Alert archive / Missouri / Mesoscale Discussions in 2008

Mesoscale Discussion 682

April 22, 200812 counties in Kansas; 16 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 22, 2008, 1:14 AM CDT for 12 counties in Kansas; 16 counties in Missouri. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: Apr 22, 2008, 1:14 AM CDT (06:14 UTC)
Expired: Apr 22, 2008, 2:45 AM CDT
In force: 91 min
Issued by: the Storm Prediction Center

All 28 counties

Allen County, KS, Anderson County, KS, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Franklin County, KS, Johnson County, KS, Labette County, KS, Linn County, KS, Miami County, KS, Neosho County, KS, Wyandotte County, KS, Barton County, MO, Bates County, MO, Caldwell County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Clinton County, MO, Henry County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Lafayette County, MO, Platte County, MO, Ray County, MO, St. Clair County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 80 km from the middle of the area, began a volume at 06:14 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

Topeka, KS (KTOP), launched 00:00Z, 6.2 hours before the alert went out and 129 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: 1388 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1301 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.9

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
Apr 21, 7:03 PM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Atchison, Brown, Butler, Chase and 29 more	7 hr
Apr 21, 10:38 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Brown, Butler, Chase and 29 more	2 hr
Apr 22, 7:42 AM CDT	Mesoscale Discussion	SPC	Barry, Carter, Christian, Douglas, Greene, Howell and 10 more	63 min
Apr 22, 7:49 AM CDT	Severe Thunderstorm Watch	SPC	Barry, Christian, Dent, Douglas, Greene, Howell and 11 more	6 hr
Apr 22, 9:41 AM CDT	Mesoscale Discussion	SPC	Cape Girardeau, Perry, Scott	94 min
Apr 22, 10:12 AM CDT	Mesoscale Discussion	SPC	Barry, Christian, Douglas, Howell, McDonald, Oregon and 3 more	93 min
Apr 22, 10:47 AM CDT	Severe Thunderstorm Watch	SPC	Dunklin, Pemiscot	5 hr
Apr 22, 12:16 PM CDT	Mesoscale Discussion	SPC	Dunklin, Ozark, Pemiscot, Taney	89 min
Apr 22, 2:06 PM CDT	Severe Thunderstorm Watch	SPC	Barry, Christian, Lawrence, McDonald, Newton, Stone and 1 more	7 hr
Apr 22, 3:30 PM CDT	Mesoscale Discussion	SPC	Barry, Christian, Greene, Lawrence, McDonald, Newton and 2 more	90 min
Apr 22, 6:51 PM CDT	Mesoscale Discussion	SPC	Barry, Christian, Greene, McDonald, Newton, Stone	114 min

Nearby

Mesoscale Discussions in Missouri, 2008 Mesoscale Discussions in Kansas, 2008 Every mesoscale discussion in 2008

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.