Speaking from a town near Beersheba, Noach said that many of the residents had moved to a nearby graveyard to find shade.
He said Israeli authorities had first given residents of al-Arakib a notice to evacaute on June 15, but that no action had followed, so the residents began to doubt that the demolition would occur.
But this morning, Israeli police arrived and forced residents to leave their homes within minutes, Noach said.
The demolition team destroyed water tanks and removed generators.
"It's like a declaration of war. They don't want you here," Noach said. "It's unthinkable."
The residents are now waiting for aid and will probably set up makeshift tents and facilities on the scene, Noach said.
According to the Negev Co-existence Forum,around half of the 155,000 Bedouins in the Negev - all of whom are Israeli citizens - live in villages that are unrecognised by the government.