Alert archive / Kansas / Mesoscale Discussions in 2017

Mesoscale Discussion 789

May 19, 201716 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at May 19, 2017, 6:45 PM CDT for 16 counties in Kansas. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: May 19, 2017, 6:45 PM CDT (23:45 UTC)
Expired: May 19, 2017, 7:45 PM CDT
In force: 60 min
Issued by: the Storm Prediction Center

Counties Butler County, KS, Chase County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Reno County, KS, Rice County, KS, Sedgwick County, KS, Sumner County, KS

The radar

The Wichita radar (KICT), 23 km from the middle of the area, began a volume at 23:45 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 12:00Z, 11.8 hours before the alert went out and 207 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: 593 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 547 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.2

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
May 18, 7:06 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Chase, Clay, Coffey, Dickinson and 23 more	84 min
May 18, 9:41 PM CDT	Mesoscale Discussion	SPC	Bourbon, Cherokee, Crawford, Johnson, Linn, Miami	94 min
May 18, 9:41 PM CDT	Severe Thunderstorm Watch	SPC	Atchison, Doniphan, Johnson, Leavenworth, Linn, Miami and 1 more	4 hr
May 19, 3:28 PM CDT	Mesoscale Discussion	SPC	Butler, Chase, Chautauqua, Cowley, Elk, Greenwood and 4 more	92 min
May 19, 4:47 PM CDT	Tornado Watch	SPC	Butler, Chase, Chautauqua, Cowley, Elk, Greenwood and 9 more	4 hr

Nearby

Mesoscale Discussions in Kansas, 2017 Every mesoscale discussion in 2017

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.