Alert archive / Kansas / Mesoscale Discussions in 2020

Mesoscale Discussion 1650

August 31, 202014 counties in Kansas; 13 counties in Missouri; Richardson County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 31, 2020, 4:56 AM CDT for 14 counties in Kansas; 13 counties in Missouri; Richardson County, Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Aug 31, 2020, 4:56 AM CDT (09:56 UTC)
Expired
Aug 31, 2020, 7:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch possible
Chance of a watch
40%
All 28 counties

Atchison County, KS, Brown County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Nemaha County, KS, Shawnee County, KS, Wyandotte County, KS, Andrew County, MO, Bates County, MO, Buchanan County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, DeKalb County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Platte County, MO, Ray County, MO, Richardson County, NE

The radar

The Pleasant Hill radar (KEAX), 89 km from the middle of the area, began a volume at 09:59 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

Omaha, NE (KOAX), launched 00:00Z, 9.9 hours before the alert went out and 247 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, Omaha, NE at 00:00Z on 2020-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 204 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, Omaha, NE at 00:00Z on 2020-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
204 J/kg
Mixed-layer CIN
-312 J/kg
Mixed-layer LCL
1578 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
174 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Aug 30, 11:42 PM CDTMesoscale DiscussionSPCCloud, Jewell, Lincoln, Mitchell, Osborne, Ottawa and 5 more2 hr
Aug 31, 4:18 AM CDTMesoscale DiscussionSPCCherokee, Crawford, Labette, Neosho117 min
Aug 31, 8:41 AM CDTSevere Thunderstorm WatchSPCBourbon, Crawford, Linn, Miami5 hr
Aug 31, 3:34 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Montgomery, Neosho86 min
Aug 31, 3:53 PM CDTSevere Thunderstorm WatchSPCChautauqua, Cherokee, Crawford, Labette, Montgomery, Neosho10 hr
Aug 31, 6:13 PM CDTMesoscale DiscussionSPCChautauqua, Cherokee, Labette, Montgomery92 min
Aug 31, 10:50 AM CDTSevere Thunderstorm WatchSPCCrawford, Franklin, Gasconade, Iron, Jefferson, Madison and 4 more3 hr
Aug 31, 11:04 AM CDTMesoscale DiscussionSPCBarton, Benton, Callaway, Camden, Cedar, Cole and 26 more86 min
Aug 31, 12:16 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot89 min
Aug 31, 12:43 PM CDTMesoscale DiscussionSPCBarry, Barton, Bollinger, Butler, Cape Girardeau, Carter and 36 more92 min
Aug 30, 8:00 PM CDTMesoscale DiscussionSPCAdams, Antelope, Blaine, Boone, Boyd, Buffalo and 18 more2 hr

Nearby

Mesoscale Discussions in Kansas, 2020Mesoscale Discussions in Missouri, 2020Mesoscale Discussions in Nebraska, 2020Every mesoscale discussion in 2020

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.