Hazardous Weather Outlook for McHenry Co., IL

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

FLUS43 KLOT 090152
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
852 PM CDT Fri Aug 8 2025


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
852 PM CDT Fri Aug 8 2025 /952 PM EDT Fri Aug 8 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday and Sunday...
Limited Thunderstorm Risk...with an associated:
Level 2 of 5 Severe Thunderstorm Risk across northwestern
Illinois
Limited Flooding Risk.
Limited Excessive Heat Risk.
Monday through Wednesday...
Limited Thunderstorm Risk.
Limited Flooding Risk.

DISCUSSION...

Hot and humid conditions will continue area-wide on Saturday and
for portions of the area on Sunday.

Periodic showers and thunderstorms will move through the general
area this weekend and into next week. Many hours will remain dry,
and some areas may be missed entirely.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.


https://wxn.io/0nc9a

Hazardous Weather Outlook for McHenry Co., IL

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

FLUS43 KLOT 082014
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
314 PM CDT Fri Aug 8 2025


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
314 PM CDT Fri Aug 8 2025 /414 PM EDT Fri Aug 8 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

Limited Excessive Heat Risk.

DISCUSSION...

Heat indices in the 90s to around 100 degrees before sunset will
only drop to the 80s to around 90 degrees by late this evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday and Sunday...
Limited Thunderstorm Risk...with an associated:
Level 1 to 2 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Monday through Wednesday...
Limited Thunderstorm Risk.
Limited Flooding Risk.

DISCUSSION...

Hot and humid conditions will continue area-wide on Saturday and
for portions of the area on Sunday.

Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon
and evening for areas primarily near and west of the Fox River
Valley. Some afternoon and evening storms on Saturday and Sunday
could be strong to severe with a threat for locally damaging wind
gusts. In addition, torrential downpours in thunderstorms may
produce localized flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.


https://wxn.io/3lrkg

Hazardous Weather Outlook for McHenry Co., IL

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

FLUS43 KLOT 081718
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1218 PM CDT Fri Aug 8 2025


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1218 PM CDT Fri Aug 8 2025 /118 PM EDT Fri Aug 8 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

Limited Excessive Heat Risk this afternoon.

DISCUSSION...

Expect uncomfortable heat and humidity today with afternoon heat
indices in the middle 90s to near 100 degrees.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Sunday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.

DISCUSSION...

Hot and humid conditions will continue Saturday.

Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon and
evening. A few storms late Saturday afternoon and evening could be
strong to severe with a threat for locally damaging wind gusts,
mainly north and west of I-55.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.


https://wxn.io/lktuq

Hazardous Weather Outlook for McHenry Co., IL

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

FLUS43 KLOT 080843
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
343 AM CDT Fri Aug 8 2025


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
343 AM CDT Fri Aug 8 2025 /443 AM EDT Fri Aug 8 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

Limited Excessive Heat Risk this afternoon.

DISCUSSION...

Expect uncomfortable heat and humidity today with afternoon heat
indices in the middle 90s to near 100 degrees.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Sunday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.

DISCUSSION...

Hot and humid conditions will continue Saturday.

Periodic chances for showers and thunderstorms can be expected
this weekend into next week, beginning late Saturday afternoon and
evening. A few storms late Saturday afternoon and evening could be
strong to severe with a threat for locally damaging wind gusts,
mainly north and west of I-55.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.


https://wxn.io/h27c5

Hazardous Weather Outlook for McHenry Co., IL

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

FLUS43 KLOT 072328
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
628 PM CDT Thu Aug 7 2025


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
628 PM CDT Thu Aug 7 2025 /728 PM EDT Thu Aug 7 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

Limited Thunderstorm Risk.

DISCUSSION...

There is a 20 percent chance of a thunderstorm this evening and
overnight. Most areas will stay dry.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday Morning...
Limited Thunderstorm Risk.
Friday Afternoon through Saturday...
Limited Excessive Heat Risk.
Late Saturday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.

DISCUSSION...

Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 degrees likely.

Additional periods of thunderstorms are possible late day
Saturday through mid next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east southeast around 20 mph.


https://wxn.io/dr13m

Hazardous Weather Outlook for McHenry Co., IL

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

FLUS43 KLOT 072015
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
315 PM CDT Thu Aug 7 2025


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
315 PM CDT Thu Aug 7 2025 /415 PM EDT Thu Aug 7 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

Limited Thunderstorm Risk.
Limited Flooding Risk.

DISCUSSION...

There is a slight chance of thunderstorms this evening and
overnight. Any storms that develop will be capable of gusty winds
and torrential rainfall leading to localized flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday Morning...
Limited Thunderstorm Risk.
Friday Afternoon through Saturday...
Limited Excessive Heat Risk.
Late Saturday through Wednesday...
Limited Thunderstorm Risk at times.
Limited Flooding Risk at times.

DISCUSSION...

Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 degrees likely.

Additional periods of thunderstorms are possible late day Saturday
through mid next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is unlikely through tonight.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east southeast around 20 mph.


https://wxn.io/1r1cy

Hazardous Weather Outlook for McHenry Co., IL

C: Mchenrycountywx | L: Woodstock | PL: McHenry County WX

FLUS43 KLOT 071617
HWOLOT

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1117 AM CDT Thu Aug 7 2025


Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
1117 AM CDT Thu Aug 7 2025 /1217 PM EDT Thu Aug 7 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Level 1 of 5 Large Hail Risk...up to quarter size.
Limited Flooding Risk.

DISCUSSION...

There is a slight chance of thunderstorms this afternoon into
early this evening with a somewhat greater potential for storms
later this evening and overnight. Any storms that develop will be
capable of gusty to locally damaging winds and torrential rainfall
leading to localized flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday Morning...
Limited Thunderstorm Risk.
Friday and Saturday...
Limited Excessive Heat Risk.
Saturday night through Tuesday...
Limited Thunderstorm Risk.

DISCUSSION...

Hot and humid conditions are expected Friday and Saturday with
peak afternoon heat indices up to around 100 likely.

Additional periods of thunderstorms are possible Saturday night
through early next week.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed this afternoon and evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east southeast around 20 mph.


https://wxn.io/i932h