Alert archive / Kansas / Mesoscale Discussions in 2017

Mesoscale Discussion 501

April 15, 201712 counties in Kansas; 5 counties in Oklahoma; Lipscomb County, Ochiltree County, Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 15, 2017, 7:35 PM CDT for 12 counties in Kansas; 5 counties in Oklahoma; Lipscomb County, Ochiltree County, Texas. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Apr 15, 2017, 7:35 PM CDT (00:35 UTC)
Expired: Apr 15, 2017, 9:00 PM CDT
In force: 85 min
Issued by: the Storm Prediction Center

Counties Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ford County, KS, Gray County, KS, Hodgeman County, KS, Kiowa County, KS, Meade County, KS, Pawnee County, KS, Pratt County, KS, Stafford County, KS, Beaver County, OK, Ellis County, OK, Harper County, OK, Woods County, OK, Woodward County, OK, Lipscomb County, TX, Ochiltree County, TX

The radar

The Dodge City radar (KDDC), 51 km from the middle of the area, began a volume at 00:34 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, 0.6 hours before the alert went out and 49 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: 1292 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 2243 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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
Apr 15, 7:02 PM CDT	Severe Thunderstorm Watch	SPC	Barton, Ellsworth, Harvey, Kingman, Lincoln, McPherson and 5 more	5 hr
Apr 15, 7:22 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Dickinson, Doniphan, Geary, Jackson and 6 more	53 min
Apr 15, 9:20 PM CDT	Mesoscale Discussion	SPC	Anderson, Atchison, Barber, Barton, Butler, Chase and 40 more	85 min
Apr 16, 3:02 PM CDT	Mesoscale Discussion	SPC	Beckham, Ellis, Greer, Harmon, Jackson, Roger Mills	88 min
Apr 16, 3:37 PM CDT	Severe Thunderstorm Watch	SPC	Beckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more	8 hr
Apr 16, 3:54 PM CDT	Mesoscale Discussion	SPC	Carter, Cotton, Jefferson, Love, Marshall, Stephens	96 min
Apr 16, 1:46 PM CDT	Mesoscale Discussion	SPC	Brewster, Crane, Pecos	119 min
Apr 16, 6:19 PM CDT	Mesoscale Discussion	SPC	Andrews, Ector, Gaines, Terry, Winkler, Yoakum	2 hr

Nearby

Mesoscale Discussions in Kansas, 2017 Mesoscale Discussions in Oklahoma, 2017 Mesoscale Discussions in Texas, 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.