Alert archive / Missouri / Mesoscale Discussions in 2005

Mesoscale Discussion 638

April 21, 2005Cherokee County, Kansas; 28 counties in Missouri; Craig County, Ottawa County, Rogers County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 21, 2005, 7:47 PM CDT for Cherokee County, Kansas; 28 counties in Missouri; Craig County, Ottawa County, Rogers County, Oklahoma. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Apr 21, 2005, 7:47 PM CDT (00:47 UTC)
Expired: Apr 21, 2005, 9:15 PM CDT
In force: 88 min
Issued by: the Storm Prediction Center

All 32 counties

Cherokee County, KS, Barry County, MO, Barton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Craig County, OK, Ottawa County, OK, Rogers County, OK

The radar

The Springfield radar (KSGF), 32 km from the middle of the area, began a volume at 00:49 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 00:00Z, 0.8 hours before the alert went out and 33 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: 1218 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1229 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.4

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
Apr 21, 8:03 PM CDT	Mesoscale Discussion	SPC	Audrain, Boone, Callaway, Franklin, Gasconade, Howard and 12 more	87 min
Apr 21, 8:19 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Madison and 7 more	86 min
Apr 21, 9:50 PM CDT	Mesoscale Discussion	SPC	Caldwell, Carroll, Cass, Clay, Clinton, Daviess and 8 more	55 min
Apr 21, 10:25 PM CDT	Mesoscale Discussion	SPC	Audrain, Bollinger, Butler, Callaway, Camden, Carter and 38 more	65 min
Apr 21, 11:50 PM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 20 more	6 hr
Apr 22, 3:09 AM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Dunklin, Mississippi, New Madrid and 5 more	66 min
Apr 21, 10:16 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Delaware, Haskell, Hughes, Latimer and 9 more	119 min

Nearby

Mesoscale Discussions in Missouri, 2005 Mesoscale Discussions in Oklahoma, 2005 Mesoscale Discussions in Kansas, 2005 Every mesoscale discussion in 2005

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.