Josh Llewellyn set up the first for Jake Reid and then scored the second himself as “the terrible twins” – the nickname they were christened with by manager Ian Hutchinson last week – proved to be the difference between the two sides.

Even though the Magpies forced 16 corners they only seriously troubled Ryan Harrison once and Simon Radcliffe sent the travelling fans back across the Ridgeway with their tails between their legs with the third goal, midway through the second half.

Between 200 and 300 visiting supporters made the short trip, swelling the gate to 1,032, and cranked the atmosphere up at the start by unveiling a banner that read: “Weymouth – a town with no history, a club with no future.”

But it is Dorchester who have no future in the FA Trophy after going down 3-0 at the Wessex Stadium in this third qualifying round tie, leaving the home fans celebrating their neighbours’ demise.

Weymouth named an unchanged starting 11, meaning the returning trio of Chris Allen, Scott Dixon and Dean Smith were only worth a place on the bench.

Dorchester made two changes, with Ashley Vickers returning from suspension in place of Neil Martin, meaning Ollie Barnes shifted across to left-back. Andre McCollin was also rewarded with a start on the left wing, in place of fellow Yeovil loanee Louis Lavers, following his match-changing contribution at home to Worcester last week.

It took just 48 seconds for the first opportunity to be created, when Radcliffe’s right-wing free-kick had just too much height on it for Jordan Rose to direct it towards goal at the back post.

The wet and windy conditions did not allow either side to settle as the match stuttered along like a typical derby.

Dorchester struggled as much as Weymouth to create anything and only had a deflected Mark Jermyn shot, which was followed by two corners, to show for their endeavours.

Llewellyn tangled with Vickers when chasing a high ball, but the only shouts for a penalty were being made by those gathered in the Carlsberg Stand behind Regan Coward’s goal.

But the Terras’ front man was involved when Weymouth made the breakthrough in the 25th minute.

Reid showed some neat skill and flicked over the top into the right channel for Llewellyn, who held the ball up and returned it to his onrushing strike partner. Reid barely had to break stride before he smashed the ball beyond Coward at his near post, much to the delight of the ecstatic home supporters.

The county town side tried to respond but Vickers missed from two set-pieces – he had a header deflected beyond the left angle of the goal and then saw Steve Devlin’s corner, which had been missed by Harrison, bounce of his legs and wide.

Jermyn fired over after a mistake from Jamie Frampton but the Terras’ full-back more than made amends with a goal-saving tackle on Devlin.

McCollin, who swapped sides with Devlin midway through the half, should have made himself a chance but gave the ball straight to Slocombe when he only needed to touch it beyond the full-back and run clear.

The Yeovil loanee was nearly made to pay when Vickers slipped, releasing Llewellyn on the right, but Simon Radcliffe could not make proper contact on the striker’s low cross and Coward gathered comfortably.

Rose shot straight at Coward from distance when a pass through would have been the better option and Gary Bowles barely tested Harrison with a similar effort.

Bowles had to be alert at the other end to block Llewellyn’s shot after another slip from Vickers, but three-quarters of the Wessex Stadium greeted the half-time whistle with a cheer.

The Magpies’ assistant-manager was hauled off by Roy O’Brien at half-time, to be replaced by Neil Martin, and the visitors came out after the break with their manager’s words ringing in their ears as they forced two corners inside the opening 90 seconds.

However, they could not keep it up and Phil Walsh nearly gifted the home side a second when Radcliffe latched on to the defender’s wayward pass across goal, but could only blaze over.

Walsh did force Harrison into the best save of the match when his header from Selley’s corner was tipped over, but the Terras doubled their lead thanks to a little help from the weather.

Rose’s floated cross caught in the wind, deceived Coward, came back off a post and Llewellyn was on hand to fire low into the bottom right-hand corner – an important time to score his first goal for the club.

Weymouth needed just two more minutes to put themselves out of sight when Ollie Barnes slipped, allowing Terra Matt Groves to cut in from the right and square to Radcliffe.

The Terras’ winger had the freedom of the penalty area to pick his spot and clip over Coward, a goal which saw tempers flare in the stands and the Weymouth supporters start chanting, “we want eight”.

Youngsters Louis Lavers and Jamie Symes, making his debut at just 16, were thrown on for the visitors but it made little difference, even though Symes nearly crafted a goal before Frampton’s important tackle.

Weymouth’s Groves fired narrowly wide after exchanging passes with Radcliffe before being replaced by Chris Allen to a standing ovation.

Llewellyn was handed similar treatment by the Wessex Stadium faithful, but the biggest cheer was saved for the final whistle and the Terras left the field to rapturous applause.