Alert archive / Missouri / Mesoscale Discussions in 2018

Mesoscale Discussion 1672

November 30, 201811 counties in Kansas; 12 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Nov 30, 2018, 9:12 PM CST for 11 counties in Kansas; 12 counties in Missouri. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Nov 30, 2018, 9:12 PM CST (03:12 UTC)
Expired
Nov 30, 2018, 11:15 PM CST
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 23 counties

Allen County, KS, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Elk County, KS, Greenwood County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Christian County, MO, Dade County, MO, Douglas County, MO, Greene County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Taney County, MO

The radar

The Springfield radar (KSGF), 109 km from the middle of the area, began a volume at 03:11 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.2 hours before the alert went out and 81 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 00:00Z on 2018-12-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 202 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 00:00Z on 2018-12-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 241 square meters per square second.19395878Sfc1 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
202 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
687 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
241 m²/s²
0-3 km storm-relative helicity
266 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

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
Nov 30, 9:47 PM CSTTornado WatchSPCAllen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 3 more5 hr
Nov 30, 11:20 PM CSTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Neosho85 min
Dec 1, 12:58 AM CSTMesoscale DiscussionSPCCarter, Christian, Douglas, Greene, Howell, Oregon and 9 more2 hr
Dec 1, 3:25 AM CSTMesoscale DiscussionSPCDunklin, Pemiscot2 hr
Dec 1, 1:48 PM CSTMesoscale DiscussionSPCPike, Saint Louis, City of Saint Louis117 min
Dec 1, 2:16 PM CSTTornado WatchSPCLincoln, Pike7 hr

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.