Alert archive / Kansas / Mesoscale Discussions in 2018

Mesoscale Discussion 1206

July 30, 201813 counties in Kansas; 10 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jul 30, 2018, 12:17 PM CDT for 13 counties in Kansas; 10 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 30, 2018, 12:17 PM CDT (17:17 UTC)
Expired: Jul 30, 2018, 2:45 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 23 counties

Barber County, KS, Butler County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Pratt County, KS, Reno County, KS, Sedgwick County, KS, Sumner County, KS, Alfalfa County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Major County, OK, Noble County, OK, Osage County, OK, Pawnee County, OK, Washington County, OK, Woods County, OK

The radar

The Wichita radar (KICT), 53 km from the middle of the area, began a volume at 17:20 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

Norman, OK (KOUN), launched 12:00Z, 5.3 hours before the alert went out and 223 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1525 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 89 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.

Issued	Product	Office	Counties	Lasted
Jul 29, 7:18 PM CDT	Mesoscale Discussion	SPC	Clark, Edwards, Finney, Ford, Grant, Gray and 11 more	87 min
Jul 29, 8:03 PM CDT	Severe Thunderstorm Watch	SPC	Clark, Comanche, Finney, Ford, Grant, Gray and 9 more	6 hr
Jul 29, 11:49 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Finney, Ford, Grant and 12 more	56 min
Jul 29, 9:44 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 17 more	61 min
Jul 29, 10:04 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 26 more	7 hr
Jul 30, 2:01 AM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Caddo, Carter, Choctaw, Cleveland and 22 more	59 min
Jul 30, 3:49 AM CDT	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Carter, Choctaw, Coal, Cotton and 9 more	5 hr
Jul 30, 6:27 AM CDT	Mesoscale Discussion	SPC	Atoka, Bryan, Choctaw, Pushmataha	93 min
Jul 30, 3:47 PM CDT	Mesoscale Discussion	SPC	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 14 more	2 hr

Nearby

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