Alert archive / Missouri / Mesoscale Discussions in 2014

Mesoscale Discussion 1787

October 1, 20149 counties in Kansas; 17 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Oct 1, 2014, 9:20 PM CDT for 9 counties in Kansas; 17 counties in Missouri. It was in force for 25 min.

The area

The outline as issued.

The facts

Issued
Oct 1, 2014, 9:20 PM CDT (02:20 UTC)
Expired
Oct 1, 2014, 9:45 PM CDT
In force
25 min
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 26 counties

Anderson County, KS, Douglas County, KS, Franklin County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Wyandotte County, KS, Bates County, MO, Benton County, MO, Carroll County, MO, Cass County, MO, Clay County, MO, Cooper County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Morgan County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, Saline County, MO, St. Clair County, MO

The radar

The Pleasant Hill radar (KEAX), 26 km from the middle of the area, began a volume at 02:23 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

Topeka, KS (KFOE), launched 00:00Z, 2.3 hours before the alert went out and 144 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, Topeka, KS at 00:00Z on 2014-10-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1756 joules per kilogram.LCLEL10008507005003002001001 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, Topeka, KS at 00:00Z on 2014-10-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.1939587897Sfc1 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
1756 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1105 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
1.4
Supercell composite
5.8

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.

IssuedProductOfficeCountiesLasted
Oct 1, 9:52 PM CDTSevere Thunderstorm WatchSPCBourbon, Linn, Miami6 hr
Oct 1, 9:59 PM CDTMesoscale DiscussionSPCDecatur, Ellis, Gove, Graham, Lane, Ness and 9 more2 hr
Oct 1, 11:55 PM CDTMesoscale DiscussionSPCDouglas, Franklin, Johnson, Leavenworth, Linn, Miami and 1 more95 min
Oct 1, 11:59 PM CDTSevere Thunderstorm WatchSPCJewell, Mitchell, Osborne, Phillips, Rooks, Smith5 hr
Oct 2, 2:33 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Cherokee, Crawford, Labette, Linn and 3 more117 min
Oct 2, 3:02 AM CDTMesoscale DiscussionSPCClay, Cloud, Jewell, Mitchell, Ottawa, Republic and 1 more118 min
Oct 2, 6:59 AM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Dickinson, Doniphan, Geary and 10 more61 min
Oct 2, 8:00 AM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Brown, Butler, Chase, Chautauqua and 34 more7 hr
Oct 2, 12:20 PM CDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford8 hr
Oct 2, 3:16 PM CDTMesoscale DiscussionSPCCherokee59 min
Oct 2, 11:59 AM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 17 more91 min
Oct 2, 1:22 PM CDTSevere Thunderstorm WatchSPCBollinger, Cape Girardeau, Carter, Crawford, Franklin, Gasconade and 13 more10 hr
Oct 2, 3:14 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Franklin, Iron, Jefferson, Madison and 7 more91 min
Oct 2, 5:25 PM CDTMesoscale DiscussionSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Ripley and 2 more95 min
Oct 2, 5:48 PM CDTTornado WatchSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Ripley and 2 more8 hr
Oct 2, 6:00 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Crawford, Franklin, Iron, Jefferson and 8 more90 min

Nearby

Mesoscale Discussions in Missouri, 2014Mesoscale Discussions in Kansas, 2014Every mesoscale discussion in 2014

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.