Alert archive / Missouri / Mesoscale Discussions in 2016

Mesoscale Discussion 605

May 11, 201633 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 11, 2016, 3:07 PM CDT for 33 counties in Missouri. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: May 11, 2016, 3:07 PM CDT (20:07 UTC)
Expired: May 11, 2016, 4:00 PM CDT
In force: 53 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 33 counties

Audrain County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Christian County, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Gasconade County, MO, Howard County, MO, Howell County, MO, Iron County, MO, Laclede County, MO, Madison County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Pulaski County, MO, Randolph County, MO, Reynolds County, MO, Saline County, MO, Shannon County, MO, Texas County, MO, Washington County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 118 km from the middle of the area, began a volume at 20:07 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 171May 11, 6:25 PM CDT

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 8.1 hours before the alert went out and 320 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: 74 J/kg
Mixed-layer CIN: -325 J/kg
Mixed-layer LCL: 844 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: -211 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 11, 2:02 AM CDT	Mesoscale Discussion	SPC	Andrew, Atchison, Bates, Buchanan, Caldwell, Cass and 9 more	118 min
May 11, 3:10 AM CDT	Severe Thunderstorm Watch	SPC	Andrew, Atchison, Bates, Buchanan, Caldwell, Cass and 12 more	5 hr
May 11, 5:34 AM CDT	Mesoscale Discussion	SPC	Andrew, Atchison, Bates, Benton, Buchanan, Caldwell and 28 more	101 min
May 11, 11:20 AM CDT	Mesoscale Discussion	SPC	Lincoln, Montgomery, Pike, Ralls, Saint Charles, Saint Louis and 2 more	55 min
May 11, 12:10 PM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Cape Girardeau, Franklin, Jefferson, Lincoln, Perry and 8 more	12 hr
May 11, 2:19 PM CDT	Mesoscale Discussion	SPC	Franklin, Jefferson, Lincoln, Saint Charles, Saint Louis, City of Saint Louis	56 min
May 11, 6:30 PM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Cape Girardeau, Crawford, Franklin, Gasconade, Iron and 14 more	7 hr

Nearby

Mesoscale Discussions in Missouri, 2016 Every mesoscale discussion in 2016

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.