Alert archive / Missouri / Mesoscale Discussions in 2005

Mesoscale Discussion 64

January 12, 20058 counties in Iowa; 14 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jan 12, 2005, 10:42 AM CST for 8 counties in Iowa; 14 counties in Missouri. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Jan 12, 2005, 10:42 AM CST (16:42 UTC)
Expired: Jan 12, 2005, 11:45 AM CST
In force: 63 min
Issued by: the Storm Prediction Center

All 22 counties

Appanoose County, IA, Clarke County, IA, Decatur County, IA, Lucas County, IA, Monroe County, IA, Ringgold County, IA, Union County, IA, Wayne County, IA, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Livingston County, MO, Mercer County, MO, Putnam County, MO, Sullivan County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 158 km from the middle of the area, began a volume at 16:41 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, 4.7 hours before the alert went out and 212 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: 5 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 376 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 392 m²/s²
0-3 km storm-relative helicity: 374 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
Jan 12, 7:06 AM CST	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Boone, Carroll, Cass and 18 more	5 hr
Jan 12, 12:29 PM CST	Mesoscale Discussion	SPC	Clarke, Decatur, Jasper, Lucas, Marion, Marshall and 3 more	4 hr
Jan 12, 3:03 PM CST	Mesoscale Discussion	SPC	Audrain, Barry, Benton, Boone, Callaway, Camden and 40 more	87 min
Jan 12, 3:05 PM CST	Severe Thunderstorm Watch	SPC	McDonald, Newton	7 hr
Jan 12, 3:35 PM CST	Severe Thunderstorm Watch	SPC	Audrain, Barry, Benton, Boone, Callaway, Camden and 43 more	6 hr
Jan 12, 4:25 PM CST	Mesoscale Discussion	SPC	Marion	2 hr
Jan 12, 5:38 PM CST	Mesoscale Discussion	SPC	McDonald, Newton	97 min

Nearby

Mesoscale Discussions in Missouri, 2005 Mesoscale Discussions in Iowa, 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.