Alert archive / Illinois / Tornado Watches in 2024

Tornado Watch 72

April 2, 20244 states

The Storm Prediction Center issued this tornado watch at Apr 2, 2024, 2:00 AM CDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 2, 2024, 2:00 AM CDT (07:00 UTC)
Expired
Apr 2, 2024, 7:18 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 50 counties

Alexander County, IL, Clay County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Richland County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Daviess County, IN, Gibson County, IN, Knox County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Caldwell County, KY, Crittenden County, KY, Daviess County, KY, Henderson County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Cape Girardeau County, MO, Carter County, MO, Perry County, MO, Scott County, MO, Wayne County, MO

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
60%
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
20%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 2, 2:04 AM CDTSevere Thunderstorm WarningPAHPerry41 min
Apr 2, 2:21 AM CDTTornado WarningPAHPerry39 min
Apr 2, 2:25 AM CDTTornado WarningPAHJackson, Perry35 min
Apr 2, 2:58 AM CDTSevere Thunderstorm WarningPAHFranklin, Hamilton, Jackson, Jefferson, Perry, Wayne47 min
Apr 2, 3:19 AM CDTTornado WarningPAHJefferson26 min
Apr 2, 3:25 AM CDTSevere Thunderstorm WarningPAHBollinger, Wayne50 min
Apr 2, 3:46 AM CDTSevere Thunderstorm WarningPAHBollinger, Cape Girardeau, Perry, Wayne44 min
Apr 2, 3:59 AM CDTSevere Thunderstorm Warning Considerable damage threatPAHAlexander, Johnson, Pulaski, Union46 min
Apr 2, 4:07 AM CDTSevere Thunderstorm WarningPAHEdwards, Wabash, Wayne38 min
Apr 2, 4:08 AM CDTTornado WarningPAHAlexander, Union37 min
Apr 2, 4:12 AM CDTSevere Thunderstorm WarningPAHFranklin, Jackson, Perry, Williamson33 min
Apr 2, 4:18 AM CDTTornado WarningPAHEdwards, Wabash, Wayne30 min
Apr 2, 4:29 AM CDTTornado WarningPAHAlexander, Pulaski19 min
Apr 2, 4:35 AM CDTSevere Thunderstorm Warning Considerable damage threatPAHAlexander, Franklin, Jackson, Johnson, Massac, Pope and 4 more40 min
Apr 2, 4:36 AM CDTSevere Thunderstorm WarningPAHEdwards, Wabash39 min
Apr 2, 4:43 AM CDTSevere Thunderstorm Warning Considerable damage threatPAHAlexander47 min
Apr 2, 4:49 AM CDTTornado WarningPAHJohnson, Pope, Saline, Williamson26 min
Apr 2, 4:57 AM CDTSevere Thunderstorm WarningPAHEdwards, Hamilton, Wabash, Wayne, White48 min
Apr 2, 4:59 AM CDTTornado WarningPAHJohnson, Massac, Pope, Pulaski26 min
Apr 2, 5:00 AM CDTTornado WarningPAHMassac, Pope, Pulaski26 min
Apr 2, 5:08 AM CDTTornado WarningPAHMassac22 min
Apr 2, 5:11 AM CDTSevere Thunderstorm Warning Considerable damage threatPAHGallatin, Hamilton, Hardin, Johnson, Massac, Pope and 2 more64 min
Apr 2, 5:18 AM CDTTornado WarningPAHGallatin, Hardin, Pope, Saline27 min
Apr 2, 5:26 AM CDTTornado WarningPAHGallatin, White34 min
Apr 2, 5:28 AM CDTTornado WarningPAHWhite32 min
Apr 2, 5:31 AM CDTTornado WarningPAHGallatin29 min
Apr 2, 5:39 AM CDTSevere Thunderstorm WarningPAHGibson, Pike, Posey, Vanderburgh, Warrick51 min
Apr 2, 5:47 AM CDTTornado Warning Tornado observedPAHPosey, Vanderburgh, Warrick28 min
Apr 2, 5:47 AM CDTTornado WarningPAHUnion, Webster28 min
Apr 2, 5:49 AM CDTTornado WarningPAHPosey, Vanderburgh25 min
Apr 2, 5:52 AM CDTTornado WarningPAHVanderburgh, Warrick20 min
Apr 2, 5:56 AM CDTTornado WarningPAHGibson, Pike, Warrick34 min
Apr 2, 5:59 AM CDTTornado WarningPAHHenderson19 min
Apr 2, 6:00 AM CDTSevere Thunderstorm Warning Destructive damage threatPAHGibson, Pike, Spencer, Vanderburgh, Warrick45 min
Apr 2, 6:01 AM CDTSevere Thunderstorm Warning Considerable damage threatPAHSpencer59 min
Apr 2, 6:01 AM CDTTornado Warning Tornado observedPAHSpencer, Vanderburgh, Warrick44 min
Apr 2, 6:06 AM CDTTornado WarningPAHSpencer, Warrick23 min
Apr 2, 6:18 AM CDTTornado WarningPAHSpencer27 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 00:00Z, 7.0 hours before the alert went out and 252 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2024-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2024-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -179 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1400 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
-179 m²/s²
0-3 km storm-relative helicity
-167 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.

IssuedProductOfficeCountiesLasted
Apr 1, 7:37 PM CDTMesoscale DiscussionSPCClark, Crawford, Edgar, Lawrence83 min
Apr 1, 10:37 PM CDTTornado WatchSPCBond, Clinton, Fayette, Jersey, Macoupin, Madison and 6 more4 hr
Apr 1, 11:26 PM CDTMesoscale DiscussionSPCBond, Clinton, Fayette, Madison, Marion, Monroe and 3 more94 min
Apr 2, 1:16 AM CDTMesoscale DiscussionSPCClay, Clinton, Crawford, Edwards, Franklin, Gallatin and 19 more89 min
Apr 2, 10:58 AM CDTMesoscale DiscussionSPCCrawford, Edwards, Lawrence, Richland, Wabash, Wayne and 1 more3 hr
Apr 2, 11:48 AM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 9 more117 min
Apr 2, 12:08 PM CDTTornado WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 10 more6 hr
Apr 2, 2:28 PM CDTMesoscale DiscussionSPCHardin92 min
Apr 1, 7:38 PM CDTSevere Thunderstorm WatchSPCBartholomew, Boone, Brown, Clay, Daviess, Dearborn and 33 more6 hr
Apr 2, 3:10 AM CDTMesoscale DiscussionSPCBartholomew, Brown, Dearborn, Decatur, Franklin, Jackson and 9 more95 min
Apr 2, 4:55 AM CDTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Harrison, Jefferson and 7 more95 min
Apr 2, 5:55 AM CDTTornado WatchSPCClark, Crawford, Dubois, Floyd, Harrison, Perry4 hr
Apr 2, 7:16 AM CDTMesoscale DiscussionSPCHarrison89 min
Apr 2, 2:49 PM CDTTornado WatchSPCBartholomew, Brown, Clark, Crawford, Daviess, Dearborn and 24 more6 hr
Apr 2, 4:34 PM CDTMesoscale DiscussionSPCClark, Dearborn, Floyd, Harrison, Jefferson, Ohio and 2 more86 min
Apr 2, 5:15 PM CDTMesoscale DiscussionSPCDearborn, Ohio, Switzerland90 min
Apr 2, 8:32 AM CDTMesoscale DiscussionSPCCalloway, Christian, Fulton, Graves, Hickman, Marshall and 1 more88 min
Apr 2, 9:00 AM CDTMesoscale DiscussionSPCBoyd, Breathitt, Carter, Elliott, Floyd, Greenup and 10 more60 min
Apr 2, 9:20 AM CDTTornado WatchSPCBoyd, Carter, Greenup, Lawrence3 hr
Apr 2, 9:50 AM CDTTornado WatchSPCAdair, Allen, Barren, Calloway, Casey, Christian and 14 more5 hr
Apr 2, 11:58 AM CDTMesoscale DiscussionSPCBath, Breathitt, Clay, Floyd, Jackson, Johnson and 16 more2 hr
Apr 2, 12:25 PM CDTMesoscale DiscussionSPCAllen, Cumberland, Monroe, Simpson2 hr
Apr 2, 12:25 PM CDTTornado WatchSPCBath, Bell, Breathitt, Clay, Elliott, Estill and 27 more9 hr
Apr 2, 2:49 PM CDTMesoscale DiscussionSPCAdair, Allen, Barren, Bell, Breathitt, Clay and 23 more116 min
Apr 2, 6:22 PM CDTTornado WatchSPCBoyd, Carter, Greenup, Lawrence4 hr
Apr 2, 6:59 PM CDTMesoscale DiscussionSPCGreenup61 min
Apr 1, 8:02 PM CDTMesoscale DiscussionSPCBarry, Barton, Cedar, Christian, Dade, Dallas and 10 more88 min

Nearby

Tornado Watches in Illinois, 2024Tornado Watches in Kentucky, 2024Tornado Watches in Indiana, 2024Every tornado watch in 2024

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.