Alert archive / Missouri / Mesoscale Discussions in 2006

Mesoscale Discussion 1900

August 27, 20065 states

The Storm Prediction Center issued this mesoscale discussion at Aug 27, 2006, 12:13 PM CDT for 5 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 27, 2006, 12:13 PM CDT (17:13 UTC)
Expired: Aug 27, 2006, 2:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 68 counties

Baxter County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Fulton County, AR, Izard County, AR, Johnson County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Searcy County, AR, Stone County, AR, Van Buren County, AR, Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Pike County, IN, Posey County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Carlisle County, KY, Crittenden County, KY, Daviess County, KY, Henderson County, KY, Livingston County, KY, McCracken County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Wayne County, MO, Webster County, MO, Wright County, MO

The radar

The Memphis radar (KNQA), 200 km from the middle of the area, began a volume at 17:15 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, 5.2 hours before the alert went out and 244 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: 80 J/kg
Mixed-layer CIN: -188 J/kg
Mixed-layer LCL: 1274 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: -18 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
Aug 26, 8:06 PM CDT	Mesoscale Discussion	SPC	Adams, Allen, Bartholomew, Benton, Blackford, Boone and 63 more	24 min
Aug 26, 8:21 PM CDT	Tornado Watch	SPC	Bartholomew, Blackford, Boone, Brown, Carroll, Cass and 42 more	5 hr
Aug 26, 11:47 PM CDT	Mesoscale Discussion	SPC	Adams, Bartholomew, Blackford, Boone, Brown, Clay and 42 more	88 min
Aug 27, 12:43 AM CDT	Mesoscale Discussion	SPC	Bartholomew, Brown, Dearborn, Decatur, Delaware, Fayette and 21 more	92 min
Aug 27, 2:11 PM CDT	Mesoscale Discussion	SPC	Clark, Dearborn, Decatur, Franklin, Jefferson, Jennings and 5 more	2 hr
Aug 26, 9:46 PM CDT	Mesoscale Discussion	SPC	Barton, Jasper, McDonald, Newton, Vernon	89 min

Nearby

Mesoscale Discussions in Missouri, 2006 Mesoscale Discussions in Arkansas, 2006 Mesoscale Discussions in Illinois, 2006 Every mesoscale discussion in 2006

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.