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Elev 400 ft, 39.11 °N, 77.08 °W

Rockville, MD Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Rockville, MD
Elevation: 400ft
Nearby Weather Stations

Active Weather Alerts

River Flood Warning
Issued: 8:16 PM May. 15, 2025 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY MORNING...

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

* WHERE...Potomac River at Little Falls.

* WHEN...Until early Saturday morning.

* IMPACTS...At 12.0 feet, The C&O Canal overflows at the Great Falls
Tavern. Water covers the towpath in many areas.

* ADDITIONAL DETAILS...
- At 3:45 PM EDT Thursday the stage was 11.4 feet, or 1.4 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 3:45 PM EDT Thursday was 11.4 feet.
- Forecast...The river is expected to rise to a crest of 12.2
feet this evening. It will then fall below flood stage
tomorrow evening.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
12.2 feet on 02/27/1961.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information

&&

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

Potomac River
Little Falls 10.0  11.4 Thu 3 pm  12.2  11.9  11.3  12.2 8pm Thu

&&



River Flood Warning
Issued: 8:15 PM May. 15, 2025 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY AFTERNOON...

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

* WHERE...Potomac River at Edwards Ferry.

* WHEN...Until early Saturday afternoon.

* ADDITIONAL DETAILS...
- At 3:45 PM EDT Thursday the stage was 21.1 feet, or 6.1 feet
above flood stage.
- Recent Activity...The maximum river stage in the 24 hours
ending at 3:45 PM EDT Thursday was 21.1 feet.
- Forecast...The river is expected to fall below flood stage
Saturday morning and continue falling to 14.7 feet early
Saturday afternoon.
- 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    Thu   Fri   Fri     Crest
Location     Stg   Stg  Day/Time  8PM   2AM   8AM   Stg Time Date

Potomac River
Edwards Ferr 15.0  21.1 Thu 3 pm  20.4  19.2  18.1   MSG  unknown

&&



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