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FLOOD WARNING
FLOOD WARNING ISSUED APRIL 18 AT 2:20PM CDT UNTIL APRIL 25 AT 1:00PM CDT
Effective: 2026-04-18 14:20:00 Local Time Expires: 2026-04-25 13:00:00 Local Time Issued by: NWS Chicago IL
Alert Text
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL IS EXPECTED. * WHERE...A PORTION OF NORTHEAST ILLINOIS, INCLUDING THE FOLLOWING COUNTIES, LAKE IL AND MCHENRY.

* WHEN...UNTIL 100 PM CDT SATURDAY APR 25.

* IMPACTS...NUMEROUS ROADS, YARDS, STRUCTURES, AND PARK LAND ARE EXPECTED TO FLOOD ALONG THE FOX RIVER CHAIN OF LAKES.

* ADDITIONAL DETAILS... - AT 145 PM CDT, RIVER GAUGES ALONG THE FOX RIVER CHAIN OF LAKES INDICATED SLOWLY RISES WATER LEVELS DUE TO RECENT RAINFALL ACROSS THE AREA. - WATER LEVELS MAY NEAR MAJOR FLOOD STAGE BY THE MIDDLE OF NEXT WEEK AND REMAIN ABOVE FLOOD STAGE POTENTIALLY FOR SEVERAL WEEKS. IMPACTS FROM THIS FLOOD MAY BE SIMILAR TO THOSE EXPERIENCED IN MAY OF 1973, OCTOBER OF 1986, OR JUNE OF 2008. - 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
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Target Area
LAKE, IL, MCHENRY, IL
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Hazardous Weather Conditions

Freeze Watch issued April 18 at 11:59PM EDT until April 21 at 10:00AM EDT

Current Conditions: CHEVY CHASE, MARYLAND

LEESBURG/GODFREY (KJYO)

Cloudy

62.6 F
Humidity:94%
Wind Speed:NE 3.4 mph
Barometer:29.79 in
Dewpoint:60.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 19 2026, 03:35 AM EDT
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5 Day Forecast for CHEVY CHASE, MARYLAND (20815)

Sunday

High 59 °F
Rain Showers Likely
Sunday
Night
Low 42 °F
Partly Cloudy
Monday

High 55 °F
Partly Sunny
Monday
Night
Low 33 °F
Mostly Clear
Tuesday

High 59 °F
Mostly Sunny
Tuesday
Night
Low 48 °F
Slight Chance of Rain
Wednesday

High 73 °F
Chance of Rain Showers
Wednesday
Night
Low 50 °F
Partly Cloudy
Thursday

High 77 °F
Mostly Sunny

Observation History for CHEVY CHASE, MARYLAND


Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
03:35 AM EDT NE 3.4 10.00 Cloudy -- 62.6 60.8 94% NA NA 29.79 1008.8
03:15 AM EDT 0.0 7.00 Light Rain -- 62.6 60.8 94% NA NA 29.79 1008.8
02:55 AM EDT 3.4 10.00 Cloudy -- 62.6 60.8 94% NA NA 29.81 1009.2
02:35 AM EDT 0.0 10.00 Cloudy -- 62.6 60.8 94% NA NA 29.81 1009.5
02:15 AM EDT 3.4 10.00 Light Rain -- 64.4 60.8 88% NA NA 29.81 1009.5
01:55 AM EDT NE 5.8 10.00 Cloudy -- 66.2 60.8 83% NA NA 29.82 1009.8
01:35 AM EDT 10.3 10.00 Cloudy -- 68.0 60.8 78% NA NA 29.83 1010.2
01:15 AM EDT 3.4 10.00 NULL -- 68.0 60.8 78% NA NA 29.84 1010.5
12:55 AM EDT 0.0 10.00 Cloudy -- 66.2 60.8 83% NA NA 29.85 1010.8
12:35 AM EDT 0.0 10.00 Cloudy -- 68.0 60.8 78% NA NA 29.85 1010.8
12:15 AM EDT 0.0 10.00 NULL -- 68.0 60.8 78% NA NA 29.86 1011.2
11:55 PM EDT E 4.7 10.00 Cloudy -- 68.0 60.8 78% NA NA 29.84 1010.5
11:35 PM EDT E 3.4 10.00 Light Rain -- 69.8 60.8 73% NA NA 29.85 1010.8
11:15 PM EDT E 4.7 10.00 NULL -- 69.8 60.8 73% NA NA 29.85 1010.8
10:55 PM EDT 4.7 10.00 Cloudy -- 69.8 60.8 73% NA NA M
10:35 PM EDT 5.8 10.00 Mostly Cloudy -- 69.8 60.8 73% NA NA 29.83 1010.2
10:15 PM EDT SE 5.8 10.00 Mostly Cloudy -- 69.8 60.8 73% NA NA 29.82 1009.8
09:55 PM EDT SE 10.3 10.00 Clear -- 69.8 60.8 73% NA NA 29.82 1009.8
09:35 PM EDT SE 9.2 10.00 Clear -- 71.6 60.8 69% NA 71.8 29.83 1010.2
09:15 PM EDT SE 11.4 10.00 Clear -- 71.6 60.8 69% NA 71.8 29.82 1009.8
08:55 PM EDT SE 11.4 G 23.0 10.00 Clear -- 71.6 60.8 69% NA 71.8 29.82 1009.8
08:35 PM EDT SE 13.9 G 20.8 10.00 Clear -- 73.4 60.8 65% NA 73.4 29.81 1009.5
08:15 PM EDT SE 9.2 G 18.3 10.00 Clear -- 73.4 60.8 65% NA 73.4 29.81 1009.2
07:55 PM EDT SE 15.0 G 20.8 10.00 Clear -- 75.2 60.8 61% NA 75.2 29.81 1009.2

Regional Weather Observation

LEESBURG/GODFREY (KJYO)

Cloudy
62.6 F

FREDERICK (KFDK)

Light Rain and Fog/Mist
60.3 F

CARROLL CNTY (KDMW)

Rain
60.8 F

NSF THURMONT (KRSP)

Light Rain
57.0 F

WASH DC/DULLES (KIAD)

Mostly Clear
62.6 F

WASHINGTON/NATL (KDCA)

Clear
60.8 F
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