Meteorologist Armel Castellan at Environment Canada says the Pacific Blob, which had an impact on the western U-S and Canada from 2013 to 2016, has returned.
He says "some people are coining it the daughter, or the son of the blobs".
Castellan says the weather anomaly warms the ocean's surface temperature by several degrees, preventing it from mixing with the colder, nutrient rich, water below affecting marine life like salmon and whales.
He says the Pacific Blob was also a factor in the stagnant, high pressure ridges that created drought-like conditions this past summer - and it has already warmed up northern BC and Alaska.
Castellan says if you remember the end of the 1958 horror movie, "The Blob", a warmer arctic is kind of ironic.
"The teenagers solution in dealing with the Blob, because they've realized it doesn't like the cold, is they get the help of the military to capture it and bring it by helicopter up to the arctic and drop it there - but the creature's not dead, it's just stopped for now - unless the arctic doesn't stay cold," he says.
He says Alaska just recorded one its warmest Septembers in 94 years.
Castellan also says a weak El Nino is forecast for this winter that will mean less snow for the lower and mid-elevations in BC.
He adds that phenomena like the Pacific Blob are becoming more common - but it's not known how much of it is linked to climate change.