Alert archive / Illinois / Tornado Watches in 2013
Tornado Watch 187
The Storm Prediction Center issued this tornado watch at May 19, 2013, 8:10 PM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 19, 2013, 8:10 PM CDT (01:10 UTC)
- Expired
- May 20, 2013, 2:24 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 91 counties
Allamakee County, IA, Benton County, IA, Buchanan County, IA, Cedar County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Fayette County, IA, Floyd 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, Mitchell County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Washington County, IA, Winneshiek County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, DeKalb County, IL, Fulton 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, 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, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, La Crosse County, WI, Lafayette County, WI, Marquette County, WI, Monroe County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Walworth County, WI
The radar
The Quad Cities radar (KDVN), 106 km from the middle of the area, began a volume at 01:12 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 90%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 8:25 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Lee, McHenry, Ogle, Winnebago | 65 min |
| May 19, 8:37 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Johnson, Washington | 38 min |
| May 19, 8:41 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Floyd, Howard, Winneshiek | 64 min |
| May 19, 8:48 PM CDT | Severe Thunderstorm Warning | MKX | Green, Rock | 57 min |
| May 19, 9:10 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton, Fayette, Winneshiek | 80 min |
| May 19, 9:10 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Washington | 50 min |
| May 19, 9:14 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 61 min |
| May 19, 9:22 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Cook, DeKalb, DuPage, Kane, Kendall and 3 more | 68 min |
| May 19, 9:26 PM CDT | Severe Thunderstorm Warning | ARX | Fillmore, Houston | 64 min |
| May 19, 9:45 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Jefferson, Keokuk, Van Buren, Washington | 45 min |
| May 19, 10:12 PM CDT | Severe Thunderstorm Warning | ARX | Houston, Winona | 48 min |
| May 19, 10:27 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Johnson, Keokuk, Linn, Washington | 48 min |
| May 19, 10:28 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Vernon | 47 min |
| May 19, 10:42 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson, Monroe, Trempealeau | 63 min |
| May 19, 10:43 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson | 47 min |
| May 19, 10:48 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Johnson, Linn | 57 min |
| May 19, 10:55 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 50 min |
| May 19, 11:00 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Winneshiek | 45 min |
| May 19, 11:07 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Delaware, Dubuque, Jackson, Jones and 1 more | 38 min |
| May 19, 11:10 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Juneau, Monroe, Vernon | 50 min |
| May 19, 11:19 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Mercer, Rock Island, Warren | 56 min |
| May 19, 11:36 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 39 min |
| May 19, 11:36 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 54 min |
| May 19, 11:44 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 46 min |
| May 20, 12:03 AM CDT | Severe Thunderstorm Warning | ARX | Richland | 42 min |
| May 20, 12:25 AM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette, Sauk | 35 min |
| May 20, 12:58 AM CDT | Severe Thunderstorm Warning | MKX | Sauk | 32 min |
| May 20, 1:30 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Green Lake, Marquette | 45 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
Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.2 hours before the alert went out and 305 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.
- Mixed-layer CAPE
- 117 J/kg
- Mixed-layer CIN
- -276 J/kg
- Mixed-layer LCL
- 1683 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 7:13 PM CDT | Mesoscale Discussion | SPC | Hancock, Henderson, Henry, Mercer, Rock Island, Warren | 62 min |
| May 19, 7:46 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Henry, Jo Daviess, Knox and 11 more | 59 min |
| May 19, 10:16 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Pike | 59 min |
| May 19, 10:58 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Fulton, Hancock and 22 more | 62 min |
| May 20, 3:27 PM CDT | Mesoscale Discussion | SPC | Brown, Calhoun, Cass, Champaign, Christian, DeWitt and 21 more | 63 min |
| May 20, 5:07 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Greene, Jersey and 9 more | 23 min |
| May 20, 5:24 PM CDT | Tornado Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 31 more | 7 hr |
| May 20, 6:35 PM CDT | Severe Thunderstorm Watch | SPC | Henderson, Mercer, Warren | 5 hr |
| May 19, 8:21 PM CDT | Mesoscale Discussion | SPC | Butler, Cerro Gordo, Emmet, Franklin, Grundy, Hamilton and 9 more | 54 min |
| May 19, 9:11 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Decatur, Jasper, Lucas, Mahaska and 7 more | 64 min |
| May 20, 5:38 PM CDT | Mesoscale Discussion | SPC | Boone, Butler, Clarke, Dallas, Decatur, Franklin and 14 more | 67 min |
| May 19, 9:38 PM CDT | Mesoscale Discussion | SPC | Chippewa, Iron, Price, Rusk | 67 min |
| May 20, 1:41 AM CDT | Mesoscale Discussion | SPC | Adams, Columbia, Dane, Dodge, Fond du Lac, Green and 6 more | 79 min |
Nearby
Tornado Watches in Illinois, 2013Tornado Watches in Iowa, 2013Tornado Watches in Wisconsin, 2013Every tornado watch in 2013
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.