Alert archive / Illinois / Tornado Watches in 1999
Tornado Watch 48
The Storm Prediction Center issued this tornado watch at Feb 11, 1999, 2:30 PM CST for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 11, 1999, 2:30 PM CST (20:30 UTC)
- Expired
- Feb 11, 1999, 8:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 106 counties
Alexander County, IL, Bond County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Franklin County, IL, Gallatin County, IL, Grundy County, IL, Hamilton County, IL, Hardin County, IL, Iroquois County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Kankakee County, IL, LaSalle County, IL, Lawrence County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Madison County, IL, Marion County, IL, Massac County, IL, McLean County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Perry County, IL, Piatt County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Sangamon County, IL, Shelby County, IL, Union County, IL, Vermilion County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Will County, IL, Williamson County, IL, Woodford County, IL, Benton County, IN, Carroll County, IN, Clay County, IN, Fountain County, IN, Gibson County, IN, Jasper County, IN, Knox County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Montgomery County, IN, Newton County, IN, Parke County, IN, Porter County, IN, Posey County, IN, Pulaski County, IN, Starke County, IN, Sullivan County, IN, Tippecanoe County, IN, Vanderburgh County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, White County, IN, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Union County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 11, 2:47 PM CST | Severe Thunderstorm Warning | LSX | Madison | 48 min |
| Feb 11, 3:34 PM CST | Severe Thunderstorm Warning | LOT | Grundy, Kankakee, Will | 26 min |
| Feb 11, 3:39 PM CST | Severe Thunderstorm Warning | PAH | Bollinger | 21 min |
| Feb 11, 3:53 PM CST | Tornado Warning | ILX | Woodford | 37 min |
| Feb 11, 3:57 PM CST | Severe Thunderstorm Warning | PAH | Perry | 18 min |
| Feb 11, 4:12 PM CST | Severe Thunderstorm Warning | IND | Fountain, Vermillion | 48 min |
| Feb 11, 4:15 PM CST | Severe Thunderstorm Warning | PAH | Stoddard | 30 min |
| Feb 11, 4:24 PM CST | Severe Thunderstorm Warning | LSX | Fayette | 51 min |
| Feb 11, 4:37 PM CST | Severe Thunderstorm Warning | LSX | Marion | 48 min |
| Feb 11, 4:51 PM CST | Severe Thunderstorm Warning | ILX | Champaign | 39 min |
| Feb 11, 5:05 PM CST | Severe Thunderstorm Warning | PAH | Franklin | 25 min |
| Feb 11, 5:10 PM CST | Severe Thunderstorm Warning | PAH | Alexander | 35 min |
| Feb 11, 5:13 PM CST | Severe Thunderstorm Warning | PAH | Pulaski | 32 min |
| Feb 11, 5:16 PM CST | Severe Thunderstorm Warning | PAH | Union | 29 min |
| Feb 11, 5:17 PM CST | Severe Thunderstorm Warning | ILX | Clay | 28 min |
| Feb 11, 5:18 PM CST | Severe Thunderstorm Warning | PAH | Johnson, Williamson | 42 min |
| Feb 11, 5:27 PM CST | Severe Thunderstorm Warning | ILX | Clark, Edgar | 33 min |
| Feb 11, 6:46 PM CST | Severe Thunderstorm Warning | IWX | LaPorte | 29 min |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.5 hours before the alert went out and 184 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
- 394 J/kg
- Mixed-layer CIN
- -231 J/kg
- Mixed-layer LCL
- 746 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 293 m²/s²
- 0-3 km storm-relative helicity
- 310 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 11, 11:15 AM CST | Severe Thunderstorm Watch | SPC | Adams, Brown, Bureau, Calhoun, Cass, Fulton and 26 more | 7 hr |
| Feb 11, 1:00 PM CST | Severe Thunderstorm Watch | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 8 more | 5 hr |
| Feb 11, 3:30 PM CST | Severe Thunderstorm Watch | SPC | Fulton | 6 hr |
| Feb 11, 7:15 AM CST | Severe Thunderstorm Watch | SPC | Barry, Barton, Bates, Benton, Buchanan, Caldwell and 28 more | 6 hr |
Nearby
Tornado Watches in Illinois, 1999Tornado Watches in Indiana, 1999Tornado Watches in Kentucky, 1999Every tornado watch in 1999
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.