Update: 3:28PM A TROPICAL cyclone is forming over the Gulf of Carpentaria, with the Bureau of Meteorology warning of increasingly dangerous weather in coming days.

The weather bureau is forecasting the tropical low to form into a category-1 cyclone in the southwest of the gulf on Sunday.

As rainfall eases in Darwin, it is likely the gulf region, between Port Roper and the NT/Queensland border will be experiencing gale-force winds.

Potentially damaging winds and rain are also expected Groote Eylandt.

“It is moving slower than we predicted … but there?s over a 50 per cent chance of it forming late in the day on Saturday or on Sunday,” BOM forecaster Gordon Banks said.