Alert archive / Missouri / Mesoscale Discussions in 2015

Mesoscale Discussion 213

April 7, 201515 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 7, 2015, 3:51 AM CDT for 15 counties in Missouri. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: Apr 7, 2015, 3:51 AM CDT (08:51 UTC)
Expired: Apr 7, 2015, 4:45 AM CDT
In force: 54 min
Issued by: the Storm Prediction Center
Chance of a watch: 5%

Counties Audrain County, MO, Boone County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Daviess County, MO, DeKalb County, MO, Howard County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Monroe County, MO, Randolph County, MO, Saline County, MO, Shelby County, MO

The radar

The Pleasant Hill radar (KEAX), 140 km from the middle of the area, began a volume at 08:54 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 (KFOE), launched 00:00Z, 8.9 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1110 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 172 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
Apr 7, 8:17 AM CDT	Mesoscale Discussion	SPC	Franklin, Jefferson, Perry, Saint Charles, Sainte Genevieve, Saint Francois and 3 more	88 min
Apr 7, 8:34 AM CDT	Severe Thunderstorm Watch	SPC	Cape Girardeau, Jefferson, Perry, Sainte Genevieve, Saint Louis, City of Saint Louis	7 hr
Apr 7, 10:51 AM CDT	Mesoscale Discussion	SPC	Cape Girardeau, Perry, Sainte Genevieve, Saint Francois, Washington	54 min
Apr 7, 1:14 PM CDT	Mesoscale Discussion	SPC	Cape Girardeau, Perry	61 min
Apr 7, 1:37 PM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Cape Girardeau, Perry	5 hr
Apr 7, 2:53 PM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Perry, Scott	97 min
Apr 7, 5:03 PM CDT	Mesoscale Discussion	SPC	Barton, Bates, Cass, Cedar, Dade, Greene and 9 more	2 hr

Nearby

Mesoscale Discussions in Missouri, 2015 Every mesoscale discussion in 2015

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.