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FLOOD ADVISORY
FLOOD ADVISORY ISSUED APRIL 17 AT 9:41PM CDT UNTIL APRIL 18 AT 3:45AM CDT
Effective: 2026-04-17 21:41:00 Local Time Expires: 2026-04-18 03:45:00 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, COOK, DUPAGE AND WILL.

* WHEN...UNTIL 345 AM CDT SATURDAY.

* IMPACTS...CREEKS AND STREAMS MAY RISE OUT OF THEIR BANKS. FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS. ROADS AND STREETS MAY BE FLOODED.

* ADDITIONAL DETAILS... - AT 940 PM CDT, DOPPLER RADAR INDICATED RAINFALL RATES UP TO 1 INCH PER HOUR MOVING INTO THE AREA. UP TO 1 INCH OF RAINFALL WAS BEEN OBSERVED SO FAR IN NORTHERN COOK COUNTY DUE TO EARLIER RAINFALL. ROADWAY AND UNDERPASS FLOODING MAY OCCUR SHORTLY AFTER THE ONSET OF HEAVY RAINFALL. - ISOLATED RAINFALL UP TO 1 INCH MAY OCCUR ACROSS THE AREA. - SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CHICAGO, AURORA, JOLIET, NAPERVILLE, ELGIN, CICERO, ARLINGTON HEIGHTS, EVANSTON, SCHAUMBURG, BOLINGBROOK, PALATINE, SKOKIE, DES PLAINES, ORLAND PARK, TINLEY PARK, OAK LAWN, BERWYN, MOUNT PROSPECT, WHEATON AND HOFFMAN ESTATES. - HTTP: WWW.WEATHER.GOV SAFETY FLOOD
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Target Area
COOK, IL, DUPAGE, IL, WILL, IL
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Hazardous Weather Conditions

No active alerts for CHEVY CHASE, MARYLAND

Current Conditions: CHEVY CHASE, MARYLAND

LEESBURG/GODFREY (KJYO)

Clear

57.2 F
Humidity:88%
Wind Speed: 0.0 mph
Barometer:30.01 in
Dewpoint:53.6 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 18 2026, 02:35 AM EDT
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5 Day Forecast for CHEVY CHASE, MARYLAND (20815)

Saturday

High 84 °F
Partly Sunny
Saturday
Night
Low 53 °F
Rain
Sunday

High 60 °F
Rain Showers Likely
Sunday
Night
Low 41 °F
Showers Likely
Monday

High 55 °F
Partly Sunny
Monday
Night
Low 37 °F
Mostly Clear
Tuesday

High 64 °F
Mostly Sunny
Tuesday
Night
Low 51 °F
Partly Cloudy
Wednesday

High 77 °F
Isolated T-storm

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)
02:35 AM EDT 0.0 10.00 Clear -- 57.2 53.6 88% NA NA 30.01 1016.3
02:15 AM EDT 0.0 10.00 Clear -- 59.0 53.6 82% NA NA 30.01 1016.3
01:55 AM EDT 0.0 10.00 Clear -- 59.0 53.6 82% NA NA 30.02 1016.6
01:35 AM EDT 0.0 10.00 Clear -- 59.0 55.4 88% NA NA 30.02 1016.6
01:15 AM EDT 0.0 10.00 Clear -- 57.2 53.6 88% NA NA 30.01 1016.3
12:55 AM EDT 0.0 10.00 Clear -- 59.0 55.4 88% NA NA 30.00 1015.9
12:35 AM EDT 0.0 10.00 Clear -- 59.0 55.4 88% NA NA 30.00 1015.9
12:15 AM EDT 0.0 10.00 NULL -- 60.8 55.4 82% NA NA 30.00 1015.9
11:55 PM EDT 0.0 10.00 Clear -- 60.8 55.4 82% NA NA 29.99 1015.6
11:35 PM EDT 0.0 10.00 Clear -- 62.6 55.4 77% NA NA 29.98 1015.2
11:15 PM EDT 0.0 10.00 Clear -- 64.4 55.4 73% NA NA 29.99 1015.6
10:55 PM EDT 3.4 10.00 Clear -- 64.4 55.4 73% NA NA 29.99 1015.6
10:35 PM EDT 0.0 10.00 Clear -- 62.6 55.4 77% NA NA 29.98 1015.2
10:15 PM EDT 0.0 10.00 Clear -- 62.6 55.4 77% NA NA 29.98 1015.2
09:55 PM EDT 0.0 10.00 Clear -- 66.2 55.4 68% NA NA 29.97 1014.9
09:35 PM EDT 0.0 10.00 Clear -- 64.4 55.4 73% NA NA 29.97 1014.9
09:15 PM EDT 0.0 10.00 NULL -- 68.0 55.4 64% NA NA 29.97 1014.9
08:55 PM EDT 0.0 10.00 Clear -- 71.6 53.6 53% NA 70.9 29.97 1014.9
08:35 PM EDT NE 3.4 10.00 Clear -- 71.6 55.4 57% NA 71.1 29.96 1014.6
08:15 PM EDT NE 3.4 10.00 Clear -- 73.4 53.6 50% NA 72.9 29.95 1014.2
07:55 PM EDT NE 3.4 10.00 Clear -- 73.4 53.6 50% NA 72.9 29.96 1014.6
07:35 PM EDT 3.4 10.00 Clear -- 75.2 53.6 47% NA 74.7 29.96 1014.6
07:15 PM EDT 6.9 10.00 Clear -- 77.0 53.6 44% NA 76.5 29.95 1014.2
06:35 PM EDT 6.9 10.00 Clear -- 77.0 55.4 47% NA 76.6 29.95 1014.2

Regional Weather Observation

LEESBURG/GODFREY (KJYO)

Clear
57.2 F

FREDERICK (KFDK)

Clear
55.2 F

CARROLL CNTY (KDMW)

Clear
62.6 F

NSF THURMONT (KRSP)

Clear
62.1 F

WASH DC/DULLES (KIAD)

NULL
55.4 F

WASHINGTON/NATL (KDCA)

Clear
62.6 F
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