Alert archive / Indiana / Tornado Watches in 2007

Tornado Watch 724

October 18, 200734 counties in Illinois; 68 counties in Indiana; 59 counties in Michigan

The Storm Prediction Center issued this tornado watch at Oct 18, 2007, 3:23 PM CDT for 34 counties in Illinois; 68 counties in Indiana; 59 counties in Michigan. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Oct 18, 2007, 3:23 PM CDT (20:23 UTC)
Expired: Oct 18, 2007, 11:00 PM CDT
In force: 8 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 80 kt

All 161 counties

Bond County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Cook County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, DuPage County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Iroquois County, IL, Jasper County, IL, Kankakee County, IL, Lake County, IL, Lawrence County, IL, Macon County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Piatt County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Shelby County, IL, Vermilion County, IL, Washington County, IL, Will County, IL, Adams County, IN, Allen County, IN, Bartholomew County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jackson County, IN, Jasper County, IN, Jay County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Saint Joseph County, IN, Shelby County, IN, Starke County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Alcona County, MI, Allegan County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Barry County, MI, Bay County, MI, Benzie County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Charlevoix County, MI, Cheboygan County, MI, Clare County, MI, Clinton County, MI, Crawford County, MI, Eaton County, MI, Emmet County, MI, Genesee County, MI, Gladwin County, MI, Grand Traverse County, MI, Gratiot County, MI, Hillsdale County, MI, Huron County, MI, Ingham County, MI, Ionia County, MI, Iosco County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kalkaska County, MI, Kent County, MI, Lake County, MI, Leelanau County, MI, Livingston County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Montmorency County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Ottawa County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Saint Joseph County, MI, Shiawassee County, MI, Tuscola County, MI, Van Buren County, MI, Wexford County, MI

The radar

The Grand Rapids radar (KGRR), 37 km from the middle of the area, began a volume at 20:25 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 70%
One or more EF2 to EF5 tornadoes: 40%
Ten or more severe wind reports: 95%
One or more gusts of 65 knots or more: 90%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Oct 18, 3:37 PM CDT	Severe Thunderstorm Warning	APX	Antrim, Charlevoix, Otsego	37 min
Oct 18, 3:43 PM CDT	Severe Thunderstorm Warning	APX	Crawford, Roscommon	32 min
Oct 18, 3:59 PM CDT	Severe Thunderstorm Warning	APX	Cheboygan	61 min
Oct 18, 4:23 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison, Saint Clair	37 min
Oct 18, 4:33 PM CDT	Tornado Warning	APX	Cheboygan, Presque Isle	38 min
Oct 18, 4:45 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon, Moultrie, Shelby	45 min
Oct 18, 4:45 PM CDT	Severe Thunderstorm Warning	IND	Lawrence, Martin	45 min
Oct 18, 4:49 PM CDT	Severe Thunderstorm Warning	ILX	Christian, DeWitt, Macon, Piatt	41 min
Oct 18, 4:55 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Madison, Montgomery	50 min
Oct 18, 5:05 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Madison, Marion, Saint Clair	40 min
Oct 18, 5:06 PM CDT	Severe Thunderstorm Warning	LSX	Randolph, Washington	24 min
Oct 18, 5:11 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	19 min
Oct 18, 5:13 PM CDT	Severe Thunderstorm Warning	LOT	Cook, Will	29 min
Oct 18, 5:14 PM CDT	Severe Thunderstorm Warning	IWX	Pulaski, White	51 min
Oct 18, 5:19 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Macon	41 min
Oct 18, 5:19 PM CDT	Severe Thunderstorm Warning	IND	Brown, Jackson, Monroe	41 min
Oct 18, 5:22 PM CDT	Tornado Warning	LSX	Bond, Fayette	38 min
Oct 18, 5:24 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Macon, Piatt	35 min
Oct 18, 5:27 PM CDT	Severe Thunderstorm Warning	GRR	Kalamazoo	18 min
Oct 18, 5:28 PM CDT	Tornado Warning	APX	Alpena, Montmorency, Presque Isle	26 min
Oct 18, 5:31 PM CDT	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion	44 min
Oct 18, 5:33 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Douglas, Macon, Moultrie, Piatt, Shelby	42 min
Oct 18, 5:35 PM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage, Grundy, Will	55 min
Oct 18, 5:47 PM CDT	Tornado Warning	ILX	Champaign, Douglas, Macon, Moultrie, Piatt, Shelby	43 min
Oct 18, 5:49 PM CDT	Tornado Warning	ILX	Coles, Cumberland, Effingham, Shelby	41 min
Oct 18, 5:49 PM CDT	Severe Thunderstorm Warning	GRR	Barry	41 min
Oct 18, 5:50 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, DeWitt, McLean, Piatt	40 min
Oct 18, 5:51 PM CDT	Severe Thunderstorm Warning	IWX	Cass, Fulton, Kosciusko, Marshall, Pulaski, White	54 min
Oct 18, 5:55 PM CDT	Severe Thunderstorm Warning	LOT	Cook	35 min
Oct 18, 5:55 PM CDT	Tornado Warning	GRR	Barry, Eaton, Ionia	35 min
Oct 18, 5:56 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois, Livingston	50 min
Oct 18, 5:57 PM CDT	Severe Thunderstorm Warning	IWX	LaPorte, Marshall, Saint Joseph, Starke	40 min
Oct 18, 6:00 PM CDT	Tornado Warning	IWX	Cass, Fulton, Miami	45 min
Oct 18, 6:05 PM CDT	Severe Thunderstorm Warning	APX	Leelanau	40 min
Oct 18, 6:06 PM CDT	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko, LaGrange	54 min
Oct 18, 6:14 PM CDT	Severe Thunderstorm Warning	GRR	Osceola	31 min
Oct 18, 6:19 PM CDT	Severe Thunderstorm Warning	APX	Crawford, Kalkaska, Missaukee, Roscommon	41 min
Oct 18, 6:20 PM CDT	Tornado Warning	ILX	Coles, Cumberland, Douglas, Moultrie	40 min
Oct 18, 6:23 PM CDT	Severe Thunderstorm Warning	IWX	LaPorte, Saint Joseph	67 min
Oct 18, 6:25 PM CDT	Severe Thunderstorm Warning	APX	Antrim, Charlevoix, Emmet	65 min
Oct 18, 6:25 PM CDT	Tornado Warning	GRR	Barry, Clinton, Eaton, Ingham, Ionia	35 min
Oct 18, 6:26 PM CDT	Tornado Warning	ILX	Champaign, Douglas, Vermilion	34 min
Oct 18, 6:30 PM CDT	Severe Thunderstorm Warning	LOT	Kankakee	29 min
Oct 18, 6:30 PM CDT	Severe Thunderstorm Warning	APX	Benzie, Grand Traverse, Leelanau, Manistee	45 min
Oct 18, 6:38 PM CDT	Severe Thunderstorm Warning	APX	Antrim, Charlevoix, Kalkaska, Otsego	52 min
Oct 18, 6:42 PM CDT	Tornado Warning	IWX	Fulton, Kosciusko	48 min
Oct 18, 6:46 PM CDT	Severe Thunderstorm Warning	LOT	Jasper, Lake, Newton, Porter	59 min
Oct 18, 6:46 PM CDT	Severe Thunderstorm Warning	APX	Cheboygan, Montmorency, Otsego, Presque Isle	23 min
Oct 18, 6:47 PM CDT	Severe Thunderstorm Warning	IWX	Branch, Saint Joseph	58 min
Oct 18, 6:48 PM CDT	Tornado Warning	DTX	Shiawassee	53 min
Oct 18, 6:49 PM CDT	Severe Thunderstorm Warning	APX	Grand Traverse, Kalkaska, Manistee, Missaukee, Wexford	56 min
Oct 18, 6:49 PM CDT	Tornado Warning	APX	Antrim, Kalkaska	41 min
Oct 18, 6:55 PM CDT	Severe Thunderstorm Warning	GRR	Allegan, Ottawa	50 min
Oct 18, 6:56 PM CDT	Severe Thunderstorm Warning	APX	Crawford, Oscoda, Roscommon	30 min
Oct 18, 6:57 PM CDT	Tornado Warning	ILX	Coles, Douglas, Edgar, Vermilion	48 min
Oct 18, 6:57 PM CDT	Tornado Warning	GRR	Clinton	33 min
Oct 18, 6:58 PM CDT	Tornado Warning	ILX	Vermilion	32 min
Oct 18, 7:01 PM CDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	14 min
Oct 18, 7:01 PM CDT	Severe Thunderstorm Warning	GRR	Kalamazoo, Van Buren	21 min
Oct 18, 7:02 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Montgomery	13 min
Oct 18, 7:02 PM CDT	Severe Thunderstorm Warning	DTX	Midland	29 min
Oct 18, 7:06 PM CDT	Severe Thunderstorm Warning	IWX	LaGrange, Noble, Steuben	54 min
Oct 18, 7:09 PM CDT	Tornado Warning	ILX	Lawrence, Richland	36 min
Oct 18, 7:09 PM CDT	Severe Thunderstorm Warning	IWX	LaPorte	51 min
Oct 18, 7:10 PM CDT	Tornado Warning	IWX	Noble, Whitley	50 min
Oct 18, 7:11 PM CDT	Severe Thunderstorm Warning	IND	Warren	34 min
Oct 18, 7:18 PM CDT	Severe Thunderstorm Warning	DTX	Saginaw	72 min
Oct 18, 7:18 PM CDT	Severe Thunderstorm Warning	GRR	Kent, Muskegon, Ottawa	42 min
Oct 18, 7:19 PM CDT	Severe Thunderstorm Warning	APX	Alcona, Arenac, Gladwin, Iosco, Ogemaw, Oscoda and 1 more	44 min
Oct 18, 7:19 PM CDT	Tornado Warning	APX	Alcona, Crawford, Oscoda	27 min
Oct 18, 7:23 PM CDT	Severe Thunderstorm Warning	IWX	LaPorte, Starke	39 min
Oct 18, 7:26 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Marion, Washington	49 min
Oct 18, 7:28 PM CDT	Severe Thunderstorm Warning	IND	Boone, Hendricks, Montgomery, Putnam	36 min
Oct 18, 7:30 PM CDT	Severe Thunderstorm Warning	IND	Fountain, Parke, Vermillion	45 min
Oct 18, 7:35 PM CDT	Tornado Warning	DTX	Saginaw	55 min
Oct 18, 7:38 PM CDT	Tornado Warning	APX	Alcona, Alpena	38 min
Oct 18, 7:39 PM CDT	Severe Thunderstorm Warning	APX	Antrim, Charlevoix, Kalkaska, Otsego	66 min
Oct 18, 7:40 PM CDT	Tornado Warning	LSX	Bond, Clinton, Fayette, Marion	35 min
Oct 18, 7:41 PM CDT	Tornado Warning	ILX	Lawrence	19 min
Oct 18, 7:42 PM CDT	Severe Thunderstorm Warning	APX	Alpena, Montmorency	33 min
Oct 18, 7:45 PM CDT	Severe Thunderstorm Warning	GRR	Allegan, Ottawa	45 min
Oct 18, 7:48 PM CDT	Tornado Warning	GRR	Eaton, Ingham	27 min
Oct 18, 7:50 PM CDT	Severe Thunderstorm Warning	IWX	LaPorte, Saint Joseph	40 min
Oct 18, 7:50 PM CDT	Severe Thunderstorm Warning	LOT	Benton, Jasper	18 min
Oct 18, 7:54 PM CDT	Severe Thunderstorm Warning	GRR	Montcalm	51 min
Oct 18, 7:56 PM CDT	Severe Thunderstorm Warning	IND	Clinton, Howard, Tipton	49 min
Oct 18, 7:56 PM CDT	Severe Thunderstorm Warning	GRR	Kalamazoo, Van Buren	49 min
Oct 18, 7:58 PM CDT	Tornado Warning	IWX	Saint Joseph	47 min
Oct 18, 7:58 PM CDT	Severe Thunderstorm Warning	GRR	Allegan	27 min
Oct 18, 8:00 PM CDT	Severe Thunderstorm Warning	GRR	Kent	15 min
Oct 18, 8:02 PM CDT	Severe Thunderstorm Warning	GRR	Isabella, Mecosta	33 min
Oct 18, 8:06 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	29 min
Oct 18, 8:06 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham	39 min
Oct 18, 8:09 PM CDT	Severe Thunderstorm Warning	IWX	Pulaski, White	66 min
Oct 18, 8:09 PM CDT	Severe Thunderstorm Warning	GRR	Kent, Muskegon, Ottawa	51 min
Oct 18, 8:10 PM CDT	Severe Thunderstorm Warning	IND	Tippecanoe	35 min
Oct 18, 8:16 PM CDT	Severe Thunderstorm Warning	GRR	Calhoun, Kalamazoo, Van Buren	44 min
Oct 18, 8:18 PM CDT	Tornado Warning	IND	Tippecanoe	42 min
Oct 18, 8:18 PM CDT	Severe Thunderstorm Warning	DTX	Bay	23 min
Oct 18, 8:20 PM CDT	Severe Thunderstorm Warning	GRR	Clare, Gratiot, Isabella, Montcalm	55 min
Oct 18, 8:21 PM CDT	Severe Thunderstorm Warning	APX	Cheboygan, Montmorency, Otsego, Presque Isle	25 min
Oct 18, 8:23 PM CDT	Severe Thunderstorm Warning	APX	Kalkaska, Missaukee, Wexford	41 min
Oct 18, 8:26 PM CDT	Severe Thunderstorm Warning	DTX	Midland	49 min
Oct 18, 8:29 PM CDT	Tornado Warning	IWX	Cass, Saint Joseph	46 min
Oct 18, 8:32 PM CDT	Severe Thunderstorm Warning	APX	Arenac, Gladwin, Iosco, Ogemaw, Roscommon	58 min
Oct 18, 8:37 PM CDT	Severe Thunderstorm Warning	APX	Antrim, Crawford, Kalkaska, Otsego	51 min
Oct 18, 8:37 PM CDT	Severe Thunderstorm Warning	GRR	Kent, Ottawa	38 min
Oct 18, 8:38 PM CDT	Tornado Warning	IND	Boone, Clinton	36 min
Oct 18, 8:39 PM CDT	Severe Thunderstorm Warning	GRR	Kent, Montcalm	42 min
Oct 18, 8:42 PM CDT	Severe Thunderstorm Warning	IWX	Fulton, Marshall, Starke	48 min
Oct 18, 8:59 PM CDT	Tornado Warning	GRR	Kalamazoo	31 min
Oct 18, 9:04 PM CDT	Tornado Warning	GRR	Calhoun, Eaton, Ingham, Jackson	26 min
Oct 18, 9:06 PM CDT	Tornado Warning	IND	Howard	39 min
Oct 18, 9:09 PM CDT	Severe Thunderstorm Warning	APX	Cheboygan, Otsego	51 min
Oct 18, 9:13 PM CDT	Tornado Warning Emergency	IWX	Elkhart, Kosciusko, Marshall	47 min
Oct 18, 9:16 PM CDT	Tornado Warning	IND	Jackson, Lawrence	30 min
Oct 18, 9:25 PM CDT	Severe Thunderstorm Warning	APX	Arenac, Gladwin, Iosco, Ogemaw	65 min
Oct 18, 9:25 PM CDT	Tornado Warning	GRR	Calhoun	35 min
Oct 18, 9:29 PM CDT	Tornado Warning	GRR	Ingham	16 min
Oct 18, 9:30 PM CDT	Tornado Warning	IWX	Miami, Wabash	45 min
Oct 18, 9:33 PM CDT	Tornado Warning	DTX	Shiawassee	57 min
Oct 18, 9:36 PM CDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	24 min
Oct 18, 9:41 PM CDT	Tornado Warning	IWX	LaGrange	34 min
Oct 18, 9:45 PM CDT	Severe Thunderstorm Warning	IWX	Elkhart, LaGrange	60 min
Oct 18, 9:45 PM CDT	Tornado Warning	GRR	Ingham	15 min
Oct 18, 9:59 PM CDT	Tornado Warning	IWX	Huntington, Whitley	28 min
Oct 18, 10:04 PM CDT	Severe Thunderstorm Warning	GRR	Eaton	21 min
Oct 18, 10:05 PM CDT	Tornado Warning	IWX	Branch, Saint Joseph	40 min
Oct 18, 10:09 PM CDT	Tornado Warning	GRR	Calhoun	36 min
Oct 18, 10:10 PM CDT	Severe Thunderstorm Warning	APX	Alcona, Alpena, Iosco	37 min
Oct 18, 10:11 PM CDT	Tornado Warning	DTX	Genesee	49 min
Oct 18, 10:25 PM CDT	Tornado Warning	GRR	Calhoun	38 min
Oct 18, 10:30 PM CDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb, Noble	45 min
Oct 18, 10:30 PM CDT	Tornado Warning	DTX	Saginaw, Tuscola	75 min
Oct 18, 10:35 PM CDT	Severe Thunderstorm Warning	GRR	Eaton, Ingham	40 min
Oct 18, 10:52 PM CDT	Tornado Warning	GRR	Ingham, Jackson	23 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

Detroit, MI (KDTX), launched 12:00Z, 8.4 hours before the alert went out and 183 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: 9 J/kg
Mixed-layer CIN: -154 J/kg
Mixed-layer LCL: 923 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 17, 7:57 PM CDT	Mesoscale Discussion	SPC	Adams, Brown, Fulton, Hancock, Henderson, McDonough and 3 more	63 min
Oct 17, 10:56 PM CDT	Mesoscale Discussion	SPC	Adams, Alexander, Bond, Brown, Calhoun, Cass and 34 more	64 min
Oct 17, 11:40 PM CDT	Tornado Watch	SPC	Alexander, Bond, Calhoun, Clinton, Fayette, Greene and 13 more	4 hr
Oct 18, 2:01 AM CDT	Tornado Watch	SPC	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	5 hr
Oct 18, 2:02 AM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Christian, Clinton, Fayette, Greene and 14 more	58 min
Oct 18, 2:27 AM CDT	Tornado Watch	SPC	Edwards, Franklin, Gallatin, Hamilton, Hardin, Jefferson and 9 more	4 hr
Oct 18, 4:08 AM CDT	Mesoscale Discussion	SPC	Alexander, Champaign, Clark, Clay, Coles, Crawford and 34 more	67 min
Oct 18, 4:37 AM CDT	Tornado Watch	SPC	Ford, Iroquois, Kankakee	3 hr
Oct 18, 11:36 AM CDT	Mesoscale Discussion	SPC	Boone, Carroll, Kane, McHenry, Ogle, Stephenson and 1 more	2 hr
Oct 18, 1:31 PM CDT	Tornado Watch	SPC	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	9 hr
Oct 18, 1:44 PM CDT	Mesoscale Discussion	SPC	Champaign, Clark, Clay, Coles, Crawford, Cumberland and 23 more	2 hr
Oct 18, 5:39 PM CDT	Mesoscale Discussion	SPC	Alexander, Gallatin, Hamilton, Hardin, Johnson, Massac and 6 more	66 min
Oct 18, 6:34 PM CDT	Mesoscale Discussion	SPC	Champaign, Clark, Clay, Clinton, Coles, Crawford and 16 more	116 min
Oct 18, 10:26 AM CDT	Mesoscale Discussion	SPC	Clark, Crawford, Floyd, Harrison, Perry, Spencer	2 hr
Oct 18, 1:59 PM CDT	Mesoscale Discussion	SPC	Allen, Cass, DeKalb, Elkhart, Fulton, Huntington and 13 more	61 min
Oct 18, 2:31 PM CDT	Tornado Watch	SPC	Dickinson, Gogebic, Iron, Menominee	4 hr
Oct 18, 5:49 PM CDT	Mesoscale Discussion	SPC	Menominee	86 min
Oct 18, 6:30 PM CDT	Mesoscale Discussion	SPC	Adams, Allen, Auglaize, Brown, Butler, Champaign and 25 more	90 min

Nearby

Tornado Watches in Indiana, 2007 Tornado Watches in Michigan, 2007 Tornado Watches in Illinois, 2007 Every tornado watch in 2007

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.