Alert archive / Kansas / Mesoscale Discussions in 2013

Mesoscale Discussion 832

May 27, 20134 states

The Storm Prediction Center issued this mesoscale discussion at May 27, 2013, 9:07 PM CDT for 4 states. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: May 27, 2013, 9:07 PM CDT (02:07 UTC)
Expired: May 27, 2013, 10:00 PM CDT
In force: 53 min
Issued by: the Storm Prediction Center

All 69 counties

Fremont County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Marshall County, KS, Miami County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Saline County, KS, Shawnee County, KS, Wabaunsee County, KS, Washington County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Saline County, MO, Worth County, MO, Cass County, NE, Fillmore County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Thayer County, NE

The radar

The Topeka radar (KTWX), 86 km from the middle of the area, began a volume at 02:08 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 232May 27, 9:30 PM CDT

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.1 hours before the alert went out and 77 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: 2862 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 975 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 6.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 9:31 PM CDT	Severe Thunderstorm Watch	SPC	Decatur, Fremont, Page, Ringgold, Taylor	7 hr
May 28, 3:30 AM CDT	Mesoscale Discussion	SPC	Lee, Van Buren	90 min
May 28, 1:37 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Benton, Cass, Cedar and 39 more	113 min
May 28, 2:23 PM CDT	Tornado Watch	SPC	Appanoose, Clarke, Davis, Decatur, Des Moines, Fremont and 20 more	8 hr
May 28, 5:52 PM CDT	Mesoscale Discussion	SPC	Appanoose, Clarke, Davis, Decatur, Des Moines, Henry and 11 more	83 min
May 27, 8:18 PM CDT	Mesoscale Discussion	SPC	Clay, Cloud, Dickinson, Ellsworth, Geary, Jewell and 10 more	117 min
May 27, 10:23 PM CDT	Mesoscale Discussion	SPC	Brown, Marshall, Nemaha, Pottawatomie, Riley, Washington	67 min
May 27, 11:19 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jackson, Jefferson, Leavenworth and 3 more	116 min
May 28, 2:28 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Kiowa, Pratt	62 min
May 28, 2:55 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Clark, Comanche, Edwards, Ford, Kiowa and 5 more	9 hr
May 28, 3:08 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Greeley, Logan, Rawlins, Sheridan, Sherman and 2 more	2 hr
May 28, 3:51 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne	9 hr
May 28, 6:05 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Sherman	115 min
May 27, 8:39 PM CDT	Mesoscale Discussion	SPC	Blaine, Brown, Custer, Dawson, Frontier, Lincoln and 3 more	96 min

Nearby

Mesoscale Discussions in Kansas, 2013 Mesoscale Discussions in Missouri, 2013 Mesoscale Discussions in Nebraska, 2013 Every mesoscale discussion in 2013

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.