Flight: 8:42 pm

6 minutes after sunset ~36% of the colony rode the outflow boundary from Hill Country storms and flew 18 miles SE (only 4% of those went to altitude) surface Winds Calm – had been southerly 6-18 mph most of the afternoon (gusts to 28 mph around 5:30pm) briefly turning N with a Thunderstorm around 2:30 pm , Overcast, Temp 76°F, Dew Point 70°F steady, 17 Cooling Degree Days, Cloud Base 1368′, RH 82% rising, Heat Index 77°F, BP 30.02 steady, sea level 1015.8 mb steady, bats viewable until 9:47 pm under streetlights