There are some pretty good thunderstorms sweeping across the Delmarva this morning as I write, and we had a subtle rumble of thunder out on the Weather Deck sometime around 6 a.m. Not much rain up that way - a few hundredths of an inch.

But there were some more severe AM storms today down in Charles and Prince George's counties, and some tree damage reported. College Park reported more than an inch of rain this morning. BWI airport picked up a quarter-inch of rain, bringing the official June total there to more than 2.5 inches so far.

And there will be more. That cold front to our north and west will push through the region today, triggering more showers and thunderstorms than we saw Monday. After a break late this morning, some storms late this afternoon and tonight could become severe, with large hail and damaging winds.

The unstable weather - with lots of moisture in the air and a hot sun to stir things up - is forecast to continue through the work week as this frontal boundary remains in the area. Thursday looks like an especially active day for showers and T-storms before the next cold front cross the region on Friday. Saturday looks like the only day in the forecast with no rain chances posted. By Sunday and Monday, rain chances return to around 30 percent, with daily risks of showers and thunderstorms.

My grass loves this stuff. But I confess the humidity drove us to switch on the AC last night. Yes, we caved. It's always the humidity that kicks us over the edge in the late spring, not the heat.