GoBoB Chasing

After an enjoyable day on the lake, I’m trying to decide if Saturday is a chase day. Saturday is looking like the first real chase day of the 2009 season. Models have come into better agreement. Deep layer sheer looks reasonable with effective shear 0f 40-45 knots. Mixed CAPE looks good between 1500-2000 J/Kg. More impressively the 0-1km storm relative helicities of 150-250 m^2/S^2 before 7:00 PM CDT. The problem is the lower level jet stream doesn’t really kick in till after dark. There will be strong tornadoes but nobody may see them; and let’s not forget lots of hail. Every chaser in the world will be out there so this will just add to the fun.