Alert archive / Missouri / Mesoscale Discussions in 2015

Mesoscale Discussion 1567

July 28, 20159 counties in Iowa; 14 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Jul 28, 2015, 10:46 PM CDT for 9 counties in Iowa; 14 counties in Missouri. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jul 28, 2015, 10:46 PM CDT (03:46 UTC)
Expired: Jul 29, 2015, 12:15 AM CDT
In force: 89 min
Issued by: the Storm Prediction Center

All 23 counties

Appanoose County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Van Buren County, IA, Washington County, IA, Adair County, MO, Andrew County, MO, Clark County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Sullivan County, MO, Worth County, MO

The radar

The Des Moines radar (KDMX), 143 km from the middle of the area, began a volume at 03:47 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, 3.8 hours before the alert went out and 254 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: 1671 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 1857 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.1

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
Jul 28, 8:04 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Cass, Clarke, Dallas and 29 more	116 min
Jul 29, 1:31 AM CDT	Mesoscale Discussion	SPC	Adair, Audrain, Chariton, Knox, Lewis, Lincoln and 7 more	2 hr

Nearby

Mesoscale Discussions in Missouri, 2015 Mesoscale Discussions in Iowa, 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.