Flight: 8:22 pm

-6 minutes after sunset (well before dark) only ~26% of the colony flew – some went 8 miles WNW while most went 8 miles ESE (~34% of the total climbed E to altitude) into E Winds at 6 mph  – had been easterly 7-15 mph most of the afternoon with gusts to 21 mph around 5:30pm, A Few Clouds, Temp 89°F, Dew Point 68°F rising, 21 Cooling Degree Days, Cloud Base 4788, RH 50% rising, Heat Index 93°F, BP 29.89 rising, sea level pressure 1011.0 mb rising, bats viewable until 9:53 pm under streetlights