Wednesday, August 20, 2025 · Congress Avenue Bridge · Austin, TX
~4 mins before sunset (way before dark as storm passed to the W) ~39% of the colony flew, some went 14 miles SE while most went 18 miles NE (~9% of the total went to altitude) on N Winds at 8 mph – had been southerly 7-14 mph most of the afternoon, Mostly Cloudy, Temp 87°F, Dew Point 68°F rising, 19 Cooling Degree Days, Cloud Base 4332′, RH 53% rising, Heat Index 91°F, BP 29.94 steady, sea level pressure 1012.6 mb steady, bats viewable until 8:47 pm under streetlights
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