Alert archive / Illinois / River Flood Warnings in 2026

River Flood Warning 25, NWS Lincoln, IL

June 18, 2026Fulton County, Knox County, Illinois

NWS Lincoln, IL issued this river flood warning at Jun 18, 2026, 2:47 AM CDT for Fulton County, Knox County, Illinois. It took effect at Jun 18, 2026, 6:04 AM CDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Jun 18, 2026, 2:47 AM CDT (07:47 UTC)
In effect from: Jun 18, 2026, 6:04 AM CDT
Expired: Jun 18, 2026, 8:48 PM CDT
In force: 15 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: Minor

Counties Fulton County, IL, Knox County, IL

The radar

The Lincoln radar (KILX), 96 km from the middle of the area, began a volume at 07:49 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 river

Written for the forecast point Spoon River (W-IL) at London Mills (LNMI2). The gauge peaked at 15.61 ft at Jun 18, 2026, 12:00 PM CDT.

Action stage: 13 ft
Minor stage: 15 ft
Moderate stage: 21 ft
Major stage: 24 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05569500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning 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 river flood warning went out at Jun 18, 2:27 AM CDT, 20 minutes earlier.

Area forecast discussion, Jun 18, 2:27 AM CDT, 20 minutes before

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Hazardous weather outlook, Jun 17, 3:28 PM CDT, 11 hours 19 minutes before

Hazardous Weather Outlook
National Weather Service Lincoln IL
328 PM CDT Wed Jun 17 2026

ILZ036>038-040>057-061>063-066>068-071>073-181100-
Fulton-Tazewell-McLean-Schuyler-Mason-Logan-De Witt-Piatt-Champaign-
Vermilion-Cass-Menard-Scott-Morgan-Sangamon-Christian-Macon-Moultrie-
Douglas-Coles-Edgar-Shelby-Cumberland-Clark-Effingham-Jasper-
Crawford-Clay-Richland-Lawrence-
328 PM CDT Wed Jun 17 2026

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

.DAY ONE...Tonight.

A broken line of thunderstorms capable of all severe hazards will
settle southward through central Illinois late this afternoon and
evening. The strongest cells within the line will have the potential
to produce tornadoes, damaging wind gusts in excess of 70mph, and hail
large than golf balls. The highest probability for strong tornadoes
will focus along and south of a Springfield to Paris line.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thunderstorms will develop across the area late Saturday night into
Sunday. At this time it appears the severe weather risk will remain
low.

River flooding is ongoing for portions of central Illinois. Please
refer to the latest flood statements for details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed through 10pm this evening.

Expected storm motion is toward the east at 60-70mph.

ILZ027>031-181100-
Knox-Stark-Peoria-Marshall-Woodford-
328 PM CDT Wed Jun 17 2026

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

.DAY ONE...Tonight.

A few strong to severe thunderstorms capable of damaging wind gusts
and large hail will track across north-central Illinois late this
afternoon. The storms will drop south of the Peoria area by early
evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thunderstorms will develop across the area late Saturday night into
Sunday. At this time it appears the severe weather risk will remain
low.

River flooding is ongoing for portions of central Illinois. Please
refer to the latest flood statements for details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through 5pm this afternoon.

Expected storm motion is toward the east at 60-70mph.

Barnes

In the hours before

Local storm report, Jun 18, 12:54 AM CDT, 1 hour 53 minutes before

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Local storm report, Jun 18, 12:55 AM CDT, 1 hour 52 minutes before

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Local storm report, Jun 18, 12:57 AM CDT, 1 hour 50 minutes before

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Local storm report, Jun 18, 12:58 AM CDT, 1 hour 49 minutes before

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Local storm report, Jun 18, 2:14 AM CDT, 33 minutes before

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Local storm report, Jun 18, 2:26 AM CDT, 21 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:07 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	ILX	Clark, Coles, Edgar	53 min
Jun 17, 7:08 PM CDT	Severe Thunderstorm Warning	ILX	Macon, Moultrie, Piatt	32 min
Jun 17, 7:14 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Douglas, Moultrie, Shelby	49 min
Jun 17, 7:21 PM CDT	Tornado Warning	ILX	Christian, Shelby	22 min
Jun 17, 7:36 PM CDT	Severe Thunderstorm Warning	ILX	Effingham, Shelby	39 min
Jun 17, 7:45 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Edgar	45 min
Jun 17, 7:49 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ILX	Clark, Coles, Crawford, Cumberland, Effingham, Jasper	56 min
Jun 17, 7:51 PM CDT	Tornado Warning	ILX	Cumberland, Effingham, Jasper, Shelby	39 min
Jun 17, 8:14 PM CDT	Tornado Warning	ILX	Clark	12 min
Jun 17, 8:21 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	ILX	Cumberland, Jasper	39 min
Jun 17, 8:38 PM CDT	Tornado Warning	ILX	Clark, Crawford	52 min
Jun 17, 8:54 PM CDT	Tornado Warning	ILX	Effingham	51 min
Jun 17, 8:56 PM CDT	River Flood Warning	ILX	Piatt	7 days
Jun 17, 9:12 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Douglas, Edgar	48 min
Jun 17, 9:27 PM CDT	Severe Thunderstorm Warning	ILX	Jasper	23 min
Jun 17, 10:02 PM CDT	Areal Flood Advisory	ILX	Macon, Moultrie	9 hr
Jun 17, 10:14 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham	27 min
Jun 17, 10:35 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford, Cumberland, Jasper	28 min
Jun 17, 10:39 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham, Jasper, Richland	42 min
Jun 17, 11:38 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Lawrence	39 min

Nearby

River Flood Warnings in Illinois, 2026 Every river flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.