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Elev 774 ft, 42.27 °N, 88.2 °W

Island Lake, IL Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Island Lake, IL
Elevation: 774ft
Nearby Weather Stations

Active Weather Alerts

Flood Warning
Issued: 7:22 PM Apr. 27, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...A portion of northeast Illinois, including the following
counties, Lake IL and McHenry.

* WHEN...Until further notice.

* IMPACTS...Numerous roads, yards, structures, and areas of park
land are flooding along the Fox River Chain of Lakes. Flooding is
expected to continue at least through the end of this week.

* ADDITIONAL DETAILS...
- At 216 PM CDT, River gauges along the Fox River Chain of
Lakes indicated that water levels continue to slowly fall,
with water levels just above moderate flood stage.
- The latest forecast from the Illinois Department of Natural
Resources indicates that water levels should continue to
slowly fall this week. Water levels may near flood stage by
this weekend.
- Some locations that will experience flooding include areas
along the Fox River Chain of Lakes, including Nippersink
Lake, Fox Lake, Pistakee Lake, Petite Lake, Lake Marie,
Channel Lake, and Lake Catherine.
- http://www.weather.gov/safety/flood

&&



High Wind Warning
Issued: 5:50 PM Apr. 27, 2026 – National Weather Service
...HIGH WIND WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

* WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph.

* WHERE...De Kalb, Central Cook, DuPage, Kane, Lake IL, McHenry, and
Northern Cook Counties.

* WHEN...Until 4 PM CDT this afternoon.

* IMPACTS...Damaging winds will blow down trees and power lines.
Widespread power outages are expected. Travel will be difficult,
especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and
avoid windows. Watch for falling debris and tree limbs. Use caution
if you must drive.

&&

River Flood Warning
Issued: 5:10 PM Apr. 27, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.

* WHERE...Fox River from Johnsburg downstream to Red Gate Road in
St. Charles, including the Algonquin Lock & Dam tailwater gauge.

* WHEN...Until further notice.

* IMPACTS...At 11.5 feet, Residences threatened along Oceola Drive
in Algonquin. A few residences threatened along McBridge Street in
Elgin. Jayne Street and Beach Drive threatened in Algonquin. River
Street threatened in East Dundee. Jerusha Avenue threatened in
Elgin. Fox River Trail threatened between East Dundee and Elgin.

* ADDITIONAL DETAILS...
- At 11:30 AM CDT Monday the stage was 11.7 feet.
- Recent Activity...The river has been falling slowly over the
last few days.
- Forecast...The rate of fall may slow over the next few days
due to forecasted rainfall.
- Flood stage is 9.5 feet.
- http://www.weather.gov/safety/flood

&&



Small Craft Advisory
Issued: 5:01 PM Apr. 27, 2026 – National Weather Service
...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 10 AM CDT TUESDAY...

* WHAT...For the Gale Warning, southeast winds to 40 kt and
significant waves to 7 ft occasionally to 9 ft. For the Small
Craft Advisory, south to southwest winds to 30 kt and
significant waves to 7 ft occasionally to 9 ft expected.

* WHERE...Winthrop Harbor to Calumet Harbor IL.

* WHEN...For the Gale Warning, until 7 PM CDT this evening. For
the Small Craft Advisory, from 7 PM this evening to 10 AM CDT
Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

Gale Warning
Issued: 5:01 PM Apr. 27, 2026 – National Weather Service
...GALE WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 10 AM CDT TUESDAY...

* WHAT...For the Gale Warning, southeast winds to 40 kt and
significant waves to 7 ft occasionally to 9 ft. For the Small
Craft Advisory, south to southwest winds to 30 kt and
significant waves to 7 ft occasionally to 9 ft expected.

* WHERE...Winthrop Harbor to Calumet Harbor IL.

* WHEN...For the Gale Warning, until 7 PM CDT this evening. For
the Small Craft Advisory, from 7 PM this evening to 10 AM CDT
Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

River Flood Warning
Issued: 3:21 PM Apr. 27, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL SUNDAY MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Fox River Lower near New Munster.

* WHEN...Until Sunday morning.

* IMPACTS...At 12.0 feet, Water is up to the first floor levels of
some homes in the Town of Wheatland and Village of Salem Lakes
area along Riverside Drive and Shorewood Drive.

* ADDITIONAL DETAILS...
- At 10:00 AM CDT Monday the stage was 12.4 feet.
- Bankfull stage is 10.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 10:00 AM CDT Monday was 12.9 feet.
- Forecast...The river is expected to fall below flood stage
early Sunday morning and continue falling to 10.7 feet
Monday, May 04.
- Flood stage is 11.0 feet.
- Flood History...This crest compares to a previous crest of
12.4 feet on 05/01/2020.
- http://www.weather.gov/safety/flood

&&

River forecasts are available for some but not all river gaging
locations. The 7 day river forecast takes into account past
precipitation, soil moisture conditions, and predicted
precipitation for the basin. Precipitation is for the next 24 hours
in the future from April through September and for 48 hours in the
future from October through March.

(Stages in ft.)       Bank-       Latest         Forecast stages
-               Flood full       observed        ...for 1 pm...
Location        stage stage     stage/time    Tue  Wed  Thu  Fri
New Munster     11.0  10.0  12.43 10 am 4/27  12.1 11.8 11.6 11.4

-                    Highest       24 hour change
-                    observed      in river stage
-                    stage in        (ft.) up to     Highest stage
-                    the last      latest observed    forecast in
-                     7 days            stage         next 7 days
New Munster     14.83 9 am 4/20        -0.43       12.40 1 pm 4/27


&&



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