Wind Advisory
* WHAT...West winds 25 to 35 mph with gusts up to 45 mph.
* WHERE...Portions of north central and northeast Illinois and
northwest Indiana.
* WHEN...Until 4 PM CST /5 PM EST/ this afternoon.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Feb 20, 2026 18:00
Until: Feb 20, 2026 22:00
Wind Advisory
* WHAT...West winds 25 to 35 mph with gusts up to 45 mph.
* WHERE...Livingston, Ford, Iroquois, La Salle, Eastern Will,
Grundy, Kankakee, Kendall, Northern Will, Southern Cook, and
Southern Will Counties.
* WHEN...Until 4 PM CST this afternoon.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Feb 20, 2026 18:00
Until: Feb 20, 2026 22:00
Wind Advisory
* WHAT...West winds 20 to 25 mph with gusts up to 45 mph.
* WHERE...Portions of south central and southeast Wisconsin.
* WHEN...Until 3 PM CST this afternoon.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Feb 20, 2026 14:48
Until: Feb 20, 2026 21:00
Wind Advisory
* WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected.
* WHERE...Livingston, Ford, Iroquois, La Salle, Eastern Will,
Grundy, Kankakee, Kendall, Northern Will, Southern Cook, and
Southern Will Counties.
* WHEN...Until 4 PM CST this afternoon.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Feb 20, 2026 09:38
Until: Feb 20, 2026 18:30
Wind Advisory
* WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected.
* WHERE...Portions of north central and northeast Illinois and
northwest Indiana.
* WHEN...Until 4 PM CST /5 PM EST/ this afternoon.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Feb 20, 2026 09:38
Until: Feb 20, 2026 18:30
Wind Advisory
* WHAT...Northwest winds 20 to 30 mph with gusts up to 45 mph
expected.
* WHERE...Portions of south central and southeast Wisconsin.
* WHEN...From 6 AM to 3 PM CST Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* ADDITIONAL DETAILS...The highest wind gusts (around 45 mph) may
only last a few hours of this time window in any given area, but
when combined with the snowfall (particularly in the western half
of the advisory area), could further worsen travel conditions and
increase strain on tree branches.
From: Feb 20, 2026 06:02
Until: Feb 20, 2026 14:15
Wind Advisory
* WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected.
* WHERE...Livingston, Ford, Iroquois, La Salle, Eastern Will,
Grundy, Kankakee, Kendall, Northern Will, Southern Cook, and
Southern Will Counties.
* WHEN...From 1 AM to 4 PM CST Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Feb 20, 2026 02:19
Until: Feb 20, 2026 12:30
Wind Advisory
* WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected.
* WHERE...Portions of north central and northeast Illinois and
northwest Indiana.
* WHEN...From 6 AM CST /7 AM EST/ to 4 PM CST /5 PM EST/ Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Feb 20, 2026 02:19
Until: Feb 20, 2026 12:30
Special Weather Statement
ELEVATED FIRE WEATHER CONDITIONS EXPECTED FOR MUCH OF SOUTHERN WI...
Clearing skies during the day Wednesday will lead to strong mixing
and thus relative humidities are expected to plummet to 15-25%
with very breezy winds (gusts to 40mph). This will lead to an
increased concern for fire weather.
From: Feb 18, 2026 06:36
Until: Feb 19, 2026 00:00
Special Weather Statement
The combination of unseasonably warm temperatures, low relative
humidity and gusty westerly winds will lead to a heightened
threat of brush fire ignition and spread this afternoon.
Any fires that ignite may become difficult to control. Outdoor
burning is strongly discouraged.
From: Feb 18, 2026 07:08
Until: Feb 18, 2026 16:00
Red Flag Warning
The National Weather Service in Chicago has issued a Red Flag
Warning, which is in effect from 10 AM this morning to 8 PM CST
this evening. This replaces the Fire Weather Watch that was
previously in effect.
* Affected Area...Winnebago, Boone, McHenry, Ogle, Lee, De Kalb,
Kane, La Salle, Kendall and Grundy.
* Timing...From 10 AM this morning to 8 PM CST this evening.
* Winds...West 20 to 30 mph with gusts up to 40 to 45 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 07:00
Until: Feb 18, 2026 15:00
Fire Weather Watch
...A FIRE WEATHER WATCH IS IN EFFECT FOR WEDNESDAY...
The combination of unseasonably warm temperatures (highs in the
60s), dry conditions (RH values around 15-25%), and gusty west-
southwest winds (gusting around 35-40 mph) will lead to an
elevated fire danger on Wednesday. While fuel moistures may be
more questionable in some areas, local fire agencies indicate
that finer fuels are primed and could lead to rapid fire spread
in these conditions. For this reason, a Fire Weather Watch has
been issued for portions of northern Illinois on Wednesday.
Confidence in Red Flag Warning criteria being met is currently
highest along and north of Interstate 88.
* Affected Area...Winnebago, Boone, McHenry, Lake IL, Ogle, Lee,
De Kalb, Kane, DuPage, Cook, La Salle, Kendall, Grundy and
Will.
* Timing...From 9 AM CST Wednesday through Wednesday evening.
* Winds...Southwest 15 to 25 mph with gusts up to 40 to 45 mph.
* Relative Humidity...As low as 15 percent.
* Impacts...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
From: Feb 18, 2026 03:32
Until: Feb 18, 2026 11:45
Special Weather Statement
Freezing drizzle and mist will continue across far northern
Illinois this morning, ending from west to east between 3 and 5
AM. Untreated surfaces such as roads, overpasses, sidewalks,
parking lots, and driveways will be icy where the freezing mist
and drizzle is most prevalent. This includes across the Rockford
metropolitan area.
Pedestrians and motorists should use caution when walking or
driving on untreated surfaces this morning, even after the
freezing drizzle and mist ends.
From: Feb 02, 2026 07:07
Until: Feb 02, 2026 13:00
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...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...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 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
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
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
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
as low as 40 below. For the Cold Weather Advisory, very cold wind
chills as low as 30 below expected.
* WHERE...Portions of south central and southeast Wisconsin.
* WHEN...For the Extreme Cold Warning, until 1 PM CST this
afternoon. For the Cold Weather Advisory, from 1 PM this afternoon
to noon CST Saturday.
* IMPACTS...Dangerously cold wind chills could cause frostbite on
exposed skin in as little as 10 minutes.
From: Jan 23, 2026 09:14
Until: Jan 23, 2026 18:00
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 40 below. For the Cold Weather Advisory, very cold wind
chills as low as 30 below expected.
* WHERE...Portions of south central and southeast Wisconsin.
* WHEN...For the Extreme Cold Warning, until 1 PM CST this
afternoon. For the Cold Weather Advisory, from 1 PM this afternoon
to noon CST Saturday.
* IMPACTS...Dangerously cold wind chills could cause frostbite on
exposed skin in as little as 10 minutes.
From: Jan 23, 2026 09:14
Until: Jan 23, 2026 18:00
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, 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
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
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
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 30 to 35 below zero expected. For the Cold Weather
Advisory, very cold wind chills as low as 15 to 30 below 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...Dangerously cold wind chills could cause frostbite on
exposed skin in as little as 10 minutes.
From: Jan 22, 2026 17:24
Until: Jan 23, 2026 06:30
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 30 to 40 below zero expected. For the Cold Weather
Advisory, very cold wind chills as low as 15 to 30 below 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...Dangerously cold wind chills 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 17:24
Until: Jan 23, 2026 06:30
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 30 to 35 below zero expected. For the Cold Weather
Advisory, very cold wind chills as low as 15 to 30 below 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...Dangerously cold wind chills could cause frostbite on
exposed skin in as little as 10 minutes.
From: Jan 22, 2026 17:24
Until: Jan 23, 2026 06:30
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 30 to 40 below zero expected. For the Cold Weather
Advisory, very cold wind chills as low as 15 to 30 below 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...Dangerously cold wind chills 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 17:24
Until: Jan 23, 2026 06:30
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 35 to 42 degrees below zero expected. For the Cold
Weather Advisory, very cold wind chills as low as 20 to 29 degrees
below zero expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...For the Extreme Cold Warning, from midnight tonight to 1 PM
CST Friday. For the Cold Weather Advisory, from 1 PM Friday to
noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 40 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
* ADDITIONAL DETAILS...A few areas may see continued wind chills at
or below negative 30 degrees into Friday afternoon/evening.
Localized extensions to the Extreme Cold Warning may be needed.
From: Jan 22, 2026 20:24
Until: Jan 23, 2026 04:30
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 35 to 42 degrees below zero expected. For the Cold
Weather Advisory, very cold wind chills as low as 20 to 29 degrees
below zero expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...For the Extreme Cold Warning, from midnight tonight to 1 PM
CST Friday. For the Cold Weather Advisory, from 1 PM Friday to
noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 40 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
* ADDITIONAL DETAILS...A few areas may see continued wind chills at
or below negative 30 degrees into Friday afternoon/evening.
Localized extensions to the Extreme Cold Warning may be needed.
From: Jan 22, 2026 20:24
Until: Jan 23, 2026 04:30
Extreme Cold Warning
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 35 to 42 below zero expected. For the Cold Weather
Advisory, very cold wind chills as low as 20 to 29 below zero
expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...For the Extreme Cold Warning, from midnight tonight to 1 PM
CST Friday. For the Cold Weather Advisory, from 1 PM Friday to
noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 40 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
From: Jan 22, 2026 16:14
Until: Jan 23, 2026 00:15
Cold Weather Advisory
* WHAT...For the Extreme Cold Warning, dangerously cold wind chills
as low as 35 to 42 below zero expected. For the Cold Weather
Advisory, very cold wind chills as low as 20 to 29 below zero
expected.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...For the Extreme Cold Warning, from midnight tonight to 1 PM
CST Friday. For the Cold Weather Advisory, from 1 PM Friday to
noon CST Saturday.
* IMPACTS...The dangerously cold wind chills as low as 40 below zero
could cause frostbite on exposed skin in as little as 10 minutes.
From: Jan 22, 2026 16:14
Until: Jan 23, 2026 00:15
Special Weather Statement
Water freezing on roads, along with patchy fog that may freeze on
surfaces, may cause some slick spots and black ice tonight into
Thursday morning. Untreated and secondary roads would be the most
vulnerable areas, along with bridges and overpasses. Slow down and
drive carefully into Thursday morning, and allow for extra
stopping distance between vehicles.
From: Jan 08, 2026 05:05
Until: Jan 08, 2026 15:00
