Alert archive / Kansas / Mesoscale Discussions in 2020

Mesoscale Discussion 949

June 20, 20204 counties in Kansas; Harper County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2020, 11:13 PM CDT for 4 counties in Kansas; Harper County, Oklahoma. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: Jun 20, 2020, 11:13 PM CDT (04:13 UTC)
Expired: Jun 21, 2020, 12:45 AM CDT
In force: 92 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

Counties Clark County, KS, Comanche County, KS, Ford County, KS, Kiowa County, KS, Harper County, OK

The radar

The Dodge City radar (KDDC), 57 km from the middle of the area, began a volume at 04:12 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

Dodge City, (KDDC), launched 00:00Z, 4.2 hours before the alert went out and 55 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1215 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 2145 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
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.

Issued	Product	Office	Counties	Lasted
Jun 21, 1:15 PM CDT	Mesoscale Discussion	SPC	Barton, Clark, Decatur, Edwards, Ellis, Ellsworth and 35 more	2 hr
Jun 21, 2:03 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 43 more	7 hr
Jun 21, 4:51 PM CDT	Mesoscale Discussion	SPC	Clark, Ford, Gray, Kiowa, Meade	114 min
Jun 21, 1:01 AM CDT	Mesoscale Discussion	SPC	Carter, Cotton, Jefferson, Love, Marshall, Stephens and 1 more	119 min
Jun 21, 1:21 AM CDT	Severe Thunderstorm Watch	SPC	Bryan, Carter, Cotton, Jefferson, Johnston, Love and 3 more	6 hr
Jun 21, 6:56 AM CDT	Mesoscale Discussion	SPC	Bryan, Choctaw	2 hr
Jun 21, 3:04 PM CDT	Mesoscale Discussion	SPC	Beaver, Beckham, Dewey, Ellis, Harmon, Harper and 4 more	116 min
Jun 21, 5:50 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 40 more	9 hr

Nearby

Mesoscale Discussions in Kansas, 2020 Mesoscale Discussions in Oklahoma, 2020 Every 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.