Cape Cod/Long Island

Provincetown Municipal Airport is in Significant Non-Compliance for failing to submit a required discharge monitoring report under its Clean Water Act permit (NPDES MAR05J06D). Facilities with active discharge permits must report quarterly on stormwater and other discharges; the airport's failure to file prevents EPA and state regulators from verifying compliance with permit limits.

A Monarch butterfly was observed on 2026-09-18 in Provincetown during its fall migration. The species is proposed for federal threatened listing, reflecting population declines linked to milkweed loss and habitat degradation across its range.

Eastern Milksnakes were observed twice on the Outer Cape, in Provincetown on August 4 and on Old Dewline Rd in Truro on September 21. This native species feeds primarily on other snakes including venomous species, playing an important ecological role in maintaining prey populations and native predator control on Cape Cod.

Rugosa rose, an introduced species, was recorded 32 times in the past 60 days across Cape Cod, with the latest sighting on September 5 in Truro. The species is well established in the area, particularly at the Cape Cod National Seashore.

A Monarch was observed in Provincetown on September 18. The species is proposed for federal threatened listing and was recently recorded here multiple times through mid-September, tracking its migration timing through the region.

Five Roseate Terns were documented on September 21 at Lieutenant Island. This species is federally Endangered under the Endangered Species Act (Atlantic Coast population from the U.S. to Bermuda), making each sighting significant for monitoring recovery of this threatened seabird population.

Drought arrived on Cape Cod this summer with a speed that the county-level numbers only hint at. As of early June, no part of Barnstable County registered severe drought. By mid-June that had flipped completely: the entire county sat at severe drought (D2 or worse) for five straight weeks, from June 16 through July 20. It has since eased, though just under half the county remains in that category as of the most recent reading. The swing looks even sharper set against last year. Over the same late-July stretch in 2025, moderate drought covered most of the county, but severe drought never appeared at all, week after week reading zero. This summer crossed a threshold the Cape didn't come near in 2025; it isn't simply a drier version of a normal season, it's a different category of dry. What that means on the ground is harder to pin down than the county statistic suggests. The outer Cape is tidal and lacks the network of freshwater stream gauges that would show how this drought is landing on the kettle ponds, cranberry bogs, and the Herring River system, so there's no direct local measurement of the effect on those freshwater systems yet. Many of the Cape's ponds are already prone to summer algal blooms in warm, still water, and a season with this much added dryness stress is worth watching closely even absent a gauge to confirm it. The drought's reach is also worth weighing against what else is under pressure on the ground here. Wastewater infrastructure on the Cape sits atop the same sandy, fast-draining soils that make the Atlantic Coastal Pine Barrens vulnerable to both drought and groundwater contamination alike. Separately, a 2022-cycle EPA assessment found most nearby water bodies, including the Herring River, already impaired. That is a static baseline rather than a change tied to this year's drought, but it is a reminder of how little slack these systems already have. A summer this dry, layered onto a landscape with limited freshwater monitoring, is worth tracking closely as conditions continue to shift.

Lion's mane jellies — the ocean's largest species, with tentacles trailing longer than a blue whale — have made repeated appearances along the outer beaches and harbor mouths since late May. Twenty-five documented sightings from late May through mid-July, concentrated around Herring Cove, Provincetown Harbor, Race Point, and MacMillan Pier, tell an unusual story. These are cold-water animals whose inshore presence normally collapses before midsummer as New England surface temperatures peak. Yet here they still are, with fresh sightings logged as recently as July 17. This sustained midsummer arrival likely reflects a thermal refuge — cooler water lingering in stratified layers just beneath the surface, buying these jellies weeks of extra time even as the Gulf of Maine warms faster than nearly any ocean on earth. Their trailing tentacles deliver a real sting and shelter juvenile fish seeking cover, making their presence in heavily visited waters significant for both swimmers and the young fish that depend on them for survival. How long this cold-water holdout persists against a warming sea remains an open question as summer deepens.

American Golden-Plover (Pluvialis dominica) spotted this week signals something easy to overlook in midsummer: southbound migration has already begun. This Arctic-nesting shorebird completes its breeding early or fails and heads south in July, making golden-plovers among the season's first heralds of the turn toward fall. This coastline once anchored some of the most critical staging grounds for the species in the hemisphere. Nineteenth-century market hunters slaughtered them by the thousands along the outer Cape, a pressure the population endured until federal protection arrived in the early 1900s. Today, the margin between a good refueling stop and an exhausting one can turn on a few centimeters of tide. Tides are running slightly above predicted this week, which compresses the intertidal habitat these long-distance travelers depend on to fuel their southbound journey.

Humpback whales have been sighted 52 times since January on these offshore grounds, alongside fin whales and a sei whale in July — a sign of robust prey concentrations offshore. This month alone brought fifteen great shearwaters to the surface, feeding in the same waters. The return of humpbacks to reliable abundance here carries weight. These grounds made Provincetown a legendary whaling port — and by 1900, humpbacks had been hunted nearly to disappearance from the Atlantic. For most of the twentieth century, seeing one was rare. What we're witnessing now is recovery measured not in decades but in a genuine restoration of a migratory route, as the populations rebuild and the prey base supports them again.