Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 23, NWS Tulsa, OK

April 7, 20109 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 7, 2010, 12:31 AM CDT for 9 counties in Oklahoma. It was in force for 59 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: Apr 7, 2010, 12:31 AM CDT (05:31 UTC)
Expired: Apr 7, 2010, 1:30 AM CDT
In force: 59 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

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

The radar

The Tulsa radar (KINX), 35 km from the middle of the area, began a volume at 05:32 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 6, 8:53 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 5.5 hours before the alert went out and 208 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: 1675 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1732 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 291 m²/s²
0-3 km storm-relative helicity: 268 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 11.9

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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 6, 11:55 PM CDT, 36 minutes earlier.

Area forecast discussion, Apr 6, 11:55 PM CDT, 36 minutes before

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Hazardous weather outlook, Apr 6, 10:40 PM CDT, 1 hour 51 minutes before

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In the hours before

Special weather statement, Apr 6, 11:29 PM CDT, 1 hour 2 minutes before

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Local storm report, Apr 6, 11:35 PM CDT, 56 minutes before

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Local storm report, Apr 6, 11:53 PM CDT, 38 minutes before

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Local storm report, Apr 7, 12:11 AM CDT, 20 minutes before

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Local storm report, Apr 7, 12:24 AM CDT, 7 minutes before

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Local storm report, Apr 7, 12:31 AM 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 6, 8:51 PM CDT	Special Weather Statement	TSA	Osage	24 min
Apr 6, 9:37 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	53 min
Apr 6, 10:25 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa, Washington	65 min
Apr 6, 11:24 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Washington	51 min
Apr 6, 11:29 PM CDT	Special Weather Statement	TSA	Creek, Rogers, Tulsa	61 min
Apr 6, 11:49 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Creek, Mayes, Osage, Rogers, Tulsa and 2 more	56 min
Apr 6, 11:53 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Ottawa, Rogers	52 min
Apr 7, 12:12 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	26 min
Apr 7, 12:50 AM CDT	Special Weather Statement	TSA	McIntosh	40 min
Apr 7, 1:22 AM CDT	Special Weather Statement	TSA	Haskell, McIntosh, Muskogee	53 min
Apr 7, 1:27 AM CDT	Special Weather Statement	TSA	Delaware	63 min
Apr 7, 2:14 AM CDT	Special Weather Statement	TSA	Adair	61 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2010 Every severe thunderstorm warning in 2010

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.