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FLOOD WARNING
FLOOD WARNING ISSUED APRIL 18 AT 8:09PM CDT
Effective: 2026-04-18 20:09:00 Local Time Expires: 2026-04-19 14:15:00 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...MODERATE FLOODING IS OCCURRING AND FORECASTED TO CONTINUE.

* WHERE...ROCK RIVER FROM PRAIRIE HILL ROAD DOWNSTREAM TO SWANSON ROAD IN ROSCOE, INCLUDING THE ROCKTON GAUGE.

* WHEN...UNTIL FURTHER NOTICE.

* IMPACTS...AT 13.5 FEET, OLD RIVER ROAD THREATENED WEST OF ROSCOE BRIDGE.

* ADDITIONAL DETAILS... - AT 7:30 PM CDT SATURDAY THE STAGE WAS 12.6 FEET. - FORECAST...THE RIVER IS EXPECTED TO RISE TO A CREST OF 13.1 FEET TOMORROW EVENING AND REMAIN IN MODERATE FLOOD STAGE UNTIL FURTHER NOTICE. - FLOOD STAGE IS 10.0 FEET. - HTTP: WWW.WEATHER.GOV SAFETY FLOOD
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Target Area
WINNEBAGO, 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

68.0 F
Humidity:78%
Wind Speed: 0.0 mph
Barometer:29.85 in
Dewpoint:60.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 19 2026, 12:35 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)
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
07:35 PM EDT SE 11.4 G 18.3 10.00 Clear -- 77.0 60.8 57% NA 77.2 29.81 1009.2
07:15 PM EDT SE 12.8 G 19.7 10.00 Clear -- 77.0 62.6 61% NA 77.4 29.81 1009.5
06:55 PM EDT SE 12.8 G 18.3 10.00 Clear -- 78.8 62.6 58% NA 79.2 29.81 1009.5
06:35 PM EDT G 19.7 10.00 Clear -- 78.8 62.6 58% NA 79.2 29.82 1009.8
06:15 PM EDT SE 12.8 10.00 Clear -- 78.8 62.6 58% NA 79.2 29.83 1010.2
05:55 PM EDT 15.0 G 23.0 10.00 Clear -- 78.8 62.6 58% NA 79.2 29.83 1010.2
05:35 PM EDT 10.3 G 20.8 10.00 Partly Cloudy -- 80.6 62.6 54% NA 81.9 29.83 1010.2
05:15 PM EDT SE 13.9 10.00 NULL -- 80.6 62.6 54% NA 81.9 29.83 1010.2
04:55 PM EDT 9.2 G 16.1 10.00 Clear -- 80.6 62.6 54% NA 81.9 29.83 1010.2

Regional Weather Observation

LEESBURG/GODFREY (KJYO)

Cloudy
68.0 F

FREDERICK (KFDK)

NULL
63.1 F

CARROLL CNTY (KDMW)

Partly Cloudy
60.8 F

NSF THURMONT (KRSP)

Light Rain
60.1 F

WASH DC/DULLES (KIAD)

Cloudy
66.2 F

WASHINGTON/NATL (KDCA)

Mostly Cloudy
66.2 F
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