Alert archive / Missouri / Mesoscale Discussions in 2012

Mesoscale Discussion 1988

September 25, 20129 counties in Kansas; 13 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Sep 25, 2012, 8:03 PM CDT for 9 counties in Kansas; 13 counties in Missouri. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Sep 25, 2012, 8:03 PM CDT (01:03 UTC)
Expired: Sep 25, 2012, 9:30 PM CDT
In force: 87 min
Issued by: the Storm Prediction Center

All 22 counties

Allen County, KS, Bourbon County, KS, Butler County, KS, Crawford County, KS, Elk County, KS, Greenwood County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barton County, MO, Camden County, MO, Cedar County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Hickory County, MO, Laclede County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 124 km from the middle of the area, began a volume at 01:03 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, 1.1 hours before the alert went out and 135 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: 916 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 2239 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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
Sep 26, 1:50 PM CDT	Mesoscale Discussion	SPC	Grant, Hamilton, Kearny, Morton, Stanton, Stevens	55 min
Sep 26, 3:59 PM CDT	Severe Thunderstorm Watch	SPC	Grant, Haskell, Morton, Seward, Stanton, Stevens	7 hr
Sep 26, 1:26 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Douglas, Dunklin and 15 more	94 min

Nearby

Mesoscale Discussions in Missouri, 2012 Mesoscale Discussions in Kansas, 2012 Every mesoscale discussion in 2012

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.