Alert archive / Missouri / Mesoscale Discussions in 2009

Mesoscale Discussion 985

June 8, 20095 states

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2009, 3:25 AM CDT for 5 states. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Jun 8, 2009, 3:25 AM CDT (08:25 UTC)
Expired
Jun 8, 2009, 4:30 AM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 74 counties

Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Van Buren County, IA, Adams County, IL, Brown County, IL, Hancock County, IL, Henderson County, IL, McDonough County, IL, Mercer County, IL, Schuyler County, IL, Warren County, IL, Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Linn County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Adair County, MO, Audrain County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Boone County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Chariton County, MO, Clark County, MO, Clay County, MO, Cooper County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Morgan County, MO, Pettis County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, St. Clair County, MO, Sullivan County, MO, Vernon County, MO, Nowata County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Washington County, OK

The radar

The Pleasant Hill radar (KEAX), 78 km from the middle of the area, began a volume at 08:26 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 00:00Z, 8.4 hours before the alert went out and 194 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 00:00Z on 2009-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3425 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 00:00Z on 2009-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 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
3425 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
1586 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.2

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.

IssuedProductOfficeCountiesLasted
Jun 7, 11:09 PM CDTSevere Thunderstorm WatchSPCAdams, Brown, Hancock, Henderson, McDonough, Mercer and 1 more6 hr
Jun 8, 8:49 AM CDTMesoscale DiscussionSPCBond, Clark, Clay, Clinton, Coles, Crawford and 26 more86 min
Jun 8, 11:54 AM CDTMesoscale DiscussionSPCBond, Boone, Brown, Bureau, Calhoun, Cass and 43 more96 min
Jun 8, 1:23 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Cook, DeKalb, DuPage, Grundy and 10 more6 hr
Jun 8, 3:20 PM CDTMesoscale DiscussionSPCBond, Clinton, Franklin, Jackson, Jefferson, Jersey and 9 more85 min
Jun 8, 3:53 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Grundy, Iroquois and 11 more67 min
Jun 8, 4:33 PM CDTSevere Thunderstorm WatchSPCAlexander, Bond, Champaign, Christian, Clark, Clay and 37 more5 hr
Jun 8, 5:46 PM CDTMesoscale DiscussionSPCLake59 min
Jun 7, 8:49 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Buchanan, Cedar, Davis, Henry and 18 more56 min
Jun 7, 10:22 PM CDTMesoscale DiscussionSPCAdair, Adams, Cass, Dallas, Fremont, Madison and 7 more53 min
Jun 7, 10:53 PM CDTTornado WatchSPCAdair, Adams, Cass, Clarke, Dallas, Decatur and 15 more5 hr
Jun 8, 2:30 AM CDTMesoscale DiscussionSPCAdair, Adams, Appanoose, Cass, Clarke, Dallas and 22 more60 min
Jun 7, 7:08 PM CDTMesoscale DiscussionSPCAnderson, Barber, Butler, Chase, Coffey, Greenwood and 7 more67 min
Jun 7, 8:13 PM CDTMesoscale DiscussionSPCGraham, Jewell, Mitchell, Norton, Osborne, Phillips and 3 more62 min
Jun 7, 11:31 PM CDTSevere Thunderstorm WatchSPCAllen, Bourbon, Butler, Chase, Chautauqua, Cherokee and 14 more5 hr
Jun 8, 12:34 AM CDTSevere Thunderstorm WatchSPCJewell, Mitchell, Osborne, Phillips, Rooks, Smith1 min
Jun 8, 3:18 PM CDTMesoscale DiscussionSPCCarter, Cotton, Jefferson, Stephens, Tillman57 min
Jun 8, 3:45 PM CDTSevere Thunderstorm WatchSPCComanche, Cotton, Jackson, Jefferson, Stephens, Tillman7 hr

Nearby

Mesoscale Discussions in Missouri, 2009Mesoscale Discussions in Kansas, 2009Mesoscale Discussions in Illinois, 2009Every mesoscale discussion in 2009

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.