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FLOOD WARNING
FLOOD WARNING ISSUED APRIL 18 AT 7:59PM CDT
Effective: 2026-04-18 19:59:00 Local Time Expires: 2026-04-19 14:00:00 Local Time Issued by: NWS Chicago IL
Alert Text
...FORECAST FLOODING CHANGED FROM MINOR TO MODERATE SEVERITY ANDINCREASED IN DURATION FOR THE FOLLOWING RIVERS IN ILLINOIS...

PECATONICA RIVER NEAR SHIRLAND AFFECTING WINNEBAGO COUNTY.

* WHAT...MINOR FLOODING IS OCCURRING AND MODERATE FLOODING IS FORECASTED TO OCCUR.

* WHERE...PECATONICA RIVER FROM WINNEBAGO COUNTY LINE DOWNSTREAM TO CONFLUENCE WITH THE ROCK RIVER, INCLUDING THE SHIRLAND GAUGE.

* WHEN...UNTIL FURTHER NOTICE.

* IMPACTS...AT 14.0 FEET, STRUCTURES THREATENED AT RIVERS EDGE CAMPGROUND EAST OF SHIRLAND.

* ADDITIONAL DETAILS... - AT 7:00 PM CDT SATURDAY THE STAGE WAS 13.2 FEET. - FORECAST...THE RIVER IS EXPECTED TO RISE TO A CREST NEAR 14.0 FEET (MODERATE STAGE) EARLY MONDAY MORNING. IT IS EXPECTED TO SLOWLY FALL THEREAFTER THROUGH NEXT WEEK. - FLOOD STAGE IS 12.0 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

66.2 F
Humidity:83%
Wind Speed:NE 5.8 mph
Barometer:29.82 in
Dewpoint:60.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 19 2026, 01:55 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)
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
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

Regional Weather Observation

LEESBURG/GODFREY (KJYO)

Cloudy
66.2 F

FREDERICK (KFDK)

Cloudy
62.2 F

CARROLL CNTY (KDMW)

Mostly Cloudy
60.8 F

NSF THURMONT (KRSP)

NULL
57.9 F

WASH DC/DULLES (KIAD)

Partly Cloudy
64.4 F

WASHINGTON/NATL (KDCA)

Clear
64.4 F
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