Alert archive / Missouri / Mesoscale Discussions in 2018

Mesoscale Discussion 459

May 19, 201816 counties in Kansas; 28 counties in Missouri; 5 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 19, 2018, 7:50 AM CDT for 16 counties in Kansas; 28 counties in Missouri; 5 counties in Oklahoma. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued
May 19, 2018, 7:50 AM CDT (12:50 UTC)
Expired
May 19, 2018, 9:45 AM CDT
In force
115 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 49 counties

Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Elk County, KS, Greenwood County, KS, Labette County, KS, Linn County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Cole County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Newton County, MO, Pettis County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Vernon County, MO, Webster County, MO, Craig County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Washington County, OK

The radar

The Springfield radar (KSGF), 94 km from the middle of the area, began a volume at 12:54 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, 0.8 hours before the alert went out and 92 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 2018-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1840 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 2018-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
1840 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1017 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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
May 18, 8:39 PM CDTSevere Thunderstorm WatchSPCBarton, Butler, Cowley, Ellsworth, Harper, Harvey and 16 more5 hr
May 18, 9:08 PM CDTMesoscale DiscussionSPCBarber, Cheyenne, Clark, Comanche, Decatur, Edwards and 33 more67 min
May 18, 11:14 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Cheyenne, Clark, Comanche and 50 more46 min
May 19, 12:39 PM CDTMesoscale DiscussionSPCChautauqua, Cowley, Elk, Harper, Montgomery, Sumner and 1 more3 hr
May 19, 1:42 PM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Dickinson, Doniphan and 17 more3 hr
May 19, 2:30 PM CDTSevere Thunderstorm WatchSPCAllen, Bourbon, Butler, Chase, Chautauqua, Cherokee and 15 more11 hr
May 19, 4:21 PM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Coffey, Douglas, Franklin, Geary and 12 more3 hr
May 19, 6:11 PM CDTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Labette and 3 more2 hr
May 19, 11:56 AM CDTMesoscale DiscussionSPCButler, Carter, Dent, Douglas, Howell, Laclede and 12 more2 hr
May 19, 1:36 PM CDTSevere Thunderstorm WatchSPCButler, Carter, Dent, Douglas, Dunklin, Howell and 12 more6 hr
May 19, 3:35 PM CDTMesoscale DiscussionSPCButler, Carter, Dunklin, Mississippi, New Madrid, Oregon and 5 more85 min
May 19, 6:14 PM CDTMesoscale DiscussionSPCDunklin, Mississippi, New Madrid, Pemiscot, Scott61 min
May 18, 9:40 PM CDTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 11 more65 min
May 19, 1:05 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Comanche, Custer and 6 more2 hr
May 19, 6:50 PM CDTMesoscale DiscussionSPCCimarron, Texas2 hr

Nearby

Mesoscale Discussions in Missouri, 2018Mesoscale Discussions in Kansas, 2018Mesoscale Discussions in Oklahoma, 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.