Alert archive / Illinois / Tornado Watches in 2019
Tornado Watch 26
The Storm Prediction Center issued this tornado watch at Mar 14, 2019, 12:24 PM CDT for 20 counties in Illinois; 5 counties in Indiana. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 14, 2019, 12:24 PM CDT (17:24 UTC)
- Expired
- Mar 14, 2019, 2:43 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 25 counties
Boone County, IL, Champaign County, IL, Cook County, IL, DeKalb County, IL, DeWitt County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Livingston County, IL, McHenry County, IL, McLean County, IL, Piatt County, IL, Vermilion County, IL, Will County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN
The radar
The Chicago radar (KLOT), 7 km from the middle of the area, began a volume at 17:24 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
- 60%
- One or more EF2 to EF5 tornadoes
- 40%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 14, 1:07 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois, Kankakee | 38 min |
| Mar 14, 1:11 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 19 min |
| Mar 14, 1:35 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 25 min |
| Mar 14, 1:38 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 41 min |
| Mar 14, 1:47 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Lake | 28 min |
| Mar 14, 1:48 PM CDT | Severe Thunderstorm Warning | LOT | Jasper, Lake, Newton, Porter | 42 min |
| Mar 14, 2:12 PM CDT | Severe Thunderstorm Warning | LOT | Porter | 24 min |
| Mar 14, 2:19 PM CDT | Tornado Warning | LOT | Porter | 14 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
Lincoln, IL (KILX), launched 12:00Z, 5.4 hours before the alert went out and 172 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
- 86 J/kg
- Mixed-layer CIN
- -267 J/kg
- Mixed-layer LCL
- 1140 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 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 |
|---|---|---|---|---|
| Mar 14, 9:31 AM CDT | Mesoscale Discussion | SPC | Edwards, Gallatin, Hardin, Massac, Pope, Saline and 2 more | 119 min |
| Mar 14, 9:47 AM CDT | Tornado Watch | SPC | Gallatin, Hardin, Massac, Pope, Wabash | 6 hr |
| Mar 14, 10:54 AM CDT | Mesoscale Discussion | SPC | DeWitt, DuPage, Ford, Fulton, Grundy, Iroquois and 17 more | 96 min |
| Mar 14, 2:37 AM CDT | Mesoscale Discussion | SPC | Dubois, Gibson, Knox, Pike, Posey, Spencer and 2 more | 83 min |
| Mar 14, 12:38 PM CDT | Mesoscale Discussion | SPC | Crawford, Perry, Spencer | 67 min |
| Mar 14, 1:51 PM CDT | Mesoscale Discussion | SPC | Elkhart, LaPorte, Marshall, Saint Joseph, Starke | 54 min |
| Mar 14, 4:03 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Dearborn, Floyd, Franklin, Harrison, Jefferson and 4 more | 5 hr |
| Mar 14, 5:08 PM CDT | Severe Thunderstorm Watch | SPC | Allen, DeKalb, LaGrange, Noble, Steuben, Whitley | 4 hr |
Nearby
Tornado Watches in Illinois, 2019Tornado Watches in Indiana, 2019Every tornado watch in 2019
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.