Northeast Canyons & Montauk chlorophyll chart
Satellite data from
Southern New England and the canyons off it — the south shore of Long Island out to Montauk, Block Island, Rhode Island, Martha's Vineyard and Nantucket — and south across the shelf to Hudson Canyon and the line of canyons running east along the shelf edge.
Today’s read
| Station | Water | Observed |
|---|---|---|
| Block Island, RI (44097) | 61.0°F | |
| Buzzards Bay, MA (44085) | 60.6°F | |
| Nantucket Sound (44020) | 59.9°F | |
| Nantucket 54 NM Southeast of Nantucket (44008) | 62.4°F | |
| Cape Cod Bay, MA (44090) | 59.2°F |
On this chart: Montauk, Block Island, Hudson Canyon, Martha's Vineyard, Nantucket, Shinnecock, Point Judith, Block Canyon, Atlantis Canyon, Veatch Canyon and Hydrographer Canyon.
How to read today’s Northeast Canyons chart
Work the colour line. Green water is productive and blue water is clean; bait stacks on the seam between them, and gamefish hunt that seam. The contours above trace the productivity edges so the line is something you can put a waypoint on.
The highest-percentage water offshore is where a chlorophyll edge lines up with a temperature break. Check this against the Northeast Canyons SST chart and start where they overlap.
Pair it with temperature
Chlorophyll shows you the food. Temperature shows you whether the conditions suit the fish you are after. See today’s Northeast Canyons SST chart →
Frequently asked
How often does the Northeast Canyons chlorophyll chart update?
The image is regenerated twice a day from the latest satellite chlorophyll data in the Catalysst app, rendered on a log scale and clipped to the coastline. The date shown is the date of the satellite data, which moves forward about once a day.
What area does the Northeast Canyons chlorophyll chart cover?
From 39.3°N to 41.9°N and 73.0°W to 68.0°W. Ports and landmarks on it include Montauk, Block Island, Hudson Canyon, Martha's Vineyard, Nantucket, Shinnecock, Point Judith, Block Canyon, Atlantis Canyon, Veatch Canyon and Hydrographer Canyon.
Do you fish the green water or the blue water?
Neither — you fish the edge between them. Bait gets pushed against the clean-water line and predators hunt that seam. The highest-percentage water is where a chlorophyll edge stacks on top of a temperature break.
Why does chlorophyll matter if I already have SST?
Temperature tells you where conditions suit the predator; chlorophyll tells you where the food is. A break with no bait on it is just a line in the water.
This chart, live and zoomable
1-, 3- and 7-day windows, contour lines, and the working fleet on the same map. 7-day free trial.
Start free trial