Alert archive / Illinois / Mesoscale Discussions in 2006

Mesoscale Discussion 501

April 14, 200651 counties in Illinois; 14 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at Apr 14, 2006, 4:48 PM CDT for 51 counties in Illinois; 14 counties in Indiana. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Apr 14, 2006, 4:48 PM CDT (21:48 UTC)
Expired
Apr 14, 2006, 6:15 PM CDT
In force
87 min
Issued by
the Storm Prediction Center
All 65 counties

Brown County, IL, Bureau County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Coles County, IL, Cook County, IL, Cumberland County, IL, DeKalb County, IL, DeWitt County, IL, Douglas County, IL, DuPage County, IL, Edgar County, IL, Ford County, IL, Fulton County, IL, Greene County, IL, Grundy County, IL, Henry County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Warren County, IL, Will County, IL, Woodford County, IL, Benton County, IN, Fountain County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Starke County, IN, Tippecanoe County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, White County, IN

The radar

The Lincoln radar (KILX), 60 km from the middle of the area, began a volume at 21:48 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

Lincoln, IL (KILX), launched 12:00Z, 9.8 hours before the alert went out and 86 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, Lincoln, IL at 12:00Z on 2006-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1011 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, Lincoln, IL at 12:00Z on 2006-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 254 square meters per square second.1939587897Sfc1 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
1011 J/kg
Mixed-layer CIN
-195 J/kg
Mixed-layer LCL
1797 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
254 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Apr 13, 7:58 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, DuPage, Ford and 26 more92 min
Apr 13, 8:24 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 26 more7 hr
Apr 13, 10:31 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Champaign, Cook, DeKalb and 38 more59 min
Apr 13, 11:30 PM CDTSevere Thunderstorm WatchSPCChampaign, Christian, Clark, Coles, Cumberland, DeWitt and 12 more2 hr
Apr 14, 1:34 AM CDTMesoscale DiscussionSPCBoone, Bureau, Champaign, Christian, Clark, Clay and 39 more86 min
Apr 14, 1:58 AM CDTTornado WatchSPCChampaign, Clark, Clay, Coles, Crawford, Cumberland and 21 more4 hr
Apr 14, 7:20 AM CDTMesoscale DiscussionSPCCass, Fulton, Hancock, Henderson, Knox, McDonough and 5 more115 min
Apr 14, 9:15 AM CDTSevere Thunderstorm WatchSPCCass, Champaign, Christian, Clark, Coles, Crawford and 29 more6 hr
Apr 14, 10:05 AM CDTMesoscale DiscussionSPCBrown, Cass, Champaign, Christian, Clark, Coles and 20 more85 min
Apr 14, 5:19 PM CDTTornado WatchSPCBoone, Bureau, Carroll, Cass, Champaign, Christian and 57 more4 hr
Apr 14, 6:57 PM CDTMesoscale DiscussionSPCCass, Champaign, Coles, DeWitt, Douglas, Edgar and 24 more93 min
Apr 13, 11:00 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 49 more5 hr
Apr 14, 3:14 AM CDTMesoscale DiscussionSPCClark, Crawford, Floyd, Harrison, Jefferson, Ohio and 3 more91 min
Apr 14, 1:46 PM CDTMesoscale DiscussionSPCAdams, Allen, Benton, Blackford, Boone, Carroll and 32 more89 min
Apr 14, 2:03 PM CDTSevere Thunderstorm WatchSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 41 more9 hr
Apr 14, 4:54 PM CDTMesoscale DiscussionSPCAdams, Allen, Bartholomew, Blackford, Boone, Brown and 51 more66 min
Apr 14, 6:09 PM CDTTornado WatchSPCBartholomew, Boone, Brown, Carroll, Clay, Clinton and 30 more6 hr
Apr 14, 6:58 PM CDTTornado WatchSPCDearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more6 hr

Nearby

Mesoscale Discussions in Illinois, 2006Mesoscale Discussions in Indiana, 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.