Special Marine Warning Issued for Chesapeake Bay MD Areas
This alert is no longer in effect.
NOAA issued it on August 17, 2026, 6 days ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Baltimore/Washington has issued a Special Marine Warning for parts of Chesapeake Bay and nearby rivers until 8:45 PM EDT.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Chesapeake Bay, Maryland
- Issued
- August 17, 2026
- Issuing authority
- NWS Baltimore MD/Washington DC
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 6 days ago; use the issuing agency's live warning service for current conditions in Chesapeake Bay, Maryland.
Alert Details
A Special Marine Warning has been issued by the National Weather Service Baltimore MD/Washington DC. The alert is effective from August 17, 2026 at 7:21 PM EDT until August 17, 2026 at 8:45 PM EDT.
Affected Areas
The warning covers Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Eastern Bay; and Choptank River to Cambridge MD and the Little Choptank River. Impacted locations include Choptank River, Knapps Narrows Bridge, Tilghman Island, Blackwalnut Point, Miles River, Herring Bay, Bloody Point Light, Poplar Island, North Beach, Shady Side, Chesapeake Beach, Deale, and Mayo.
What You Should Do
Boaters should move to safe harbor until hazardous weather passes.
Expected Conditions
A strong thunderstorm located over Deale is moving east at 25 knots. Radar indicated wind gusts of 34 knots or greater. Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel.
Timeline
The alert is in effect from 7:21 PM EDT to 8:45 PM EDT on August 17, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,085 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to August 17, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.