Maryland flood warnings
There are no flood warnings in Maryland right now. The last one was issued on October 12, 2026.
Flooding is happening or expected soon, often along rivers or over wide areas, and may last for days.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
Active flood warnings in Maryland
None right now. Other active alerts in Maryland: none.
Flood Warnings in Maryland by year
Maryland averaged 94.5 flood warnings per year from 2016 to 2025, and has had 11 so far in 2026. The most recent was issued on October 12, 2026.
Counties with the most flood warnings
| County | 2016–2025 |
|---|---|
| Montgomery County | 192 |
| Baltimore city | 187 |
| Prince George's County | 163 |
| Anne Arundel County | 111 |
| Frederick County | 110 |
| Howard County | 108 |
| Harford County | 94 |
| Washington County | 92 |
| Carroll County | 82 |
| Allegany County | 72 |
What a flood warning means
A flood warning is issued when flooding is occurring or imminent but develops more slowly than a flash flood. River flood warnings are tied to forecast points on a river or stream and include the expected crest and the flood stage, which tells you how high the water will rise compared with the level where damage begins.
More about flood warnings and the national map →
What to do
- Follow evacuation orders from local officials.
- Move valuables and vehicles to higher ground.
- Never drive through water covering a road; the road bed may be washed out.