Flight: 8:36 pm

-15 minutes after sunset (just before dark with the hazy sky) ~24% of the colony flew – most went 10 miles SSW while some went 6 miles E (~29% of the total climbed E to altitude) on SE Winds at 6 mph  – had been southerly 7-13 mph all afternoon with gusts to 18 mpph around 2:30pm , A Few Clouds, Temp 88°F, Dew Point 67°F rising, 21 Cooling Degree Days, Cloud Base 4788, RH 50% rising, Heat Index 91°F, BP 29.99 steady, sea level pressure 1014.4 mb rising, bats viewable until 10:21 pm under streetlights