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Bat Flight Prediction

Wednesday August 20, 2025

Thursday, August 21, 2025 · Congress Avenue Bridge · Austin, TX

Flight: 8:10 pm

~3 mins after sunset (7 minutes before dark on a Mostly Cloudy evening) ~1,438,337 flew 18 miles S (~34% of them went to altitude) on NE Winds at 12 mph – had been northerly 12-13 mph early – increasing to N at 32 mph around 4:30pm, Mostly Cloudy, Temp 88°F, Dew Point 72°F falling, 20 Cooling Degree Days, Cloud Base 3648′, RH 59% rising, Heat Index 95°F, BP 29.89 steady, sea level pressure 1011.0 mb rising, bats viewable until 9:23 pm under streetlights

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