August 27, 2024
New Right Whale Slow Zone: SE Nantucket, MA
Effective Through September 8
On August 24, 2024, Stellwagen Bank National Marine Sanctuary observers detected the presence of right whales southeast of Nantucket, MA. The right whale Slow Zone is in effect through September 8, 2024.
As a reminder, three additional Slow Zones are also currently in effect. Locations and effective dates are listed below.
VOLUNTARY Right whale "Slow Zone" AREAS
Mariners are requested to avoid or transit at 10 knots or less inside the following Dynamic Management Areas (DMA) where right whales have been detected. Please visit our
website for more information.
Southeast of Nantucket, MA DMA Slow Zone: Effective August 24-September 8
Waters bounded by:
NORTHERN BOUNDARY: 40°35' N
SOUTHERN BOUNDARY: 39°55' N
EASTERN BOUNDARY: 68°41' W
WESTERN BOUNDARY: 69°31' W
Southeast of New York 2, NY DMA Slow Zone: Effective August 24-September 8
Waters bounded by:
NORTHERN BOUNDARY: 40°02' N
SOUTHERN BOUNDARY: 39°25' N
EASTERN BOUNDARY: 71°53' W
WESTERN BOUNDARY: 72°41' W
Southwest of Martha’s Vineyard, MA DMA Slow Zone: Effective August 24-September 8
Waters bounded by:
NORTHERN BOUNDARY: 40°41' N
SOUTHERN BOUNDARY: 40°01' N
EASTERN BOUNDARY: 71°17' W
WESTERN BOUNDARY: 72°07' W
Southeast of New York, NY DMA Slow Zone: Effective August 16-31
Waters bounded by:
NORTHERN BOUNDARY: 40°20' N
SOUTHERN BOUNDARY: 39°44' N
EASTERN BOUNDARY: 71°54' W
WESTERN BOUNDARY: 72°41' W
Active Seasonal Management Areas (SMAs)
No Active SMAs
Give Right Whales Room
North Atlantic right whales are on the move along the Atlantic coast of the U.S. If seen, remember that approaching a right whale closer than 500 yards is a violation of federal and state law.
Right Whales in Trouble
Endangered North Atlantic right whales are approaching extinction. There are approximately 360 individuals remaining, including fewer than 70 reproductively active females. Human impacts continue to threaten the survival of this species.
In August 2017, NOAA Fisheries declared the increase in right whale mortalities an “
Unusual Mortality Event,” which helps the agency direct additional scientific and financial resources to investigating, understanding, and reducing the mortalities in partnership with the Marine Mammal Stranding Network, Canada’s Department of Fisheries and Oceans, and outside experts from the scientific research community.
More Information
Download the
Whale Alert app for iPad, iPhone, and Android for real time updates on Slow Zones, SMAs, and other right whale sightings.
Spread the Word!
All boaters from Maine to Virginia, or interested parties, can sign up for
email or text notifications about the latest Right Whale Slow Zones. You can also follow us on Facebook (@NOAAFisheriesNEMA) and Twitter (@NOAAFish_GARFO) for announcements.
Share our
video on Right Whale Slow Zones.
Questions?