Flight: 8:22 pm

31 mins after sunset (about at dark) ~44% of the colony flew – some went 4 miles SW while most went 12 miles SE (~21% of them went to altitude) on N Winds at 7 mph – had been northerly 9-15 mph all afternoon with gusts to 21 mph around 4:30pm, Partly Cloudy, Temp 88°F, Dew Point 56°F rising, 18 Cooling Degree Days, Cloud Base 7296′, RH 34% rising, Heat Index 86°F, BP 29.85 steady, sea level pressure 1009.8 mb rising, bats viewable until 10:35 pm under streetlights