Winter Storm Warning
* WHAT...Heavy lake effect snow with total snow accumulations over 6
inches expected, mainly near and north of US Route 30. Isolated
totals up to a foot are possible.
* WHERE...Lake IN and Porter Counties.
* WHEN...Until 6 PM CST Saturday.
* IMPACTS...Travel could be very difficult to nearly impossible at
times north of U.S. Route 30 with near white out conditions and
snowfall rates of 2 or more inches per hour under the most intense
portions of the band.
* ADDITIONAL DETAILS...The Heaviest snowfall is expected late this
evening through Saturday morning, when locally 2 inch per hour
rates are expected at times. Some breaks in the snowfall are
possible at times as the snow band wobbles tonight and Saturday.
From: Jan 31, 2026 03:01
Until: Jan 31, 2026 13:15
Winter Weather Advisory
* WHAT...Lake effect snow expected. Total snow accumulations could
locally exceed 4 inches, especially near the Illinois-Indiana
stateline.
* WHERE...Eastern Will County.
* WHEN...From 6 AM to 4 PM CST Saturday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...The band of snow is expected to shift back
westward into parts of northeastern Illinois Saturday morning, and
this could result in additional localized accumulations and travel
impacts.
From: Jan 31, 2026 03:01
Until: Jan 31, 2026 13:15
Winter Weather Advisory
* WHAT...Lake effect snow expected Saturday morning. Total snow
accumulations could locally exceed 3 inches, especially near the
lake.
* WHERE...Northern Cook County.
* WHEN...From 6 AM to 4 PM CST Saturday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...The band of snow is expected to shift back
westward into parts of northeastern Illinois Saturday morning.
This will likely result in additional localized accumulations and
travel impacts.
From: Jan 31, 2026 03:01
Until: Jan 31, 2026 13:15
Winter Weather Advisory
* WHAT...Lake effect snow expected Saturday morning. Total snow
accumulations could locally exceed 3 inches, especially near the
lake.
* WHERE...Central Cook and Southern Cook Counties.
* WHEN...From 6 AM to 4 PM CST Saturday.
* IMPACTS...Localized hazardous travel is expected on Saturday
especially near the lake.
* ADDITIONAL DETAILS...A band of lake effect snow is expected to
shift back westward Saturday morning, and is expected to impact
parts of northeastern Illinois on Saturday. While the footprint of
accumulating snow is likely to be lower, localized additional
accumulations and associated travel impacts are expected.
From: Jan 31, 2026 03:01
Until: Jan 31, 2026 13:15
Winter Storm Warning
* WHAT...Heavy lake effect snow with total snow accumulations over 6
inches expected, mainly near and north of US Route 30. Isolated
totals up to a foot are possible.
* WHERE...Lake IN and Porter Counties.
* WHEN...From 6 PM this evening to 6 PM CST Saturday.
* IMPACTS...Travel could be very difficult to nearly impossible at
times north of U.S. Route 30 with near white out conditions and
snowfall rates of 2 or more inches per hour under the most intense
portions of the band.
* ADDITIONAL DETAILS...The Heaviest snowfall is expected late this
evening through Saturday morning, when locally 2 inch per hour
rates are expected at times. Some breaks in the snowfall are
possible at times as the snow band wobbles tonight and Saturday.
From: Jan 30, 2026 19:42
Until: Jan 31, 2026 05:45
Winter Storm Warning
* WHAT...For the Winter Storm Warning through this evening, heavy
lake effect snow. Snow accumulations locally in excess of 6
inches, particularly near the lake. For the Winter Weather
Advisory on Saturday, another round of lake effect snow, with
additional localized accumulations in excess of 3 inches possible.
* WHERE...Central Cook and Southern Cook Counties.
* WHEN...For the Winter Storm Warning, until midnight CST tonight.
For the Winter Weather Advisory, from 6 AM to 4 PM CST Saturday.
* IMPACTS...Travel will remain hazardous at times into this evening,
particularly near the lake. Additional localized adverse impacts
to travel are likely at times on Saturday.
* ADDITIONAL DETAILS...Accumulating lake effect snow will continue
into this evening, and will fall locally at 1 to 2 inch per hour
rates at times, making for hazardous travel conditions. This will
particularly be the case for areas in close proximity to the lake.
This intense band of lake effect snow is expected to shift
eastward into northwestern Indiana late this evening and
overnight, thus resulting in a several hour break in accumulating
snow across Cook county overnight. However, the band is expected
to shift back westward Saturday morning, and is expected to impact
parts of northeastern Illinois on Saturday. While the footprint of
accumulating snow is likely to be lower on Saturday, localized
additional accumulations and associated travel impacts are
expected.
From: Jan 30, 2026 19:42
Until: Jan 31, 2026 05:45
Winter Weather Advisory
* WHAT...Two periods of accumulating lake effect snow expected.
Total snow accumulations could locally exceed 4 inches,
particularly near the Indiana state line.
* WHERE...Eastern Will County.
* WHEN...For the first Winter Weather Advisory, from 6 PM this
evening to midnight CST tonight. For the second Winter Weather
Advisory, from 6 AM to 4 PM CST Saturday.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Lake effect snow is expected to impact the
area in two waves. The first will occur through this evening,
before the lake effect band shifts east into Indiana for a period
tonight. The band of snow is then expected to shift back westward
into parts of northeastern Illinois Saturday morning, and this
could result in additional localized accumulations and travel
impacts.
From: Jan 30, 2026 19:42
Until: Jan 31, 2026 05:45
Winter Weather Advisory
* WHAT...Two periods of accumulating lake effect snow expected.
Total snow accumulations could locally exceed 5 inches,
particularly near the lake.
* WHERE...Northern Cook County.
* WHEN...For the first Winter Weather Advisory, until 8 PM CST this
evening. For the second Winter Weather Advisory, from 6 AM to 4 PM
CST Saturday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. The hazardous conditions will
impact this evenings commute.
* ADDITIONAL DETAILS...Lake effect snow is expected to impact the
area in two waves. The first will persist through this evening,
before the lake effect band shifts east into Indiana for a period
overnight. The band of snow is then expected to shift back
westward into parts of northeastern Illinois Saturday morning.
This will likely result in additional localized accumulations and
travel impacts.
From: Jan 30, 2026 19:42
Until: Jan 31, 2026 05:45
Winter Weather Advisory
* WHAT...For the Winter Storm Warning through this evening, heavy
lake effect snow. Snow accumulations locally in excess of 6
inches, particularly near the lake. For the Winter Weather
Advisory on Saturday, another round of lake effect snow, with
additional localized accumulations in excess of 3 inches possible.
* WHERE...Central Cook and Southern Cook Counties.
* WHEN...For the Winter Storm Warning, until midnight CST tonight.
For the Winter Weather Advisory, from 6 AM to 4 PM CST Saturday.
* IMPACTS...Travel will remain hazardous at times into this evening,
particularly near the lake. Additional localized adverse impacts
to travel are likely at times on Saturday.
* ADDITIONAL DETAILS...Accumulating lake effect snow will continue
into this evening, and will fall locally at 1 to 2 inch per hour
rates at times, making for hazardous travel conditions. This will
particularly be the case for areas in close proximity to the lake.
This intense band of lake effect snow is expected to shift
eastward into northwestern Indiana late this evening and
overnight, thus resulting in a several hour break in accumulating
snow across Cook county overnight. However, the band is expected
to shift back westward Saturday morning, and is expected to impact
parts of northeastern Illinois on Saturday. While the footprint of
accumulating snow is likely to be lower on Saturday, localized
additional accumulations and associated travel impacts are
expected.
From: Jan 30, 2026 19:42
Until: Jan 31, 2026 05:45
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 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 16:05
Until: Jan 26, 2026 12:00
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...From midnight CST /1 AM EST/ tonight to noon CST /1 PM EST/
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 26, 2026 01:57
Until: Jan 26, 2026 12:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 25 below expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* 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 26, 2026 02:00
Until: Jan 26, 2026 10:00
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...From midnight CST 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 16:05
Until: Jan 26, 2026 07:00
Winter Weather Advisory
* WHAT...Snow, heavy at times this afternoon and early evening. An
additional 2 to 4 inches of snow will fall near the lake ranging
to around an inch near the Kankakee River.
* WHERE...Lake IN County.
* WHEN...Until midnight CST tonight.
* IMPACTS...Roads will be snow covered and travel hazardous.
From: Jan 25, 2026 18:24
Until: Jan 26, 2026 04:30
Winter Weather Advisory
* WHAT...Snow will end this afternoon with additional accumulation
generally an inch or less.
* WHERE...Lake IL County.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Roads will be snow covered and travel hazardous.
From: Jan 25, 2026 18:24
Until: Jan 26, 2026 00:00
Winter Weather Advisory
* WHAT...Snow. Additional snow accumulations up to one
inch.Visibility may occasionally drop below 1 mile, particularly
during the day on Sunday.
* WHERE...Portions of central, east central, north central, and
northeast Illinois.
* WHEN...Until 6 PM CST this evening.
* IMPACTS...Roads will be snow covered and travel hazardous.
From: Jan 25, 2026 18:24
Until: Jan 26, 2026 00:00
Cold Weather Advisory
* WHAT...Very cold wind chills as low as 26 below expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* 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 15:43
Until: Jan 25, 2026 23:45
Winter Storm Warning
* WHAT...Snow, heavy at times, will end from north to south this
afternoon. Additional snowfall of an inch or two northern Cook
County ranging to 2 to 4 additional inches over southeast Cook
County. Storm total snowfall will range from 2 to 4 inches
northwest Cook County to 6 to 12 inches near the lake.
* WHERE...Central Cook, Northern Cook, and Southern Cook Counties.
* WHEN...Until 4 PM CST this afternoon.
* IMPACTS...Travel will remain hazardous into this afternoon.
From: Jan 25, 2026 18:24
Until: Jan 25, 2026 22:00
Winter Weather Advisory
* WHAT...Lake effect snow. Additional snow accumulations up to 3
inches for a snowfall total up to 5 inches over eastern portions
of the county. Locally higher totals possible along the immediate
Lake Michigan shoreline.
* WHERE...Kenosha County.
* WHEN...Until 3 PM CST this afternoon.
* IMPACTS...Plan on slippery road conditions.
From: Jan 25, 2026 15:28
Until: Jan 25, 2026 21:00
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...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...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 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
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 26 below expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...From midnight tonight to noon CST Monday.
* IMPACTS...The dangerously cold wind chills as low as 26 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
From: Jan 25, 2026 08:29
Until: Jan 25, 2026 18:00
Winter Weather Advisory
* WHAT...Lake effect snow expected. Total snow accumulations of 2 to
4 inches over far eastern Kenosha County. Locally higher totals
possible along the immediate Lake Michigan shoreline.
* WHERE...Kenosha County.
* WHEN...Until 3 PM CST this afternoon.
* IMPACTS...Plan on slippery road conditions.
From: Jan 25, 2026 08:27
Until: Jan 25, 2026 18:00
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...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...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...Lake effect snow expected. Total snow accumulations of 2 to
4 inches over far eastern Kenosha County.
* WHERE...Kenosha County.
* WHEN...From 6 AM to 3 PM CST Sunday.
* IMPACTS...Plan on slippery road conditions.
From: Jan 25, 2026 02:46
Until: Jan 25, 2026 11:00
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 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 25, 2026 06:45
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 1 and 6
inches, lowest totals over western portions of Lake County and far
northwest Cook County. Isolated totals over 6 inches possible.
* 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.
* ADDITIONAL DETAILS...Snowfall amounts in the advisory area could
vary significantly over short distances due to the nature of lake
effect snow. Heaviest snowfall rates are expected during the
morning into the early-mid afternoon on Sunday.
From: Jan 24, 2026 20:37
Until: Jan 25, 2026 06:45
Winter Weather Advisory
* WHAT...Lake effect snow expected, with snow accumulations of 2 to
4 inches. Local accumulations up to 6 inches possible at points
nearest Lake Michigan.
* WHERE...Kenosha and Racine Counties.
* WHEN...From 6 AM to 3 PM CST Sunday.
* IMPACTS...Plan on slippery road conditions.
From: Jan 24, 2026 20:00
Until: Jan 25, 2026 05:00
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
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 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
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 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
