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FLOOD WARNING
FLOOD WARNING ISSUED APRIL 21 AT 8:20PM CDT UNTIL APRIL 24 AT 7:00AM CDT
Effective: 2026-04-21 20:20:00 Local Time Expires: 2026-04-24 07:00:00 Local Time Issued by: NWS Chicago IL
Alert Text
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS INILLINOIS...

ROCK RIVER AT BYRON AFFECTING OGLE COUNTY.

ROCK RIVER AT ROCKTON AFFECTING WINNEBAGO COUNTY.

ROCK RIVER AT LATHAM PARK AFFECTING WINNEBAGO COUNTY.

* WHAT...MINOR FLOODING IS OCCURRING AND FORECASTED TO CONTINUE.

* WHERE...ROCK RIVER FROM CONFLUENCE WITH KISHWAUKEE RIVER TO CASTLE ROCK STATE PARK NEAR OREGON, INCLUDING THE BYRON GAUGE.

* WHEN...UNTIL FRIDAY MORNING.

* IMPACTS...AT 13.5 FEET, NUMEROUS LOW-LYING STRUCTURES DOWNSTREAM OF BYRON ARE FLOODED.

* ADDITIONAL DETAILS... - AT 7:15 PM CDT TUESDAY THE STAGE WAS 13.7 FEET. - FORECAST...THE RIVER IS EXPECTED TO CONTINUE A GRADUAL FALL AND MAY FALL BELOW FLOOD STAGE THURSDAY EVENING. - FLOOD STAGE IS 13.0 FEET. - HTTP: WWW.WEATHER.GOV SAFETY FLOOD
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Target Area
OGLE, IL
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Hazardous Weather Conditions

No active alerts for CHEVY CHASE, MARYLAND

Current Conditions: CHEVY CHASE, MARYLAND

LEESBURG/GODFREY (KJYO)

Cloudy

55.4 F
Humidity:62%
Wind Speed: 0.0 mph
Barometer:30.06 in
Dewpoint:42.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 22 2026, 10:35 AM EDT
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5 Day Forecast for CHEVY CHASE, MARYLAND (20815)

Wednesday

High 75 °F
T-storms Likely
Wednesday
Night
Low 55 °F
Partly Cloudy
Thursday

High 80 °F
Partly Sunny
Thursday
Night
Low 57 °F
Partly Cloudy
Friday

High 78 °F
Chance of T-storms
Friday
Night
Low 55 °F
Chance of T-storms
Saturday

High 62 °F
T-storms
Saturday
Night
Low 48 °F
Rain
Sunday

High 64 °F
Rain Showers Likely

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)
10:35 AM EDT 0.0 10.00 Cloudy -- 55.4 42.8 62% NA NA 30.06 1018.0
10:15 AM EDT 0.0 10.00 Cloudy -- 53.6 42.8 67% NA NA 30.06 1018.0
09:55 AM EDT 0.0 10.00 Cloudy -- 53.6 42.8 67% NA NA 30.05 1017.6
09:35 AM EDT SW 3.4 10.00 Cloudy -- 53.6 42.8 67% NA NA 30.06 1018.0
09:15 AM EDT SW 3.4 10.00 Partly Cloudy -- 53.6 41.0 62% NA NA 30.06 1018.0
08:55 AM EDT 4.7 10.00 Mostly Cloudy -- 51.8 41.0 67% NA NA 30.05 1017.6
08:35 AM EDT 0.0 10.00 Mostly Cloudy -- 51.8 41.0 67% NA NA 30.06 1018.0
08:15 AM EDT 0.0 10.00 Mostly Cloudy -- 50.0 41.0 71% NA NA 30.06 1018.0
07:55 AM EDT 0.0 10.00 Partly Cloudy -- 50.0 39.2 66% NA NA 30.05 1017.6
07:35 AM EDT 0.0 10.00 Clear -- 50.0 37.4 62% NA NA 30.05 1017.6
07:15 AM EDT 0.0 10.00 Clear -- 50.0 39.2 66% NA NA 30.05 1017.6
06:55 AM EDT 0.0 10.00 Clear -- 50.0 37.4 62% NA NA 30.05 1017.6
06:35 AM EDT 4.7 10.00 Clear -- 50.0 37.4 62% NA NA 30.05 1017.6
06:15 AM EDT S 6.9 10.00 Clear -- 50.0 37.4 62% NA NA 30.05 1017.6
05:55 AM EDT S 5.8 10.00 Clear -- 50.0 37.4 62% NA NA 30.05 1017.6
05:35 AM EDT S 5.8 10.00 Clear -- 50.0 35.6 58% NA NA 30.05 1017.6
05:15 AM EDT S 5.8 10.00 Clear -- 50.0 35.6 58% NA NA 30.05 1017.6
04:55 AM EDT S 9.2 10.00 Clear -- 50.0 35.6 58% NA NA 30.05 1017.6
04:35 AM EDT S 8.1 10.00 Clear -- 50.0 35.6 58% NA NA 30.06 1018.0
04:15 AM EDT S 8.1 10.00 Clear -- 50.0 35.6 58% NA NA 30.07 1018.3
03:55 AM EDT S 8.1 10.00 Clear -- 50.0 35.6 58% NA NA 30.08 1018.6
03:35 AM EDT S 8.1 10.00 Clear -- 50.0 35.6 58% NA NA 30.08 1018.6
03:15 AM EDT S 8.1 10.00 Clear -- 50.0 35.6 58% NA NA 30.08 1018.6
02:55 AM EDT S 8.1 10.00 Clear -- 50.0 35.6 58% NA NA 30.09 1019.0

Regional Weather Observation

LEESBURG/GODFREY (KJYO)

Cloudy
55.4 F

FREDERICK (KFDK)

Mostly Cloudy
51.8 F

CARROLL CNTY (KDMW)

Cloudy
55.4 F

NSF THURMONT (KRSP)

Mostly Cloudy
53.1 F

WASH DC/DULLES (KIAD)

Light Rain
57.2 F

WASHINGTON/NATL (KDCA)

Partly Cloudy
60.8 F
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