Alert archive / Illinois / Tornado Watches in 2005

Tornado Watch 397

June 4, 20055 states

The Storm Prediction Center issued this tornado watch at Jun 4, 2005, 8:15 PM CDT for 5 states. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Jun 4, 2005, 8:15 PM CDT (01:15 UTC)
Expired: Jun 5, 2005, 4:00 AM CDT
In force: 8 hr
Issued by: the Storm Prediction Center

All 96 counties

Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Cedar County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Davis County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Fayette County, IA, Henry County, IA, Howard County, IA, Iowa County, IA, Jackson County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Winneshiek County, IA, Adams County, IL, Brown County, IL, Bureau County, IL, Calhoun County, IL, Carroll County, IL, Cass County, IL, Christian County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jersey County, IL, Jo Daviess County, IL, Knox County, IL, Lee County, IL, Logan County, IL, Macoupin County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, Menard County, IL, Mercer County, IL, Montgomery County, IL, Morgan County, IL, Ogle County, IL, Peoria County, IL, Pike County, IL, Putnam County, IL, Rock Island County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Stark County, IL, Stephenson County, IL, Tazewell County, IL, Warren County, IL, Whiteside County, IL, Winnebago County, IL, Woodford County, IL, Fillmore County, MN, Houston County, MN, Audrain County, MO, Clark County, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Scotland County, MO, Shelby County, MO, Columbia County, WI, Crawford County, WI, Dane County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Lafayette County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Vernon County, WI

The radar

The Quad Cities radar (KDVN), 29 km from the middle of the area, began a volume at 01:18 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.

Warnings issued inside it

34 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 4, 8:30 PM CDT	Severe Thunderstorm Warning	DMX	Poweshiek	48 min
Jun 4, 8:50 PM CDT	Severe Thunderstorm Warning	LSX	Shelby	22 min
Jun 4, 8:53 PM CDT	Severe Thunderstorm Warning	DVN	Benton	67 min
Jun 4, 9:02 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis	43 min
Jun 4, 9:10 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	35 min
Jun 4, 9:12 PM CDT	Severe Thunderstorm Warning	DMX	Tama	48 min
Jun 4, 9:29 PM CDT	Tornado Warning	DVN	Jefferson, Van Buren	46 min
Jun 4, 9:38 PM CDT	Severe Thunderstorm Warning	DMX	Poweshiek	57 min
Jun 4, 9:45 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Keokuk	60 min
Jun 4, 9:47 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	19 min
Jun 4, 9:58 PM CDT	Severe Thunderstorm Warning	DMX	Tama	50 min
Jun 4, 10:03 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Linn	57 min
Jun 4, 10:03 PM CDT	Severe Thunderstorm Warning	DVN	Clark	41 min
Jun 4, 10:13 PM CDT	Tornado Warning	DVN	Iowa, Jefferson, Johnson, Keokuk, Washington	47 min
Jun 4, 10:21 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware	56 min
Jun 4, 10:32 PM CDT	Flash Flood Warning	DVN	Benton	8 hr
Jun 4, 10:36 PM CDT	Severe Thunderstorm Warning	DVN	Carroll	62 min
Jun 4, 10:36 PM CDT	Severe Thunderstorm Warning	LOT	Winnebago	39 min
Jun 4, 10:39 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Linn	56 min
Jun 4, 10:56 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Linn	42 min
Jun 4, 11:01 PM CDT	Tornado Warning	DVN	Linn	40 min
Jun 4, 11:04 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Lee, Van Buren	50 min
Jun 4, 11:22 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Jones	50 min
Jun 4, 11:27 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	18 min
Jun 4, 11:51 PM CDT	Severe Thunderstorm Warning	DVN	Rock Island	39 min
Jun 4, 11:52 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	53 min
Jun 4, 11:59 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Muscatine, Scott	42 min
Jun 5, 12:15 AM CDT	Severe Thunderstorm Warning	MKX	Rock	34 min
Jun 5, 12:21 AM CDT	Severe Thunderstorm Warning	DVN	Jo Daviess, Stephenson	57 min
Jun 5, 12:35 AM CDT	Severe Thunderstorm Warning	MKX	Iowa	42 min
Jun 5, 12:45 AM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette	46 min
Jun 5, 12:51 AM CDT	Severe Thunderstorm Warning	DVN	Carroll, Stephenson	43 min
Jun 5, 1:21 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Rock	44 min
Jun 5, 1:57 AM CDT	Severe Thunderstorm Warning	MKX	Rock	36 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.3 hours before the alert went out and 25 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2060 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1369 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS20 KWNS 050115
SEL7  
SPC WW 050115
IAZ000-ILZ000-MNZ000-MOZ000-WIZ000-050900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 397
NWS STORM PREDICTION CENTER NORMAN OK
815 PM CDT SAT JUN 4 2005

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       EASTERN IOWA
       WESTERN AND NORTHERN ILLINOIS
       EXTREME SOUTHEAST MINNESOTA
       NORTHEAST MISSOURI
       SOUTHWEST WISCONSIN

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 815 PM UNTIL
400 AM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES NORTHWEST OF LONEROCK
WISCONSIN TO 65 MILES SOUTH SOUTHEAST OF QUINCY ILLINOIS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 391...WW 392...WW 393...WW
394...WW 395...WW 396...

DISCUSSION...THUNDERSTORMS EXPECTED TO DEVELOP AND SPREAD NEWD INTO
WW AREA THROUGH EARLY SUNDAY...WHERE CONDITIONS DOWNSTREAM FROM
APPROACHING CNTRL PLNS SHORTWAVE TROUGH WILL BECOME INCREASINGLY
FAVORABLE FOR LARGE HAIL/HIGH WIND AND A FEW TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24035.


...CORFIDI

433,0890 390,0890 390,0922 433,0923

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 4, 7:55 PM CDT	Mesoscale Discussion	SPC	Adams, Brown, Bureau, Carroll, Cass, Fulton and 22 more	2 hr
Jun 4, 10:00 PM CDT	Mesoscale Discussion	SPC	Adams, Brown, Bureau, Calhoun, Carroll, Cass and 32 more	90 min
Jun 4, 11:25 PM CDT	Tornado Watch	SPC	Boone, Lake, McHenry, Winnebago	5 hr
Jun 5, 12:55 AM CDT	Mesoscale Discussion	SPC	Adams, Brown, Bureau, Calhoun, Carroll, Cass and 32 more	95 min
Jun 5, 2:52 AM CDT	Mesoscale Discussion	SPC	Boone, Christian, Cook, DeKalb, DeWitt, DuPage and 20 more	83 min
Jun 5, 1:45 PM CDT	Severe Thunderstorm Watch	SPC	Clark, Clay, Coles, Crawford, Cumberland, Douglas and 6 more	7 hr
Jun 4, 7:00 PM CDT	Tornado Watch	SPC	Adair, Audubon, Black Hawk, Boone, Bremer, Buena Vista and 43 more	7 hr
Jun 4, 9:18 PM CDT	Mesoscale Discussion	SPC	Appanoose, Decatur, Fremont, Lucas, Monroe, Page and 3 more	87 min
Jun 4, 10:23 PM CDT	Mesoscale Discussion	SPC	Appanoose, Decatur, Monroe, Page, Ringgold, Taylor and 1 more	52 min
Jun 4, 11:45 PM CDT	Severe Thunderstorm Watch	SPC	Buena Vista, Cherokee, Clay, Crawford, Dickinson, Harrison and 10 more	5 hr
Jun 5, 12:19 PM CDT	Mesoscale Discussion	SPC	Allamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 14 more	86 min
Jun 5, 12:50 PM CDT	Severe Thunderstorm Watch	SPC	Allamakee, Bremer, Butler, Chickasaw, Clayton, Fayette and 4 more	6 hr
Jun 5, 3:21 PM CDT	Mesoscale Discussion	SPC	Allamakee, Bremer, Butler, Chickasaw, Clayton, Fayette and 4 more	84 min
Jun 5, 6:07 PM CDT	Mesoscale Discussion	SPC	Allamakee, Bremer, Chickasaw, Clayton, Fayette, Howard and 2 more	53 min
Jun 4, 7:09 PM CDT	Mesoscale Discussion	SPC	Barry, Barton, Cedar, Dade, Jasper, Lawrence and 3 more	96 min
Jun 4, 8:35 PM CDT	Tornado Watch	SPC	Barton, Jasper, McDonald, Newton, St. Clair, Vernon	2 hr
Jun 4, 10:45 PM CDT	Tornado Watch	SPC	Barry, Barton, Bates, Benton, Boone, Camden and 28 more	7 hr
Jun 4, 11:57 PM CDT	Mesoscale Discussion	SPC	Christian, Crawford, Dent, Douglas, Howell, Laclede and 9 more	63 min
Jun 5, 12:35 AM CDT	Severe Thunderstorm Watch	SPC	Christian, Douglas, Howell, Ozark, Stone, Taney and 3 more	5 hr
Jun 4, 7:15 PM CDT	Mesoscale Discussion	SPC	Ashland, Barron, Bayfield, Buffalo, Calumet, Chippewa and 29 more	90 min
Jun 5, 3:40 PM CDT	Tornado Watch	SPC	Brown, Calumet, Florence, Forest, Iron, Kewaunee and 16 more	5 hr

Nearby

Tornado Watches in Illinois, 2005 Tornado Watches in Iowa, 2005 Tornado Watches in Wisconsin, 2005 Every tornado watch in 2005

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.