BOM declares cyclone watch for NT communities with Tropical Cyclone Narelle set to hit on Saturday

A dark storm cloud over a remote highway.

Severe Tropical Cyclone Narelle is expected to cross into the NT from Saturday. (ABC News: Olivana Lathouris)

In short:

Severe Tropical Cyclone Narelle is expected to cross into the NT from late Saturday, with Groote Eylandt, Numbulwar, Borroloola, Ngukurr, Gapuwiyak and Bulman now issued a cyclone watch.

Hundreds of people from the remote community of Numbulwar are in the process of being evacuated to Darwin.

What's next?

Authorities are urging residents of NT communities in the cyclone's path to start preparing now.