Thursday, July 31, 2025 · Congress Avenue Bridge · Austin, TX
-8 minutes after sunset (16 mins before dark) ~23% of the colony flew 10 miles SE (~11% of the those climbed to altitude) into SE Winds at 6 mph – had been southerly 7-9 mph most of the afternoon – swinging to the N from 1pm-3pm , Partly Cloudy, Temp 83°F, Dew Point 56°F rising, 17 Cooling Degree Days, Cloud Base 6156, RH 40% rising, Heat Index 82°F, BP 29.97 rising, sea level pressure 1013.7 mb rising, bats viewable until 9:39 pm under streetlights
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