That put beaten Twenty20 finalists Somerset through to their second one-day final of the season.
Somerset seamer Thomas then struck immediately when he had Pettini caught at mid off off his first ball.
Earlier, Marcus Trescothick, Ian Blackwell and Peter Trego scored centuries to lift Somerset to 469.
Plans for 16, 000 new homes across south Somerset are being scrutinised by a planning inspector.
Only three counties have squads which have no ICL connections - Somerset, Essex and Middlesex.
Project director for NHS Somerset, Simon Corrick, said the build was going "very smoothly".
The balance is being met by NHS Somerset and Somerset Partnership NHS Foundation Trust.
Royal Marines from a Somerset barracks have returned home after a final six-month deployment in Afghanistan.
Councillors at West Somerset must agree on the plan before it can go forward.
It covers Bath and the surrounding towns and villages in North East Somerset and Western Wiltshire.
All schools in South Gloucestershire, North Somerset and Bath and North East Somerset were closed.
Somerset County Council said the road would also help with the regeneration of the Firepool area.
This would include forces from Dorset, Avon and Somerset, Wiltshire, Gloucestershire and Devon and Cornwall.
Temperatures fell to -11C (12F) in parts of Somerset overnight, but no more snow fell.
West Somerset Council said it had received several requests to extend the deadline from 12 January.
The case was referred by Avon and Somerset Constabulary to the Independent Police Complaints Commission.
North Somerset Council has said terms have been built into the contract to help avoid disruption.
The first nuclear site licence for 25 years has been granted to Hinkley Point in Somerset.
BBC: Hinkley Point nuclear station: Licence granted for site
Mr Ferguson has no plans to report the matter to Avon and Somerset Police.
The same intimate approach will be applied to aspects of the Valentino show in Somerset House.
WSJ: The Ecstasy of Influence | Innovator of the Year 2012 Design
North Somerset is the only authority in the force area which has not adopted CPE.
It has land and estates in 23 counties, including: Cornwall, Devon, Dorset, Somerset, Wiltshire and Gloucestershire.
Bath and North East Somerset (Banes) Council has introduced the speed limit in Twerton and Southdown.
The firm has referred all queries about the gasometer's demolition to North East Somerset Council (Banes).
Should the Indian Premier League team prevail, Somerset's poor net run-rate could well ruin their chances.
The Labour Party's manifesto for Somerset lays out its vision for equality, opportunity and sustainability.
"We would expect to have a pretty full attendance again, " Starnes told BBC Somerset.
Zak King, 22, of Street, Somerset, was also found not guilty of violent disorder.
Somerset County Council is set to lose about 5% of government funding for 2013-14.
BBC: Somerset County Council: Union fear over job cuts plans
In the last decade, the amount of waste being produced in Somerset has been falling steadily.
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