Rain continues to play havoc
More widespread rain across the United Kingdom meant play was possible in only half of the eight LV= County Championship games.
Warwickshire returned to the top of Division One as their game with Durham, into its final day, was drawn.
Last season's runners-up gained six points to go clear of second-placed Nottinghamshire, while Durham collected eight but stayed bottom of the table.
The Emirates Durham ICG hosts, who had three second-innings wickets left, were 227 ahead with Paul Collingwood unbeaten on 29 and Scott Borthwick 15 in a total of 147 for seven.
Nick Compton and Peter Trego struck half-centuries, the former's unbeaten, as Somerset prevented Middlesex from moving to the top of Division One at Lord’s.
Middlesex declared their first innings on an overnight 364 for three, leaving Joe Denly on 116 and Eoin Morgan two.
Needing 191 to avoid an innings defeat, Somerset slumped to 113 for five after Toby Roland-Jones’ double strike. But Compton and Trego edged their side closer to safety with a sixth-wicket stand of 63.
Even when Tim Murtagh removed Trego for 50 and Craig Overton four balls later, Somerset survived as Compton and Alfonso Thomas took the score to 227 for seven, a lead of 37, with 69 and 39 respectively.
Luke Wells’ century and some valuable lower-order resistance gave Sussex a strong chance of victory heading into the final day at Horsham.
After Surrey seamer Stuart Meaker had reduced Sussex to 87 for six yesterday, Wells and Naveed Arif Gondal took the hosts into a first-innings lead with a stand of 85.
Gondal and Steve Magoffin both made 34 before Wells departed to Murali Kartik for a wonderful 127 from 277 balls.
A last-wicket stand of 80 between James Anyon and Monty Panesar, who made 64 not out and 31 respectively, gave Sussex a lead of 227.
Magoffin removed Jason Roy for 35 as Surrey were reduced to 39 for one at the close, still trailing by 188.
Lancashire tailenders Kyle Hogg and Simon Kerrigan continued to frustrate Nottinghamshire in the 12.5 overs that were available at Trent Bridge.
The pair took their unbroken last-wicket stand to 70 by adding another 41 to the Red Rose’s overnight 272 for nine, with Hogg unbeaten on 44 and Kerrigan 22 not out at stumps.
Division Two leaders Derbyshire’s game with Leicestershire at Grace Road was drawn, with no prospect of play on the final day.
The visitors, who were 259 for five in their first innings with Dan Redfern unbeaten on 81 and David Wainwright on 45, took eight points. Second-from-bottom Leicestershire, who posted 177 all out, picked up only four.
Stumps were drawn for day three at Colwyn Bay and Northampton before lunch, while there was only 44.2 overs played at Tunbridge Wells.
Glamorgan - playing Yorkshire - were 117 for three in north Wales, with Stewart Walters 37 not out and Ben Wright on 10.
In the Midlands, Essex were 195 for four versus Northamptonshire, Ravi Bopara and James Foster still unbeaten on 87 and 60 respectively.
Liam Dawson struck an unbeaten 111 as Hampshire’s match with Kent looked to be heading for a tame draw.
Dawson, starting the day with 22 of Hampshire's 90 for three, enjoyed a 99-run stand with Simon Katich, who made 54 before becoming James Tredwell’s first victim.
After Matt Coles bowled Sean Ervine for a duck, Michael Bates made 30 in a partnership of 59 with Dawson as Hampshire closed on 229 for six in their first innings.