather statement, Apr 13, 4:24 PM CDT, 1 hour 37 minutes before

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Local storm report, Apr 13, 4:30 PM CDT, 1 hour 31 minutes before

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Special weather statement, Apr 13, 4:38 PM CDT, 1 hour 23 minutes before

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Special weather statement, Apr 13, 5:05 PM CDT, 56 minutes before

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Special weather statement, Apr 13, 5:20 PM CDT, 41 minutes before

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Special weather statement, Apr 13, 6:01 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
Apr 13, 3:17 PM CDT	Special Weather Statement	TSA	Washington	28 min
Apr 13, 3:45 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Washington	45 min
Apr 13, 4:24 PM CDT	Special Weather Statement	TSA	Nowata	36 min
Apr 13, 4:38 PM CDT	Special Weather Statement	TSA	Craig	37 min
Apr 13, 5:05 PM CDT	Special Weather Statement	TSA	Washington	25 min
Apr 13, 5:20 PM CDT	Special Weather Statement	TSA	Pawnee	25 min
Apr 13, 5:30 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	19 min
Apr 13, 6:18 PM CDT	Special Weather Statement	TSA	Creek	27 min
Apr 13, 6:55 PM CDT	Special Weather Statement	TSA	Creek	35 min

Nearby

Special Weather Statements in Oklahoma, 2012 Every special weather statement in 2012

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.