Excuse us if we're a little groggy -- but yeah, how about that thunder this morning! Turns out there was at least one lightning strike (that enormous boom everyone near downtown heard around 8:30) to a transformer near Grove and Octavia, causing a power outage. SF Appeal has a tipster who notes another transformer hit at California and Broderick causing folks in Pacific Heights to lose power. The Mercury News (the Chron is still hungover and sleeping it off) reports that the earliest outage affected 36,000 homes, and power remains out for about 500 homes. The thunderstorm, which was mostly a "dry lightning" storm but we saw some rain here, caused a few grass fires up north too. P.S. If it hadn't been for catching the weather last night, and it being September 12th, we totally would have leaped out of bed in terrorist attack mode.