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Elev 477 ft, 39.17 °N, 77.16 °W

Gaithersburg, MD Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Gaithersburg, MD
Elevation: 477ft
Nearby Weather Stations

Active Weather Alerts

River Flood Warning
Issued: 1:56 AM May. 16, 2025 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL LATE TOMORROW EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Potomac River at Little Falls.

* WHEN...Until late tomorrow evening.

* IMPACTS...At 11.5 feet, Water covers the towpath in multiple spots
between the Washington Aqueduct Dam and Pennyfield Lock, mileposts
15 to 19 on the C&O Canal.

* ADDITIONAL DETAILS...
- At 8:45 PM EDT Thursday the stage was 11.7 feet, or 1.7 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:45 PM EDT Thursday was 11.7 feet.
- Forecast...The river is expected to rise to a crest of 11.7
feet just after midnight tonight. It will then fall below
flood stage tomorrow afternoon.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
11.7 feet on 04/14/1961.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information

&&

River Name   Fld      Observed    Fri   Fri   Fri     Crest
Location     Stg   Stg  Day/Time  2AM   8AM   2PM   Stg Time Date

Potomac River
Little Falls 10.0  11.7 Thu 8 pm  11.7  11.4  10.5  11.7 2am Fri

&&



River Flood Warning
Issued: 1:56 AM May. 16, 2025 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL LATE SATURDAY MORNING...

* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.

* WHERE...Potomac River at Edwards Ferry.

* WHEN...Until late Saturday morning.

* ADDITIONAL DETAILS...
- At 9:30 PM EDT Thursday the stage was 21.2 feet, or 6.2 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:30 PM EDT Thursday was 21.3 feet.
- Forecast...The river is expected to fall below flood stage
early Saturday morning and continue falling to 12.0 feet
Sunday evening.
- Flood stage is 15.0 feet.
- Flood History...This crest compares to a previous crest of
21.1 feet on 05/17/2014.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information

&&

River Name   Fld      Observed    Fri   Fri   Fri     Crest
Location     Stg   Stg  Day/Time  2AM   8AM   2PM   Stg Time Date

Potomac River
Edwards Ferr 15.0  21.2 Thu 9 pm  20.9  19.3  17.5   MSG  unknown

&&



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