Alert archive / Oklahoma / Mesoscale Discussions in 2007

Mesoscale Discussion 2102

October 17, 2007Labette County, Montgomery County, Kansas; 14 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Oct 17, 2007, 8:38 PM CDT for Labette County, Montgomery County, Kansas; 14 counties in Oklahoma. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: Oct 17, 2007, 8:38 PM CDT (01:38 UTC)
Expired: Oct 17, 2007, 9:45 PM CDT
In force: 67 min
Issued by: the Storm Prediction Center

Counties Labette County, KS, Montgomery County, KS, Atoka County, OK, Bryan County, OK, Choctaw County, OK, Craig County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Nowata County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 102 km from the middle of the area, began a volume at 01:42 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, 1.6 hours before the alert went out and 173 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3303 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 70 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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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 17, 7:57 PM CDT	Mesoscale Discussion	SPC	Bourbon, Cherokee, Crawford	63 min
Oct 17, 8:10 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 3 more	95 min

Nearby

Mesoscale Discussions in Oklahoma, 2007 Mesoscale Discussions in Kansas, 2007 Every mesoscale discussion in 2007

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.