Alert archive / Missouri / Mesoscale Discussions in 2008

Mesoscale Discussion 652

April 17, 200810 counties in Kansas; 19 counties in Missouri; 4 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 17, 2008, 4:51 PM CDT for 10 counties in Kansas; 19 counties in Missouri; 4 counties in Oklahoma. It was in force for 24 min.

The area

The outline as issued.

The facts

Issued: Apr 17, 2008, 4:51 PM CDT (21:51 UTC)
Expired: Apr 17, 2008, 5:15 PM CDT
In force: 24 min
Issued by: the Storm Prediction Center

All 33 counties

Allen County, KS, Bourbon County, KS, Cherokee County, KS, Crawford 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, Benton County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Dade County, MO, Henry County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Lafayette County, MO, McDonald County, MO, Newton County, MO, Pettis County, MO, Ray County, MO, St. Clair County, MO, Vernon County, MO, Craig County, OK, Delaware County, OK, Nowata County, OK, Ottawa County, OK

The radar

The Springfield radar (KSGF), 116 km from the middle of the area, began a volume at 21:53 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 12:00Z, 9.9 hours before the alert went out and 169 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: 984 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 315 m²/s²
0-3 km storm-relative helicity: 294 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 16, 10:37 PM CDT	Mesoscale Discussion	SPC	Barton, Clark, Comanche, Edwards, Ellis, Ellsworth and 21 more	23 min
Apr 17, 12:03 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Barton, Coffey, Dickinson, Douglas, Edwards and 30 more	5 hr
Apr 17, 1:26 AM CDT	Mesoscale Discussion	SPC	Barber, Barton, Chase, Clark, Clay, Comanche and 36 more	94 min
Apr 17, 3:11 AM CDT	Mesoscale Discussion	SPC	Barton, Chase, Dickinson, Douglas, Edwards, Ellsworth and 20 more	94 min
Apr 17, 1:30 PM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Carter, Cleveland, Coal, Garvin and 13 more	3 hr
Apr 17, 2:56 PM CDT	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Carter, Cleveland, Coal, Creek and 21 more	7 hr

Nearby

Mesoscale Discussions in Missouri, 2008 Mesoscale Discussions in Kansas, 2008 Mesoscale Discussions in Oklahoma, 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.