Monday, September 8, 2025 · Congress Avenue Bridge · Austin, TX
30 mins after sunset (well after dark on a Mostly Cloudy evening) ~53% of the colony flew 12 miles SSW (12% of them went to altitude) on NE Winds at 3 mph – had been northeasterly 5-9 mph with Light Rain most of the afternoon, Mostly Cloudy, Temp 74°F, Dew Point 71°F steady, 9 Cooling Degree Days, Cloud Base 684′, RH 91% rising, Heat Index 75°F, BP 30.09 rising, sea level pressure 1018.1 mb rising, bats viewable until 10:25 pm under streetlights
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