Alert archive / Missouri / Mesoscale Discussions in 2018

Mesoscale Discussion 1552

October 9, 20188 counties in Kansas; 27 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Oct 9, 2018, 3:06 PM CDT for 8 counties in Kansas; 27 counties in Missouri. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
Oct 9, 2018, 3:06 PM CDT (20:06 UTC)
Expired
Oct 9, 2018, 4:30 PM CDT
In force
84 min
Issued by
the Storm Prediction Center
All 35 counties

Douglas County, KS, Franklin County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Andrew County, MO, Barton County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Clinton County, MO, Dade County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Jackson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Mercer County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, St. Clair County, MO, Sullivan County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 47 km from the middle of the area, began a volume at 20:06 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 12:00Z, 8.1 hours before the alert went out and 256 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2018-10-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 372 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2018-10-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
372 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
747 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.2

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.

IssuedProductOfficeCountiesLasted
Oct 9, 9:09 AM CDTMesoscale DiscussionSPCChautauqua, Cherokee, Cowley, Elk, Labette, Montgomery2 hr
Oct 9, 11:31 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 18 more89 min
Oct 9, 12:17 PM CDTTornado WatchSPCAllen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 3 more8 hr
Oct 9, 1:46 PM CDTTornado WatchSPCAnderson, Atchison, Doniphan, Douglas, Franklin, Jefferson and 5 more7 hr
Oct 8, 7:03 PM CDTMesoscale DiscussionSPCAndrew, Buchanan, Caldwell, Clinton, Daviess, DeKalb and 7 more57 min
Oct 9, 12:59 PM CDTMesoscale DiscussionSPCAdair, Clark, Grundy, Knox, Mercer, Putnam and 3 more3 hr
Oct 9, 6:22 PM CDTMesoscale DiscussionSPCOzark, Taney83 min

Nearby

Mesoscale Discussions in Missouri, 2018Mesoscale Discussions in Kansas, 2018Every mesoscale discussion in 2018

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.