Red Flag Warning
* AFFECTED AREA...Knox, Stark, Peoria, Marshall, Woodford,
Fulton, Tazewell, McLean and Mason.
* TIMING...From 10 AM this morning to 8 PM CST this evening.
* 20 FOOT WINDS...West 15 to 25 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...As low as 20 percent.
* 10 HOUR FUELS...Less than 9 percent.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
From: Feb 18, 2026 10:36
Until: Feb 19, 2026 02:00
Red Flag Warning
...Critical Fire Weather Conditions Today...
* AFFECTED AREA...Portions of eastern Iowa, northwest Illinois,
and northeast Missouri.
* TIMING...Through this evening.
* WINDS...West-southwest winds 20 to 30 mph with gusts between 40
to 50 mph, strongest winds north of I-80.
* RELATIVE HUMIDITY...As low as 15 percent.
* IMPACTS...Any fire that develops will quickly spread out of
control. Fire behavior is expected to be extreme. Outdoor
burning should be avoided.
From: Feb 18, 2026 15:00
Until: Feb 19, 2026 00:30
Red Flag Warning
...RED FLAG WARNING EXPANDED TO INCLUDE CHICAGO METRO...
Conditions will turn very dry and windy this afternoon, making
conditions supportive of brush fire spread. Even with rainfall
last night generally 0.05 to 0.15 of an inch across northeastern
Illinois, the combination of warm, dry, and windy conditions will
cause fine fuels to dry out by early afternoon. As a result, the
Red Flag Warning was expanded to include Cook, DuPage, Will,
Kankakee, and Lake (IL) Counties until 8 PM this evening.
* Affected Area...Winnebago, Boone, McHenry, Ogle, Lee, De Kalb,
Kane, La Salle, Kendall, Grundy and Livingston.
* Timing...Until 8 PM CST this evening.
* Winds...Southwest 20 to 30 mph with gusts up to 50 mph.
* Relative Humidity...As low as 15 to 20 percent.
* Impacts...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
From: Feb 18, 2026 15:03
Until: Feb 18, 2026 23:15
Red Flag Warning
...Critical Fire Weather Conditions Today...
* AFFECTED AREA...Portions of eastern Iowa and northwest Illinois
* TIMING...From Wednesday morning through Wednesday evening.
* WINDS...Southwest 20 to 30 mph with gusts up to 50 mph.
* RELATIVE HUMIDITY...As low as 15 percent.
* IMPACTS...Any fire that develops will catch and spread quickly.
Fire behavior is expected to be extreme. Outdoor burning is not
recommended.
From: Feb 18, 2026 11:10
Until: Feb 18, 2026 19:15
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 24 below expected.
* WHERE...Portions of central, east central, and southeast Illinois.
* WHEN...From 9 PM this evening to 10 AM CST Wednesday.
* IMPACTS...The dangerously cold wind chills as low as 25 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 27, 2026 10:13
Until: Jan 27, 2026 22:00
Winter Weather Advisory
* WHAT...Hazardous travel conditions due to snow occurring.
* WHERE...Portions of central, east central, north central, and
northeast Illinois.
* WHEN...Until 6 PM CST Sunday.
* IMPACTS...Roads, bridges, and overpasses, will be slick and
hazardous.
* ADDITIONAL DETAILS...Total snow accumulations will range from
around an inch or two near the Interstate 88 and 80 corridors to 4
to 7 inches near US 10.
From: Jan 25, 2026 01:40
Until: Jan 25, 2026 11:45
Winter Weather Advisory
* WHAT...Snow. Total snow accumulations of 2 to 3 inches.
* WHERE...Stark and Knox Counties.
* WHEN...Until 6 PM CST Sunday.
* IMPACTS...Plan on slippery road conditions tonight and through
tomorrow. Blowing and drifting snow is possible Sunday afternoon
and Sunday evening with north winds gusting 20 to 25 mph.
From: Jan 25, 2026 02:21
Until: Jan 25, 2026 10:15
Winter Weather Advisory
* WHAT...Snow. Total snow accumulations between 2 and 4 inches.
* WHERE...Marshall, Mason, McLean, Peoria, Tazewell, Woodford,
Fulton, and Schuyler Counties.
* WHEN...Until 6 PM CST Sunday.
* IMPACTS...Plan on slippery road conditions. Blowing and drifting
snow is possible Sunday afternoon and Sunday evening with north
winds gusting 20 to 25 mph.
From: Jan 25, 2026 02:21
Until: Jan 25, 2026 10:15
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 5 and
10 inches, with 10 to 12 inches possible from I-70 south.
* WHERE...Portions of central, east central, southeast, and west
central Illinois.
* WHEN...Until 9 PM CST Sunday.
* IMPACTS...Travel could be very difficult. Blowing and drifting
snow is possible Sunday afternoon and Sunday evening with north
winds gusting 20 to 25 mph.
From: Jan 24, 2026 19:51
Until: Jan 25, 2026 10:15
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 25 below expected.
* WHERE...Portions of central, east central, southeast, and west
central Illinois.
* WHEN...From midnight Sunday Night to noon CST Monday.
* IMPACTS...The dangerously cold wind chills as low as 25 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 24, 2026 19:47
Until: Jan 25, 2026 10:00
Winter Weather Advisory
* WHAT...Snow. Total snow accumulations between 2 and 4 inches.
* WHERE...Marshall, Mason, McLean, Peoria, Tazewell, Woodford,
Fulton, and Schuyler Counties.
* WHEN...Until 6 PM CST Sunday.
* IMPACTS...Plan on slippery road conditions.
From: Jan 24, 2026 19:51
Until: Jan 25, 2026 10:00
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches.
* WHERE...Portions of central, east central, north central, and
northeast Illinois.
* WHEN...From 6 PM this evening to 6 PM CST Sunday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
From: Jan 24, 2026 20:37
Until: Jan 25, 2026 06:45
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 2 and 5
inches, highest east of Interstate 55. Lower snow totals are
forecasted across northwestern portions of La Salle, Kendall, and
DuPage counties.
* WHERE...Portions of central, north central, and northeast Illinois.
* WHEN...From 6 PM this evening to 6 PM CST Sunday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
From: Jan 24, 2026 16:36
Until: Jan 25, 2026 02:45
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches.
* WHERE...Marshall, Mason, McLean, Peoria, Tazewell, Woodford,
Fulton, and Schuyler Counties.
* WHEN...From noon today to 6 PM CST Sunday.
* IMPACTS...Plan on slippery road conditions.
From: Jan 24, 2026 10:20
Until: Jan 24, 2026 22:00
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 5 and
10 inches, with 10 to 12 inches possible from I-70 south.
* WHERE...Portions of central, east central, southeast, and west
central Illinois.
* WHEN...From noon today to 9 PM CST Sunday.
* IMPACTS...Travel could be very difficult. Blowing and drifting
snow is possible Sunday afternoon and Sunday evening with north
winds gusting 20 to 25 mph.
From: Jan 24, 2026 10:20
Until: Jan 24, 2026 22:00
Hydrologic Outlook
ESFLOT
Cold temperatures this week have caused a significant increase in
river ice across the area, including multiple ice jams. Cold
temperatures are expected to continue into next week, with favorable
conditions for river ice formation. Areas of open river may see new
ice growth, while areas with existing ice cover my thicken.
No widespread flooding is expected, but ice jams will be possible in
isolated areas, especially along the Rock, Fox, and Kankakee rivers.
Ice jams may cause rises or fluctuations on area rivers with little
warning.
Persons with interests along area rivers should closely monitor the
latest forecasts.
From: Jan 23, 2026 20:20
Until: Jan 24, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 below.
* WHERE...Portions of central, east central, southeast, and west
central Illinois.
* WHEN...Until noon CST today.
* IMPACTS...The dangerously cold wind chills as low as 20 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 24, 2026 07:25
Until: Jan 24, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chill values of 15 to near 30 below zero.
* WHERE...Portions of north central, northwest, and west central
Illinois, east central, northeast, and southeast Iowa, and
northeast Missouri.
* WHEN...Until noon CST today.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 24, 2026 08:29
Until: Jan 24, 2026 16:30
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 25 to 30 below.
* WHERE...Portions of central, north central, and northeast Illinois.
* WHEN...Until 9 AM CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 25 to 30
below zero could cause frostbite on exposed skin in as little as
30 minutes.
From: Jan 23, 2026 20:52
Until: Jan 24, 2026 13:15
Cold Weather Advisory
* WHAT...Very cold wind chill values of 15 to 30 below zero.
* WHERE...Portions of north central, northwest, and west central
Illinois, east central, northeast, and southeast Iowa, and
northeast Missouri.
* WHEN...Until noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 23, 2026 23:05
Until: Jan 24, 2026 11:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 25 below expected.
* WHERE...Portions of central, east central, and west central
Illinois.
* WHEN...Until noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 20 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 23, 2026 17:53
Until: Jan 24, 2026 10:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 25 below expected.
* WHERE...Marshall, McLean, Peoria, Stark, Tazewell, Woodford,
Fulton, and Knox Counties.
* WHEN...Until noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 24 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 23, 2026 17:53
Until: Jan 24, 2026 10:00
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 3 and 5
inches.
* WHERE...Mason, McLean, Peoria, Tazewell, Woodford, Fulton, and
Schuyler Counties.
* WHEN...From 9 AM Saturday to midnight CST Sunday Night.
* IMPACTS...Plan on slippery road conditions.
From: Jan 23, 2026 08:27
Until: Jan 24, 2026 10:00
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 5 and
10 inches.
* WHERE...Portions of central, east central, southeast, and west
central Illinois.
* WHEN...From 9 AM Saturday to midnight CST Sunday Night.
* IMPACTS...Travel could be very difficult.
From: Jan 23, 2026 19:48
Until: Jan 24, 2026 10:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 30 below expected.
* WHERE...Portions of central, north central, and northeast Illinois.
* WHEN...Until 9 AM CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 10 to 30
minutes.
From: Jan 23, 2026 18:04
Until: Jan 24, 2026 04:15
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 30 below expected.
* WHERE...Portions of eastern Iowa, northwest Illinois, and
northeast Missouri.
* WHEN...Until noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
* ADDITIONAL DETAILS...Some sporadic wind chills below 30 below may
still occur along and north of Hwy 20 this afternoon and late
evening.
From: Jan 23, 2026 17:52
Until: Jan 24, 2026 02:00
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations between 5 and
9 inches.
* WHERE...Portions of central, east central, southeast, and west
central Illinois.
* WHEN...From 9 AM Saturday to midnight CST Sunday Night.
* IMPACTS...Travel could be very difficult.
From: Jan 23, 2026 08:27
Until: Jan 23, 2026 22:00
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
of 30 to 40 below zero expected. For the Cold Weather Advisory,
bitterly cold wind chills of 15 to 30 below zero expected.
* WHERE...Portions of central, north central, and northeast Illinois.
* WHEN...For the Extreme Cold Warning, until noon CST today. For the
Cold Weather Advisory, from noon today to 9 AM CST Saturday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as few as 10 minutes.
* ADDITIONAL DETAILS...Coldest wind chills are expected across
interior portions of northern Illinois.
From: Jan 23, 2026 09:01
Until: Jan 23, 2026 19:15
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
of 30 to 40 below zero expected. For the Cold Weather Advisory,
bitterly cold wind chills of 15 to 30 below zero expected.
* WHERE...Portions of central, north central, and northeast Illinois.
* WHEN...For the Extreme Cold Warning, until noon CST today. For the
Cold Weather Advisory, from noon today to 9 AM CST Saturday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as few as 10 minutes.
* ADDITIONAL DETAILS...Coldest wind chills are expected across
interior portions of northern Illinois.
From: Jan 23, 2026 09:01
Until: Jan 23, 2026 19:15
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 35 below. For the Cold Weather Advisory, very cold wind
chills as low as 25 below expected.
* WHERE...Portions of north central and northwest Illinois and east
central and southeast Iowa.
* WHEN...For the Extreme Cold Warning, until noon CST today. For the
Cold Weather Advisory, from noon today to noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 35 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
From: Jan 23, 2026 09:14
Until: Jan 23, 2026 17:15
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 35 below. For the Cold Weather Advisory, very cold wind
chills as low as 25 below expected.
* WHERE...Portions of north central and northwest Illinois and east
central and southeast Iowa.
* WHEN...For the Extreme Cold Warning, until noon CST today. For the
Cold Weather Advisory, from noon today to noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 35 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
From: Jan 23, 2026 09:14
Until: Jan 23, 2026 17:15
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 25 to 30 below expected. For the Cold Weather Advisory,
very cold wind chills as low as 20 below expected.
* WHERE...Marshall, McLean, Peoria, Stark, Tazewell, Woodford,
Fulton, and Knox Counties.
* WHEN...For the Extreme Cold Warning, until noon CST today. For the
Cold Weather Advisory, from noon today to noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 23, 2026 08:13
Until: Jan 23, 2026 16:15
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 25 to 30 below expected. For the Cold Weather Advisory,
very cold wind chills as low as 20 below expected.
* WHERE...Marshall, McLean, Peoria, Stark, Tazewell, Woodford,
Fulton, and Knox Counties.
* WHEN...For the Extreme Cold Warning, until noon CST today. For the
Cold Weather Advisory, from noon today to noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 23, 2026 08:13
Until: Jan 23, 2026 16:15
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 25 below expected.
* WHERE...Portions of central, east central, and west central
Illinois.
* WHEN...Until noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 25 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 23, 2026 08:13
Until: Jan 23, 2026 16:15
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 below to 25 below zero.
* WHERE...Portions of central, east central, north central, and
northeast Illinois.
* WHEN...Until noon CST today.
* IMPACTS...The dangerously cold wind chills as low as 25 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 19, 2026 09:03
Until: Jan 19, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 10 to 20 below zero.
* WHERE...Portions of central, east central, and west central
Illinois.
* WHEN...Until noon CST today.
* IMPACTS...The dangerously cold wind chills as low as 20 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 19, 2026 06:57
Until: Jan 19, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 to 30 below.
* WHERE...Portions of north central and northwest Illinois and east
central and southeast Iowa.
* WHEN...Until noon CST today.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
Frostbite and hypothermia will occur if unprotected skin is
exposed to these temperatures.
From: Jan 19, 2026 09:02
Until: Jan 19, 2026 17:15
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 below to 25 below zero
expected.
* WHERE...Portions of central, east central, north central, and
northeast Illinois.
* WHEN...From 3 AM to noon CST Monday.
* IMPACTS...The dangerously cold wind chills as low as 25 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 19, 2026 02:39
Until: Jan 19, 2026 12:45
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 to 30 below expected.
* WHERE...Portions of north central and northwest Illinois and east
central and southeast Iowa.
* WHEN...From 3 AM to noon CST Monday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in 30 minutes or less. Frostbite and hypothermia
will occur if unprotected skin is exposed to these temperatures.
From: Jan 19, 2026 02:47
Until: Jan 19, 2026 12:15
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 10 to 20 below expected
late tonight and Monday morning.
* WHERE...Portions of central, east central, and west central
Illinois.
* WHEN...From 3 AM to noon CST Monday.
* IMPACTS...The dangerously cold wind chills as low as 20 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 18, 2026 19:36
Until: Jan 19, 2026 10:00
Special Weather Statement
Strong northwest winds gusting to 40 to 45 mph will continue over
northwest and west central Illinois through 3 A.M. before
gradually easing. There will also be narrow corridors of snow
showers in parts of northwest and west central Illinois that will
lead to temporary sharply reduced visibility, including near I-74
in Henry County. Use caution if traveling, especially high profile
vehicles, and allow plenty of extra time to reach your
destination.
From: Jan 19, 2026 05:57
Until: Jan 19, 2026 09:00
Special Weather Statement
Strong northwest winds will develop late this evening and
overnight behind an arctic cold front, gusting up to 40 mph. In
addition, scattered wind-whipped snow showers will accompany this
front as it moves east across the region. The most robust snow
showers will result in localized sharply-reduced visibilities as
low as a half mile and quick additional snow accumulations of a
coating up to one inch.
From: Jan 19, 2026 03:40
Until: Jan 19, 2026 07:00
