Alert archive / Missouri / Mesoscale Discussions in 2006

Mesoscale Discussion 960

May 24, 2006Adams County, Hancock County, Illinois; 17 counties in Iowa; 30 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 24, 2006, 11:27 AM CDT for Adams County, Hancock County, Illinois; 17 counties in Iowa; 30 counties in Missouri. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2006, 11:27 AM CDT (16:27 UTC)
Expired
May 24, 2006, 1:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 49 counties

Appanoose County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Iowa County, IA, Jefferson County, IA, Johnson County, IA, Keokuk County, IA, Lee County, IA, Louisa County, IA, Mahaska County, IA, Monroe County, IA, Poweshiek County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Wayne County, IA, Adams County, IL, Hancock County, IL, Adair County, MO, Audrain County, MO, Boone County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clark County, MO, Cooper County, MO, Daviess County, MO, Grundy County, MO, Howard County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Monroe 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, Sullivan County, MO

The radar

The Pleasant Hill radar (KEAX), 167 km from the middle of the area, began a volume at 16:26 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 watches that followed

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

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 4.5 hours before the alert went out and 253 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 2006-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1061 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 2006-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 335 square meters per square second.193958Sfc1 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
1061 J/kg
Mixed-layer CIN
-170 J/kg
Mixed-layer LCL
965 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
335 m²/s²
0-3 km storm-relative helicity
324 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.8

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 24, 12:25 PM CDTTornado WatchSPCAdams, Brown, Calhoun, Greene, Pike7 hr
May 24, 1:37 PM CDTMesoscale DiscussionSPCCarroll, Jo Daviess, Rock Island, Stephenson, Whiteside83 min
May 24, 2:23 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 37 more97 min
May 24, 2:46 PM CDTTornado WatchSPCBond, Boone, Bureau, Carroll, Cass, Champaign and 63 more7 hr
May 24, 4:26 PM CDTMesoscale DiscussionSPCChampaign, Christian, Clark, Clay, Coles, Cook and 24 more94 min
May 24, 4:42 PM CDTSevere Thunderstorm WatchSPCCook, DuPage, Iroquois, Kankakee, Will5 hr
May 24, 6:18 PM CDTSevere Thunderstorm WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 15 more7 hr
May 24, 6:24 PM CDTMesoscale DiscussionSPCMcHenry96 min
May 24, 6:54 PM CDTSevere Thunderstorm WatchSPCKane, Lake, McHenry4 hr
May 23, 7:57 PM CDTSevere Thunderstorm WatchSPCFremont, Harrison, Mills, Monona, Montgomery, Page and 2 more6 hr
May 23, 10:06 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 24 more114 min
May 24, 1:56 AM CDTMesoscale DiscussionSPCDecatur94 min
May 24, 2:20 PM CDTSevere Thunderstorm WatchSPCAllamakee, Clayton, Fayette, Winneshiek6 hr
May 24, 1:29 PM CDTMesoscale DiscussionSPCBarry, Barton, Benton, Camden, Carter, Cedar and 39 more2 hr
May 24, 5:45 PM CDTMesoscale DiscussionSPCBarry, Barton, Bollinger, Butler, Camden, Cape Girardeau and 36 more2 hr

Nearby

Mesoscale Discussions in Missouri, 2006Mesoscale Discussions in Iowa, 2006Mesoscale Discussions in Illinois, 2006Every mesoscale discussion in 2006

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.