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FLOOD WATCH
FLOOD WATCH ISSUED APRIL 17 AT 1:11PM CDT UNTIL APRIL 18 AT 4:00AM CDT
Effective: 2026-04-17 13:11:00 Local Time Expires: 2026-04-18 04:00:00 Local Time Issued by: NWS St Louis MO
Alert Text
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BEPOSSIBLE.

* WHERE...PORTIONS OF ILLINOIS, INCLUDING THE FOLLOWING AREAS, ADAMS IL, BROWN IL, CALHOUN IL, GREENE IL, JERSEY IL, MACOUPIN IL, MONTGOMERY IL AND PIKE IL AND MISSOURI, INCLUDING THE FOLLOWING AREAS, AUDRAIN MO, KNOX MO, LEWIS MO, LINCOLN MO, MARION MO, MONROE MO, MONTGOMERY MO, PIKE MO, RALLS MO AND SHELBY MO.

* WHEN...THROUGH LATE TONIGHT.

* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS, CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS. STORM DRAINS AND DITCHES MAY BECOME CLOGGED WITH DEBRIS.

* ADDITIONAL DETAILS... - RAINFALL AMOUNTS OF UP TO 3 INCHES MAY FALL IN THIS AREA AND CAUSE LOCALIZED FLOODING.
More Information
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Target Area
GREENE, MACOUPIN, MONTGOMERY, ADAMS, BROWN, PIKE, CALHOUN, JERSEY, KNOX, LEWIS, SHELBY, MARION, MONROE, RALLS, PIKE, AUDRAIN, MONTGOMERY, LINCOLN
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Hazardous Weather Conditions

No active alerts for CHEVY CHASE, MARYLAND

Current Conditions: CHEVY CHASE, MARYLAND

LEESBURG/GODFREY (KJYO)

Clear

71.6 F
Humidity:57%
Wind Speed:NE 3.4 mph
Barometer:29.96 in
Dewpoint:55.4 F
Visibility:10.00 mi
Precip:--
Heat Index:71.1 F
Wind Chill:NA
Apr 17 2026, 08:35 PM EDT
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5 Day Forecast for CHEVY CHASE, MARYLAND (20815)

Friday

High 82 °F
Forecast Missing
Friday
Night
Low 60 °F
Forecast Missing
Saturday

High 84 °F
Forecast Missing
Saturday
Night
Low 53 °F
Forecast Missing
Sunday

High 60 °F
Forecast Missing
Sunday
Night
Low 41 °F
Forecast Missing
Monday

High 55 °F
Forecast Missing
Monday
Night
Low 37 °F
Forecast Missing
Tuesday

High 64 °F
Forecast Missing

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)
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
06:15 PM EDT 5.8 10.00 Clear -- 77.0 55.4 47% NA 76.6 29.95 1014.2
05:55 PM EDT 11.4 G 16.1 10.00 Clear -- 77.0 55.4 47% NA 76.6 29.95 1014.2
05:35 PM EDT 5.8 G 16.1 10.00 Clear -- 78.8 57.2 48% NA 78.6 29.95 1014.2
05:15 PM EDT 9.2 10.00 Clear -- 78.8 57.2 48% NA 78.6 29.94 1013.9
04:55 PM EDT 8.1 10.00 Clear -- 78.8 57.2 48% NA 78.6 29.95 1014.2
04:35 PM EDT 6.9 10.00 Partly Cloudy -- 78.8 59.0 51% NA 78.8 29.95 1014.2
04:15 PM EDT 13.9 G 17.2 10.00 Partly Cloudy -- 78.8 57.2 48% NA 78.6 29.95 1014.2
03:55 PM EDT NW 12.8 G 20.8 10.00 Clear -- 78.8 57.2 48% NA 78.6 29.95 1014.2
03:35 PM EDT NW 10.3 G 19.7 10.00 Clear -- 78.8 57.2 48% NA 78.6 29.95 1014.2
03:15 PM EDT 10.3 G 20.8 10.00 Partly Cloudy -- 78.8 57.2 48% NA 78.6 29.95 1014.2
02:55 PM EDT 12.8 G 17.2 10.00 Clear -- 78.8 57.2 48% NA 78.6 29.95 1014.2
02:35 PM EDT 12.8 G 19.7 10.00 Partly Cloudy -- 78.8 55.4 45% NA 78.4 29.96 1014.6
01:55 PM EDT 10.3 G 20.8 10.00 Mostly Cloudy -- 75.2 55.4 50% NA 74.8 29.96 1014.6
01:35 PM EDT 10.3 G 18.3 10.00 Mostly Cloudy -- 78.8 57.2 48% NA 78.6 29.96 1014.6
01:15 PM EDT 13.9 G 20.8 10.00 Clear -- 77.0 55.4 47% NA 76.6 29.96 1014.6
12:55 PM EDT 15.0 G 21.9 10.00 Clear -- 77.0 55.4 47% NA 76.6 29.96 1014.6
11:55 AM EDT NW 15.0 G 19.7 10.00 Mostly Cloudy -- 75.2 55.4 50% NA 74.8 29.97 1014.9
11:35 AM EDT NW 13.9 G 18.3 10.00 Partly Cloudy -- 77.0 57.2 50% NA 76.8 29.97 1014.9

Regional Weather Observation

LEESBURG/GODFREY (KJYO)

Clear
71.6 F

FREDERICK (KFDK)

Mostly Clear
71.6 F

CARROLL CNTY (KDMW)

Clear
73.4 F

NSF THURMONT (KRSP)

Clear
66.9 F

WASH DC/DULLES (KIAD)

Clear
69.8 F

WASHINGTON/NATL (KDCA)

Clear
73.4 F
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