Alert archive / Missouri / Mesoscale Discussions in 2013

Mesoscale Discussion 842

May 28, 20135 states

The Storm Prediction Center issued this mesoscale discussion at May 28, 2013, 5:52 PM CDT for 5 states. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
May 28, 2013, 5:52 PM CDT (22:52 UTC)
Expired
May 28, 2013, 7:15 PM CDT
In force
83 min
Issued by
the Storm Prediction Center
All 68 counties

Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Lucas County, IA, Monroe County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Wayne County, IA, Adams County, IL, Hancock County, IL, Henderson County, IL, McDonough County, IL, Atchison County, KS, Brown County, KS, Clay County, KS, Dickinson County, KS, Doniphan County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Leavenworth County, KS, Marshall County, KS, Morris County, KS, Nemaha County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Washington County, KS, Adair County, MO, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clark County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Knox County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Worth County, MO, Nemaha County, NE, Pawnee County, NE, Richardson County, NE

The radar

The Pleasant Hill radar (KEAX), 137 km from the middle of the area, began a volume at 22:52 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

Topeka, KS (KTOP), launched 12:00Z, 10.9 hours before the alert went out and 173 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-pSkew-T log-p diagram, Topeka, KS at 12:00Z on 2013-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2346 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 12:00Z on 2013-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 334 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2346 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
645 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
334 m²/s²
0-3 km storm-relative helicity
385 m²/s²
Significant tornado parameter
3.4
Supercell composite
25.4

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.

IssuedProductOfficeCountiesLasted
May 28, 3:30 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Fulton, Greene and 11 more90 min
May 27, 9:07 PM CDTMesoscale DiscussionSPCFremont, Page, Ringgold, Taylor53 min
May 27, 9:31 PM CDTSevere Thunderstorm WatchSPCDecatur, Fremont, Page, Ringgold, Taylor7 hr
May 28, 1:37 PM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Benton, Cass, Cedar and 39 more113 min
May 28, 2:23 PM CDTTornado WatchSPCAppanoose, Clarke, Davis, Decatur, Des Moines, Fremont and 20 more8 hr
May 27, 8:18 PM CDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Ellsworth, Geary, Jewell and 10 more117 min
May 27, 10:23 PM CDTMesoscale DiscussionSPCBrown, Marshall, Nemaha, Pottawatomie, Riley, Washington67 min
May 27, 11:19 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Jefferson, Leavenworth and 3 more116 min
May 28, 2:28 PM CDTMesoscale DiscussionSPCBarber, Clark, Comanche, Kiowa, Pratt62 min
May 28, 2:55 PM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Ford, Kiowa and 5 more9 hr
May 28, 3:08 PM CDTMesoscale DiscussionSPCCheyenne, Greeley, Logan, Rawlins, Sheridan, Sherman and 2 more2 hr
May 28, 3:51 PM CDTSevere Thunderstorm WatchSPCCheyenne9 hr
May 28, 6:05 PM CDTMesoscale DiscussionSPCCheyenne, Sherman115 min
May 27, 8:39 PM CDTMesoscale DiscussionSPCBlaine, Brown, Custer, Dawson, Frontier, Lincoln and 3 more96 min

Nearby

Mesoscale Discussions in Missouri, 2013Mesoscale Discussions in Iowa, 2013Mesoscale Discussions in Kansas, 2013Every 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.