Thwarted by the weather as they tried to secure a third win from as many Championship matches against Kent last weekend, Lancashire had to spend rather longer than they would have liked contemplating a familiar Manchester sky before Kyle Hogg compensated for the absence of Saj Mahmood.
No play was possible before lunch through persistent drizzle and the contest was advanced only negligibly in the afternoon before another two-hour stoppage for bad light.
When the players did emerge for an extended final session it was without Mahmood, who stayed off the field despite assurances that the injury he suffered while batting on Tuesday was only minor. Hogg, meanwhile, seized an opportunity he did not expect until all-rounder Tom Smith cried off with a hamstring pull on Tuesday.
The 26-year-old has still not properly delivered on the promise he showed as a teenager, when for a while he seemed to be matching strides with Jimmy Anderson. Injury problems have not helped Hogg's confidence but his brisk medium pace benefits from his being 6ft 4ins tall and he is enjoying himself on a pitch with variable bounce.
Successful with the last ball on Tuesday, Hogg struck again with the second ball of the day as Nick Compton, playing forward, nudged a thin edge through to wicketkeeper Luke Sutton.
Marcus Trescothick led a Somerset recovery with a 107-ball half-century but when Hogg switched to the Stretford End he surprised the left-hander with extra bounce. Trescothick gloved a catch to Sutton, ending a partnership of 101 with Zander de Bruyn, who was leg before to left-arm spinner Simon Kerrigan two short of a half-century.