Alert archive / Kansas / Mesoscale Discussions in 2017

Mesoscale Discussion 762

May 18, 20179 counties in Colorado; 14 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at May 18, 2017, 2:42 PM MDT for 9 counties in Colorado; 14 counties in Kansas. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: May 18, 2017, 2:42 PM MDT (20:42 UTC)
Expired: May 18, 2017, 4:15 PM MDT
In force: 93 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 23 counties

Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Otero County, CO, Prowers County, CO, Gove County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Logan County, KS, Morton County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Stanton County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS

The radar

The Goodland radar (KGLD), 105 km from the middle of the area, began a volume at 20:46 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, 8.7 hours before the alert went out and 212 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: 2030 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 356 m²/s²
0-3 km storm-relative helicity: 380 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
May 18, 1:00 PM MDT	Mesoscale Discussion	SPC	Barber, Barton, Butler, Chase, Chautauqua, Clark and 20 more	90 min
May 18, 1:16 PM MDT	Mesoscale Discussion	SPC	Anderson, Chase, Coffey, Douglas, Franklin, Johnson and 7 more	119 min
May 18, 2:00 PM MDT	Tornado Watch	SPC	Anderson, Atchison, Brown, Clay, Cloud, Coffey and 24 more	7 hr
May 18, 2:21 PM MDT	Tornado Watch PDS	SPC	Barber, Barton, Butler, Chase, Chautauqua, Clark and 31 more	7 hr
May 18, 4:15 PM MDT	Mesoscale Discussion	SPC	Harper, Sumner	60 min

Nearby

Mesoscale Discussions in Kansas, 2017 Mesoscale Discussions in Colorado, 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.