Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 below expected, mainly
inland from the lake.
* WHERE...Lake IN and Porter Counties.
* 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 26, 2026 08:33
Until: Jan 26, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 to 25 below expected.
* WHERE...Portions of central, east central, north central, and
northeast Illinois and northwest Indiana.
* WHEN...Until noon CST /1 PM EST/ 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 26, 2026 08:33
Until: Jan 26, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 below expected.
* WHERE...Central Cook County.
* 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 26, 2026 08:33
Until: Jan 26, 2026 18:00
Winter Weather Advisory
* WHAT...Snow. Total snow accumulations between 2 and 5 inches,
highest east of Interstate 55 and south of Interstate 80.
* WHERE...Portions of central, east central, north central, and
northeast Illinois.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
From: Jan 25, 2026 09:55
Until: Jan 25, 2026 20:00
Winter Weather Advisory
* WHAT...Snow. Total snow accumulations between 3 and 7 inches.
Locally higher totals possible in portions of Porter County.
* WHERE...Lake IN and Porter Counties.
* WHEN...Until midnight CST tonight.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
From: Jan 25, 2026 09:55
Until: Jan 25, 2026 20:00
Winter Weather Advisory
* WHAT...Lake effect snow. Total snow accumulations between 1 and 6
inches, lowest totals over western portions of Lake County and
northwest Cook County. Isolated totals over 6 inches possible
within a few miles of the lakeshore.
* WHERE...Central Cook, Lake IL, and Northern Cook Counties.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
From: Jan 25, 2026 09:55
Until: Jan 25, 2026 20:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 below expected, mainly
inland from the lake.
* WHERE...Porter County.
* WHEN...From midnight tonight 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 25, 2026 08:35
Until: Jan 25, 2026 18:45
Cold Weather Advisory
* WHAT...Very cold wind chills around 20 below expected.
* WHERE...Central Cook County.
* WHEN...From midnight tonight 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 25, 2026 08:35
Until: Jan 25, 2026 18:45
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 to 25 below expected.
* WHERE...Portions of central, east central, north central, and
northeast Illinois.
* WHEN...From midnight tonight 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 25, 2026 08:35
Until: Jan 25, 2026 18:45
Cold Weather Advisory
* WHAT...Very cold wind chills around 20 below expected.
* WHERE...Benton, Jasper, Lake IN, and Newton Counties.
* WHEN...From midnight CST /1 AM EST/ tonight to noon CST /1 PM EST/
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 25, 2026 08:35
Until: Jan 25, 2026 18:45
Winter Weather Advisory
* WHAT...Hazardous travel conditions due to snow occurring.
* WHERE...Lake IN and Porter Counties.
* WHEN...Until midnight CST Sunday Night.
* IMPACTS...Roads, bridges, and overpasses, will be slick and
hazardous, including the Interstate 80, 90, and 94 corridor.
Visibility may occasionally drop below 1 mile, particularly Sunday
afternoon.
* ADDITIONAL DETAILS...Steady snow overnight will transition into
localized lake effect snow Sunday afternoon. Total snow
accumulations will range from around 3 inches near the Kankakee
River Valley to locally 6 inches within a few miles of the Lake
Michigan shoreline.
From: Jan 25, 2026 01:40
Until: Jan 25, 2026 11:45
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...Hazardous travel conditions due to snow occurring.
* WHERE...Central Cook, Lake IL, and Northern Cook Counties.
* WHEN...Until 6 PM CST Sunday.
* IMPACTS...Roads, bridges, and overpasses, will be slick and
hazardous. Visibility may occasionally drop below 1 mile,
particularly during the day on Sunday.
* ADDITIONAL DETAILS...Steady snow overnight will transition into
localized lake effect snow by daybreak Sunday. As a result, total
snow accumulations will vary across the impacted counties with
around an inch near and west of Interstate 94/294, and localized
totals up to 6 inches along the immediate Lake Michigan shoreline.
From: Jan 25, 2026 01:40
Until: Jan 25, 2026 11:45
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 3 and 5
inches.
* WHERE...Lake IN and Porter Counties.
* WHEN...From 6 PM this evening to midnight CST Sunday Night.
* 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 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 07:51
Until: Jan 25, 2026 02:45
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 2 and 6
inches, highest within a few miles of the lakeshore. Lower snow
totals are forecasted across western portions of Lake and northern
Cook counties.
* WHERE...Central Cook, Lake IL, and Northern Cook Counties.
* 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 07:51
Until: Jan 25, 2026 02:45
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
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 3 and 6
inches.
* WHERE...Lake IN and Porter Counties.
* WHEN...From 6 PM this evening to midnight CST Sunday Night.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
From: Jan 24, 2026 07:51
Until: Jan 24, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 to 25 below this morning.
* WHERE...In Illinois, Ford and Iroquois Counties. In Indiana,
Benton, Jasper, Lake IN, Newton, and Porter Counties.
* WHEN...Until noon CST /1 PM EST/ today.
* IMPACTS...The dangerously cold wind chills as low as 20 to 25
below zero could cause frostbite on exposed skin in as little as
30 minutes.
From: Jan 24, 2026 07:58
Until: Jan 24, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 to 30 below this morning.
* WHERE...Central Cook County.
* 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 10 to 30
minutes.
From: Jan 24, 2026 07:58
Until: Jan 24, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 25 to 30 below this morning.
* WHERE...Portions of central, north central, and northeast Illinois.
* WHEN...Until noon CST today.
* 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 24, 2026 07:58
Until: Jan 24, 2026 18:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 15 to 30 below expected.
* WHERE...Central Cook County.
* 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 13:15
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 24, 2026 03:12
Until: Jan 24, 2026 13:15
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 20 to 25 below.
* WHERE...In Illinois, Ford and Iroquois Counties. In Indiana,
Benton, Jasper, Lake IN, Newton, and Porter Counties.
* WHEN...Until 9 AM CST /10 AM EST/ Saturday.
* IMPACTS...The dangerously cold wind chills as low as 20 to 25
below zero could cause frostbite on exposed skin in as little as
30 minutes.
From: Jan 24, 2026 03:12
Until: Jan 24, 2026 13:15
Special Weather Statement
Lake effect snow showers persist over northern portions of Porter
County. With very cold temperatures, the light and fluffy nature
of snowfall will result in snow covered roads, sharply-reduced
visibilities, and slick travel conditions, particularly along and
near the I-90 and I-94 corridors in northern Porter County. Snow
showers will diminish from east to west across the county through
roughly daybreak.
Motorists should use caution if traveling across northern Porter
County. Slow down in snow, add extra stopping distance, and give
yourself extra time to reach your destination.
From: Jan 24, 2026 08:53
Until: Jan 24, 2026 13:00
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...Bitterly cold wind chills of 15 to 30 below zero expected.
* WHERE...In Illinois, Ford and Iroquois Counties. In Indiana,
Benton, Jasper, Lake IN, Newton, and Porter Counties.
* WHEN...Until 9 AM CST /10 AM EST/ Saturday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as few as 10 to 30 minutes.
From: Jan 23, 2026 09:01
Until: Jan 24, 2026 04:15
Special Weather Statement
Lake effect snow showers will persist over portions of
northeastern Porter County this afternoon. With very cold
temperatures, the light and fluffy nature of snowfall will result
in snow-coated roads, sharply-reduced visibilities, and slick
travel conditions, particularly east of Chesterton.
Motorists should use caution if traveling across northeast Porter
County. Slow down in snow, add extra stopping distance, and give
yourself extra time to reach your destination.
From: Jan 23, 2026 17:59
Until: Jan 24, 2026 00:00
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
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
of 30 to 35 below zero expected. For the Cold Weather Advisory,
bitterly cold wind chills of 15 to 30 below zero expected.
* WHERE...Central Cook County.
* 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.
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 35 below zero expected. For the Cold Weather Advisory,
bitterly cold wind chills of 15 to 30 below zero expected.
* WHERE...Central Cook County.
* 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.
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
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, from 3 AM to noon CST Friday.
For the Cold Weather Advisory, from noon Friday to 9 AM CST
Saturday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as few as 10 minutes.
From: Jan 23, 2026 02:45
Until: Jan 23, 2026 12:45
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
of 30 to 35 below zero expected. For the Cold Weather Advisory,
bitterly cold wind chills of 15 to 30 below zero expected.
* WHERE...Central Cook County.
* WHEN...For the Extreme Cold Warning, from 3 AM to noon CST Friday.
For the Cold Weather Advisory, from noon Friday to 9 AM CST
Saturday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as few as 10 minutes.
From: Jan 23, 2026 02:45
Until: Jan 23, 2026 12:45
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
of 30 to 35 below zero expected. For the Cold Weather Advisory,
bitterly cold wind chills of 15 to 30 below zero expected.
* WHERE...Central Cook County.
* WHEN...For the Extreme Cold Warning, from 3 AM to noon CST Friday.
For the Cold Weather Advisory, from noon Friday to 9 AM CST
Saturday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as few as 10 minutes.
From: Jan 23, 2026 02:45
Until: Jan 23, 2026 12:45
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, from 3 AM to noon CST Friday.
For the Cold Weather Advisory, from noon Friday to 9 AM CST
Saturday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as few as 10 minutes.
From: Jan 23, 2026 02:45
Until: Jan 23, 2026 12:45
Cold Weather Advisory
* WHAT...Bitterly cold wind chills of 15 to 30 below zero expected.
* WHERE...In Illinois, Ford and Iroquois Counties. In Indiana,
Benton, Jasper, Lake IN, Newton, and Porter Counties.
* WHEN...From 3 AM CST /4 AM EST/ Friday to 9 AM CST /10 AM EST/
Saturday.
* IMPACTS...The dangerously cold wind chills could cause frostbite
on exposed skin in as few as 10 to 30 minutes.
From: Jan 23, 2026 02:45
Until: Jan 23, 2026 12:45
Extreme Cold Warning
* WHAT...Dangerously cold wind chills between 30 and 40 below
expected.
* WHERE...Portions of central, north central, and northeast Illinois.
* WHEN...From 3 AM to noon CST Friday.
* IMPACTS...Dangerously cold wind chills as low as 35 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
* ADDITIONAL DETAILS...Coldest wind chills are expected across
interior portions of northern Illinois.
From: Jan 22, 2026 09:12
Until: Jan 22, 2026 19:15
Extreme Cold Warning
* WHAT...Dangerously cold wind chills as low as 30 below expected.
* WHERE...Central Cook County.
* WHEN...From 3 AM to noon CST Friday.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
From: Jan 22, 2026 09:12
Until: Jan 22, 2026 19:15
Cold Weather Advisory
* WHAT...Very cold wind chills between 20 and 30 below expected.
* WHERE...In Illinois, Ford and Iroquois Counties. In Indiana,
Benton, Jasper, Lake IN, Newton, and Porter Counties.
* WHEN...From 3 AM CST /4 AM EST/ to noon CST /1 PM EST/ Friday.
* 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 22, 2026 09:12
Until: Jan 22, 2026 19:15
Extreme Cold Watch
* WHAT...Dangerously cold wind chills as low as 35 below possible.
* WHERE...Portions of north central and northeast Illinois.
* WHEN...From late tonight through Friday morning.
* 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 22, 2026 06:03
Until: Jan 22, 2026 16:15
Extreme Cold Watch
* WHAT...Dangerously cold wind chills as low as 30 to 35 below
possible.
* WHERE...Portions of central, north central, and northeast Illinois.
* WHEN...From late Thursday night through Friday morning.
* 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 21, 2026 09:01
Until: Jan 21, 2026 19:15
