Durham-born Welch took 477 wickets at an average of 31.51, in a first-class career with the Bears and Derbyshire that spanned 12 years before he began his coaching career at Chelmsford.
This summer he helped guide Hampshire to Finals Day in the T20 Blast and also coached at Southern Brave as they finished fourth in the men’s Hundred.
“I’ve been fortunate to spend the last few years working across all formats of the game, learning from different environments, and adding new ideas to my coaching,” Welch said., external
“Coming back to Warwickshire, my focus is on raising performance levels in the First XI while at the same time developing the young, talented bowlers we’ve got coming through.
“This club has always meant a lot to me, and I’m excited to contribute to building a bowling group that can succeed now and in the future.”