Alert archive / Oklahoma / Mesoscale Discussions in 2007

Mesoscale Discussion 1098

June 11, 200710 counties in Arkansas; 14 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2007, 3:44 PM CDT for 10 counties in Arkansas; 14 counties in Oklahoma. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Jun 11, 2007, 3:44 PM CDT (20:44 UTC)
Expired: Jun 11, 2007, 5:15 PM CDT
In force: 91 min
Issued by: the Storm Prediction Center

All 24 counties

Hempstead County, AR, Howard County, AR, Montgomery County, AR, Nevada County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Yell County, AR, Creek County, OK, Haskell County, OK, Hughes County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, McIntosh County, OK, Noble County, OK, Okfuskee County, OK, Okmulgee County, OK, Payne County, OK, Pittsburg County, OK, Seminole County, OK

The radar

The Tulsa radar (KINX), 107 km from the middle of the area, began a volume at 20:45 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 12:00Z, 8.7 hours before the alert went out and 248 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: 35 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1192 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 241 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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
Jun 10, 7:52 PM CDT	Mesoscale Discussion	SPC	Crawford, Franklin, Johnson, Logan, Newton, Scott and 1 more	53 min
Jun 11, 4:39 PM CDT	Mesoscale Discussion	SPC	Hempstead, Howard, Montgomery, Nevada, Pike, Polk and 4 more	96 min
Jun 10, 8:06 PM CDT	Mesoscale Discussion	SPC	Ottawa	84 min

Nearby

Mesoscale Discussions in Oklahoma, 2007 Mesoscale Discussions in Arkansas, 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.