Alert archive / Oklahoma / Special Weather Statements in 2012

Special Weather Statement, NWS Tulsa, OK

September 7, 2012LeFlore County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Sep 7, 2012, 6:56 PM CDT for LeFlore County, Oklahoma. It was in force for 34 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: Sep 7, 2012, 6:56 PM CDT (23:56 UTC)
Expired: Sep 7, 2012, 7:30 PM CDT
In force: 34 min
Issued by: NWS Tulsa, OK

County LeFlore County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.9 hours before the alert went out and 234 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: 460 J/kg
Mixed-layer CIN: -231 J/kg
Mixed-layer LCL: 2065 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -47 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Sep 7, 6:40 PM CDT, 16 minutes earlier.

Area forecast discussion, Sep 7, 6:40 PM CDT, 16 minutes before

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Hazardous weather outlook, Sep 7, 5:08 PM CDT, 1 hour 48 minutes before

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In the hours before

Local storm report, Sep 7, 6:29 PM CDT, 27 minutes before

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Local storm report, Sep 7, 6:33 PM CDT, 23 minutes before

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Local storm report, Sep 7, 6:34 PM CDT, 22 minutes before

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Local storm report, Sep 7, 6:35 PM CDT, 21 minutes before

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Local storm report, Sep 7, 6:43 PM CDT, 13 minutes before

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Special weather statement, Sep 7, 6:56 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
Sep 7, 3:22 AM CDT	Wind Advisory	TSA	Craig, Creek, Delaware, Mayes, Nowata, Okfuskee and 7 more	17 hr
Sep 7, 2:49 PM CDT	Special Weather Statement	TSA	Nowata, Osage, Washington	41 min
Sep 7, 2:53 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Rogers, Washington	67 min
Sep 7, 3:01 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	44 min
Sep 7, 3:32 PM CDT	Special Weather Statement	TSA	Wagoner	28 min
Sep 7, 3:40 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	50 min
Sep 7, 3:46 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers	44 min
Sep 7, 3:47 PM CDT	Red Flag Warning	TSA	Cherokee, Haskell, Latimer, McIntosh, Mayes, Muskogee and 3 more	4 hr
Sep 7, 3:54 PM CDT	Special Weather Statement	TSA	Creek, Okfuskee	51 min
Sep 7, 3:58 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	17 min
Sep 7, 4:04 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee	56 min
Sep 7, 4:09 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes	51 min
Sep 7, 4:25 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Ottawa	35 min
Sep 7, 4:36 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Muskogee, Okmulgee, Wagoner	39 min
Sep 7, 4:53 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okmulgee, Wagoner	52 min
Sep 7, 5:01 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Muskogee, Sequoyah	59 min
Sep 7, 5:30 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, McIntosh, Muskogee, Pittsburg, Sequoyah	60 min
Sep 7, 5:55 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Haskell, Latimer, LeFlore, Sequoyah	65 min
Sep 7, 6:21 PM CDT	Special Weather Statement	TSA	Latimer	24 min
Sep 7, 6:37 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	38 min
Sep 6, 7:01 PM CDT	Severe Thunderstorm Warning	TSA	Madison	44 min
Sep 6, 7:32 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison	43 min
Sep 6, 8:06 PM CDT	Special Weather Statement	TSA	Carroll	39 min
Sep 6, 8:13 PM CDT	Severe Thunderstorm Warning	TSA	Carroll	32 min
Sep 7, 4:39 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison	51 min
Sep 7, 5:39 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Crawford, Franklin, Madison, Washington	51 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.