Flight: 8:28 pm

-11 minutes after sunset (well before dark) ~47% of the colony flew – most went 12 miles SSW while some went 6 miles NE (~29% of the total climbed E to altitude) on SE Winds at 15 mph  – had been southerly 7-10 mph most of the afternoon with gusts to 28 mph around 7:30 pm, A Few Clouds, Temp 88°F, Dew Point 70°F falling, 21 Cooling Degree Days, Cloud Base 4104, RH 55% rising, Heat Index 93°F, BP 29.94 rising, sea level pressure 1012.5 mb rising, bats viewable until 10:13 pm under streetlights