Alert archive / Illinois / Flood Watches in 2025

Flood Watch 4, NWS Lincoln, IL

July 20, 202535 counties in Illinois

NWS Lincoln, IL issued this flood watch at Jul 20, 2025, 1:45 AM CDT for 35 counties in Illinois. It took effect at Jul 20, 2025, 2:00 AM CDT. It was in force for 29 hr.

The area

The counties it named.

The facts

Issued
Jul 20, 2025, 1:45 AM CDT (06:45 UTC)
In effect from
Jul 20, 2025, 2:00 AM CDT
Expired
Jul 21, 2025, 7:26 AM CDT
In force
29 hr
Issued by
NWS Lincoln, IL
Flood severity
None
All 35 counties

Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fulton County, IL, Jasper County, IL, Knox County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Richland County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Woodford County, IL

The radar

The Lincoln radar (KILX), 42 km from the middle of the area, began a volume at 06:48 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.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 6.8 hours before the alert went out and 231 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, Davenport, at 00:00Z on 2025-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 783 joules per kilogram.LCLLFCEL10008507005003002001001 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, Davenport, at 00:00Z on 2025-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
783 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
1060 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lincoln, IL wrote its last area forecast discussion before this flood watch went out at Jul 20, 12:36 AM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, Jul 20, 12:36 AM CDT, 1 hour 9 minutes before
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Hazardous weather outlook, Jul 19, 3:09 PM CDT, 10 hours 36 minutes before
Hazardous Weather Outlook
National Weather Service Lincoln IL
309 PM CDT Sat Jul 19 2025

ILZ027>031-036>038-201100-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-
309 PM CDT Sat Jul 19 2025

This Hazardous Weather Outlook is for central Illinois and west
central Illinois.

.DAY ONE...Tonight.

A few thunderstorms are possible this evening, but are more likely
after midnight. While the severe weather threat is low, very heavy
rain may cause localized flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Periods of thunderstorms will continue through Monday. A few storms
could be severe on Sunday, but the main concern will be with heavy
rainfall causing localized flooding.

Oppressive heat will build across the region starting Tuesday
afternoon, and will persist through the rest of the work week. Heat
indices are expected to peak in the 105 to 115 degree range on
Wednesday and Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated tonight.

ILZ040>057-061-201100-
Schuyler-Mason-Logan-De Witt-Piatt-Champaign-Vermilion-Cass-Menard-
Scott-Morgan-Sangamon-Christian-Macon-Moultrie-Douglas-Coles-Edgar-
Shelby-
309 PM CDT Sat Jul 19 2025

This Hazardous Weather Outlook is for central Illinois, east
central Illinois and west central Illinois.

.DAY ONE...Tonight.

A few thunderstorms are possible after midnight, mainly north of I-72
and Danville. Severe weather is not expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Periods of thunderstorms will continue through Monday. A few storms
could be severe on Sunday, but the main concern will be with heavy
rainfall causing localized flooding, especially Sunday night.

Oppressive heat will build across the region starting Tuesday
afternoon, and will persist through the rest of the work week. Heat
indices are expected to peak in the 105 to 115 degree range on
Wednesday and Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated tonight.

ILZ062-063-066>068-071>073-201100-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
309 PM CDT Sat Jul 19 2025

This Hazardous Weather Outlook is for southeast Illinois.

.DAY ONE...Tonight.

Areas of flooding will linger into early evening, mainly along
highway 50.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

A few thunderstorms are possible during the day on Sunday, but are
more likely Sunday night and Monday. A few storms may be strong to
severe. Areas of heavy rain may cause additional flash flooding.

Oppressive heat will build across the region starting Tuesday
afternoon, and will persist through the rest of the work week. Heat
indices are expected to peak in the 105 to 115 degree range on
Wednesday and Thursday.

Flooding on the Little Wabash River near Clay City will continue into
early Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated tonight.

Geelhart

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 20, 5:21 AM CDTSpecial Weather StatementILXStark24 min
Jul 20, 5:53 AM CDTSpecial Weather StatementILXMarshall, Woodford22 min
Jul 20, 6:18 AM CDTSpecial Weather StatementILXWoodford27 min
Jul 20, 6:47 AM CDTSpecial Weather StatementILXMcLean13 min
Jul 20, 7:11 AM CDTSpecial Weather StatementILXFord19 min
Jul 20, 4:39 PM CDTSevere Thunderstorm WarningILXChristian, Moultrie, Shelby66 min
Jul 20, 5:00 PM CDTTornado WarningILXShelby15 min
Jul 20, 5:40 PM CDTSevere Thunderstorm WarningILXEffingham, Shelby50 min
Jul 20, 5:46 PM CDTSevere Thunderstorm WarningILXCumberland, Effingham, Jasper, Shelby29 min
Jul 20, 5:49 PM CDTSevere Thunderstorm WarningILXClark, Coles, Cumberland26 min
Jul 20, 5:52 PM CDTSevere Thunderstorm WarningILXColes, Cumberland23 min
Jul 20, 6:14 PM CDTSevere Thunderstorm WarningILXClark, Crawford, Cumberland, Jasper61 min
Jul 20, 6:40 PM CDTSevere Thunderstorm WarningILXShelby35 min
Jul 20, 6:41 PM CDTSevere Thunderstorm WarningILXChristian21 min
Jul 20, 6:52 PM CDTSevere Thunderstorm WarningILXEffingham, Shelby23 min
Jul 20, 6:57 PM CDTTornado WarningILXEffingham, Shelby16 min

Nearby

Flood Watches in Illinois, 2025Every flood 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.