Alert archive / Illinois / Tornado Watches in 2025
Tornado Watch 101
The Storm Prediction Center issued this tornado watch at Apr 2, 2025, 4:19 PM CDT for 11 counties in Illinois; 8 counties in Missouri. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 2, 2025, 4:19 PM CDT (21:19 UTC)
- Expired
- Apr 2, 2025, 7:29 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Bond County, IL, Clinton County, IL, Fayette County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, City of Saint Louis, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 88 km from the middle of the area, began a volume at 21:18 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
- 80%
- One or more EF2 to EF5 tornadoes
- 60%
- Ten or more severe wind reports
- 80%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 80%
- One or more hailstones of 2 inches or more
- 80%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 4:30 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 30 min |
| Apr 2, 4:38 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair | 52 min |
| Apr 2, 4:55 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Reynolds | 45 min |
| Apr 2, 5:00 PM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair, Washington | 36 min |
| Apr 2, 5:11 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 64 min |
| Apr 2, 5:16 PM CDT | Tornado Warning | LSX | Bond, Fayette, Montgomery | 44 min |
| Apr 2, 5:25 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion, Washington | 50 min |
| Apr 2, 5:28 PM CDT | Tornado Warning | LSX | Clinton, Marion, Washington | 47 min |
| Apr 2, 5:38 PM CDT | Tornado Warning | LSX | Fayette | 34 min |
| Apr 2, 5:40 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 22 min |
| Apr 2, 5:46 PM CDT | Tornado Warning | LSX | Madison, Saint Francois | 23 min |
| Apr 2, 5:56 PM CDT | Tornado Warning | LSX | Fayette | 10 min |
| Apr 2, 6:15 PM CDT | Tornado Warning | LSX | Marion | 15 min |
| Apr 2, 6:19 PM CDT | Tornado Warning | LSX | Randolph | 30 min |
| Apr 2, 6:28 PM CDT | Tornado Warning | LSX | Washington | 15 min |
| Apr 2, 6:48 PM CDT | Tornado Warning | LSX | Marion | 24 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, 9.3 hours before the alert went out and 196 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 864 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 948 m²/s²
- 0-3 km storm-relative helicity
- 1028 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted.
511
WWUS20 KWNS 022116
SEL1
SPC WW 022116
ILZ000-MOZ000-030000-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 101
NWS Storm Prediction Center Norman OK
420 PM CDT Wed Apr 2 2025
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
West Central Illinois
East Central Missouri
* Effective this Wednesday afternoon and evening from 420 PM
until 700 PM CDT.
* Primary threats include...
Several tornadoes and a couple intense tornadoes likely
Widespread large hail and scattered very large hail events to 2
inches in diameter likely
Widespread damaging wind gusts to 70 mph likely
SUMMARY...A line of severe thunderstorms will continue to track
eastward across the St Louis metro area and vicinity through the
next few hours, posing a risk of all severe hazards.
The tornado watch area is approximately along and 35 statute miles
east and west of a line from 65 miles northeast of Alton IL to 45
miles south southwest of Farmington MO. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 98...WW 99...WW 100...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 24040.
...HartSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 8:47 AM CDT | Tornado Watch | SPC | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 9 more | 9 hr |
| Apr 2, 9:48 AM CDT | Mesoscale Discussion | SPC | Brown, Cass, Champaign, DeWitt, Ford, Fulton and 20 more | 117 min |
| Apr 2, 12:51 PM CDT | Mesoscale Discussion | SPC | Alexander, Johnson, Massac, Pope, Pulaski | 114 min |
| Apr 2, 2:43 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 34 more | 2 hr |
| Apr 2, 2:52 PM CDT | Tornado Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 9 hr |
| Apr 2, 3:17 PM CDT | Tornado Watch | SPC | Champaign, Christian, Clark, Clay, Coles, Crawford and 23 more | 7 hr |
| Apr 2, 5:35 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Johnson and 7 more | 115 min |
| Apr 2, 5:40 PM CDT | Mesoscale Discussion | SPC | Champaign, Iroquois, Vermilion | 95 min |
| Apr 1, 7:25 PM CDT | Severe Thunderstorm Watch | SPC | Andrew, Atchison, Buchanan, Clinton, Daviess, DeKalb and 8 more | 10 hr |
| Apr 1, 8:56 PM CDT | Mesoscale Discussion | SPC | Atchison | 64 min |
| Apr 1, 11:03 PM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, DeKalb, Holt | 117 min |
| Apr 2, 1:27 AM CDT | Mesoscale Discussion | SPC | Bates, Benton, Buchanan, Caldwell, Carroll, Cass and 21 more | 2 hr |
| Apr 2, 2:28 AM CDT | Tornado Watch | SPC | Adair, Andrew, Bates, Buchanan, Caldwell, Carroll and 25 more | 8 hr |
| Apr 2, 4:30 AM CDT | Mesoscale Discussion | SPC | Barry, Barton, Benton, Camden, Cedar, Christian and 18 more | 2 hr |
| Apr 2, 5:20 AM CDT | Tornado Watch | SPC | Barry, Barton, Benton, Camden, Cedar, Christian and 17 more | 7 hr |
| Apr 2, 6:57 AM CDT | Mesoscale Discussion | SPC | McDonald | 2 hr |
| Apr 2, 7:17 AM CDT | Mesoscale Discussion | SPC | Audrain, Benton, Boone, Callaway, Camden, Cole and 19 more | 118 min |
| Apr 2, 11:09 AM CDT | Mesoscale Discussion | SPC | Carter, Douglas, Howell, Oregon, Ozark, Ripley and 3 more | 96 min |
| Apr 2, 1:56 PM CDT | Mesoscale Discussion | SPC | Carter, Crawford, Dent, Douglas, Franklin, Howell and 13 more | 94 min |
| Apr 2, 6:12 PM CDT | Mesoscale Discussion | SPC | Dunklin, Pemiscot | 93 min |
Nearby
Tornado Watches in Illinois, 2025Tornado Watches in Missouri, 2025Every tornado watch in 2025
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.