Alert archive / Kansas / Mesoscale Discussions in 2018

Mesoscale Discussion 562

May 28, 201811 counties in Kansas; Beaver County, Ellis County, Harper County, Oklahoma; 11 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 28, 2018, 9:08 PM CDT for 11 counties in Kansas; Beaver County, Ellis County, Harper County, Oklahoma; 11 counties in Texas. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: May 28, 2018, 9:08 PM CDT (02:08 UTC)
Expired: May 28, 2018, 10:15 PM CDT
In force: 67 min
Issued by: the Storm Prediction Center

All 25 counties

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, Seward County, KS, Stafford County, KS, Beaver County, OK, Ellis County, OK, Harper County, OK, Armstrong County, TX, Carson County, TX, Gray County, TX, Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Ochiltree County, TX, Randall County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 125 km from the middle of the area, began a volume at 02:09 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.1 hours before the alert went out and 124 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: 1200 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 2800 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

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 28, 9:06 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Ellis, Graham, Norton, Osborne and 7 more	84 min
May 29, 1:55 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Edwards, Ford, Harper and 9 more	65 min
May 29, 2:01 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Geary, Jackson, Jefferson, Lyon and 7 more	89 min
May 29, 2:19 PM CDT	Tornado Watch	SPC	Barber, Clark, Comanche, Harper, Kingman, Sedgwick and 1 more	8 hr
May 29, 2:40 PM CDT	Severe Thunderstorm Watch	SPC	Barton, Brown, Chase, Clay, Cloud, Dickinson and 33 more	7 hr
May 29, 3:10 PM CDT	Mesoscale Discussion	SPC	Cheyenne	95 min
May 29, 5:04 PM CDT	Mesoscale Discussion	SPC	Barton, Brown, Chase, Clay, Cloud, Dickinson and 26 more	116 min
May 29, 5:56 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Harper, Kingman, Meade and 2 more	2 hr

Nearby

Mesoscale Discussions in Kansas, 2018 Mesoscale Discussions in Texas, 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.