Alert archive / Illinois / Mesoscale Discussions in 2004

Mesoscale Discussion 999

May 30, 200435 counties in Illinois; 7 counties in Iowa; 11 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at May 30, 2004, 3:16 PM CDT for 35 counties in Illinois; 7 counties in Iowa; 11 counties in Wisconsin. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
May 30, 2004, 3:16 PM CDT (20:16 UTC)
Expired
May 30, 2004, 5:15 PM CDT
In force
119 min
Issued by
the Storm Prediction Center
All 53 counties

Clinton County, IA, Des Moines County, IA, Dubuque County, IA, Jackson County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, Cass County, IL, DeKalb County, IL, DuPage County, IL, Fulton County, IL, Grundy County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, Kane County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Lee County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McHenry County, IL, Menard County, IL, Mercer County, IL, Ogle County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Schuyler County, IL, Stark County, IL, Stephenson County, IL, Tazewell County, IL, Warren County, IL, Whiteside County, IL, Winnebago County, IL, Woodford County, IL, Columbia County, WI, Dane County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Jefferson County, WI, Lafayette County, WI, Rock County, WI, Sauk County, WI, Walworth County, WI, Waukesha County, WI

The radar

The Quad Cities radar (KDVN), 63 km from the middle of the area, began a volume at 20:17 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 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 30, 7:40 AM CDTTornado WatchSPCAdams, Brown, Cass, Champaign, Christian, Coles and 31 more5 hr
May 30, 9:40 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Greene, Hancock and 6 more3 hr
May 30, 10:04 AM CDTMesoscale DiscussionSPCAlexander, Clay, Clinton, Edwards, Franklin, Gallatin and 19 more2 hr
May 30, 10:50 AM CDTTornado WatchSPCAdams, Brown, Hancock, McDonough, Pike8 hr
May 30, 11:04 AM CDTMesoscale DiscussionSPCChampaign, Cook, DeWitt, Douglas, DuPage, Iroquois and 4 more116 min
May 30, 11:50 AM CDTTornado WatchSPCClark, Crawford, Edgar, Edwards, Gallatin, Hardin and 7 more7 hr
May 30, 12:13 PM CDTMesoscale DiscussionSPCCarroll, Hancock, Henderson, Henry, Jo Daviess, Knox and 4 more2 hr
May 30, 12:25 PM CDTTornado WatchSPCBureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 8 more7 hr
May 30, 12:53 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Christian, Fulton and 13 more2 hr
May 30, 1:05 PM CDTTornado WatchSPCAlexander, Bond, Calhoun, Cass, Champaign, Christian and 45 more6 hr
May 30, 4:25 PM CDTTornado WatchSPCBoone, Cook, DeKalb, DuPage, Grundy, Iroquois and 12 more6 hr
May 30, 5:10 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clinton, Fayette, Jackson, Madison and 7 more95 min
May 30, 5:36 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cass, Champaign, Christian and 39 more54 min
May 30, 6:40 PM CDTTornado WatchSPCAlexander, Bond, Champaign, Christian, Clark, Clay and 41 more6 hr
May 30, 6:55 PM CDTTornado WatchSPCGallatin, Hardin, Lawrence, Wabash8 hr
May 29, 8:45 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 15 more60 min
May 29, 9:21 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 13 more54 min
May 29, 9:35 PM CDTTornado WatchSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 26 more6 hr
May 29, 11:23 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Carroll, Cass, Crawford and 13 more67 min
May 30, 2:38 AM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jasper, Keokuk and 13 more97 min
May 30, 2:45 PM CDTMesoscale DiscussionSPCBuffalo, Dunn, La Crosse, Pepin, Pierce, Saint Croix and 2 more2 hr

Nearby

Mesoscale Discussions in Illinois, 2004Mesoscale Discussions in Wisconsin, 2004Mesoscale Discussions in Iowa, 2004Every mesoscale discussion in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.