when conditions allow, i.e. when the atmosphere is stable, no pressure drops, no strong wind or rain in the area, If conditions look good (low or no wind), get there early! The Congress bat pups have taken to the wing, so flights can be great nowadays, especially if a front moves through that stirs up insect activity.
Sunset: 8:01 pm Dark: 8:31 pm (10-20 min). earlier if cloudy) Sunrise: 7:04 am
Sunday August 24, 2025
Flight: 8:28 pm
24 mins after sunset (about dark on a Partly Cloudy afternoon) ~932,300 flew – some went 6 miles N while most went 8 miles S (~44% of the total went to altitude) Winds Variable at 5 mph – had been NE 10-14 mph most of the afternoon with gusts to 26 mph around 5:30pm, Partly Cloudy, Temp 88°F, Dew Point 62°F falling, 20 Cooling Degree Days, Cloud Base 5928′, RH 42% rising, Heat Index 88°F, BP 29.94 rising, sea level pressure 1012.7 mb rising, bats viewable until 11:51 pm under streetlights
Saturday August 23, 2025
Frio 1:12, Chiroptorium Bracken 1:14, OldTunnel SchertzClemens 410&IH35 1:22, Randolph TX28 SanPedro SALutheran Camden Seguin 1:30, NewBraunfels Fern 1:32, SanMarcos SMCenterpoint Wimberley 1:36, Stuart 1:38, Huber McNeil Loyola Crestwood&IH35 Congress(only ~31% of the colony braved the pop-up rave in the parking lot and flew 12 miles S ~43% of them went to altitude) Dittmar SMRB(Slayden) 1:42, Floresville D’Hanis 1:46, DavisBlowout Temple 1:48, Ney Rucker 1:50, SanAngelo 1:52, EagelPass 1:56, GrapeCreek 2:04,
when conditions allow, i.e. when the atmosphere is stable, no pressure drops, no strong wind or rain in the area, If conditions look good (low or no wind), get there early! The Congress bat pups have taken to the wing, so flights can be great nowadays, especially if a front moves through that stirs up insect activity.
Sunset: 8:02 pm Dark: 8:32 pm (10-20 min). earlier if cloudy) Sunrise: 7:03 am
Saturday August 23, 2025
Flight: 8:34 pm
31 mins after sunset (after dark) only ~31% of the colony braved the pop-up rave in the parking lot and flew 12 miles S (~43% of them went to altitude) on E Winds at 5 mph – had been NE 6-16 most of the afternoon with gusts to 23 mph around 3:30pm, Partly Cloudy, Temp 90°F, Dew Point 63°F falling, 18 Cooling Degree Days, Cloud Base 6156′, RH 41% rising, Heat Index 91°F, BP 29.93 rising, sea level pressure 1012.2 mb rising, bats viewable until 11:25 pm under streetlights
Friday August 22, 2025
Storms heading SW toward Temple NewBraunfels Junction Concan and DelRio, Bracken 1:10 on the edge of a storm, Frio 1:10, Randolph 1:22, OldTunnel TX28 410&IH35 SanPedro SALutheran Camden 1:28, Chiroptorium Ney 1:34, McNeil Congress(~50% of the colony rolled the dice on the storm dissipating to the E and flew 14 miles SSW ~38% of them went to altitude) 1:38, Dittmar Onion Wimberley SMRB(Slayden) 1:40, Huber Floresville 1:46, Stuart SanAngelo 1:50, DavisBlowout 1:52, D’Hanis Fern 1:54, GrapeCreek 1:56, FosterRd 1:58,
when conditions allow, i.e. when the atmosphere is stable, no pressure drops, no strong wind or rain in the area, If conditions look good (low or no wind), get there early! The Congress bat pups have taken to the wing, so flights can be great nowadays, especially if a front moves through that stirs up insect activity (like last night).
Sunset: 8:04 pm Dark: 8:34 pm (10-20 min). earlier if cloudy) Sunrise: 7:03 am
Friday August 22, 2025
Flight: 8:30 pm
25 mins after sunset (after dark on an Partly Cloudy evening) ~50% of the colony rolled the dice on the storm dissipating to the E and flew 14 miles SSW (~38% of them went to altitude) on SE Winds at 8 mph – had been northeasterly 8-13 mph all afternoon increasing to 20 mph with gusts to 31 mph around 5:30pm, Partly Cloudy, Temp 85°F, Dew Point 69°F steady, 19 Cooling Degree Days, Cloud Base 3648′, RH 59% rising, Heat Index 89°F, BP 29.92 rising, sea level pressure 1012.2 mb rising, bats viewable until 11:05 pm under streetlights
Friday August 22, 2025
8:05 pm – 8:35 pm
when conditions allow, i.e. when the atmosphere is stable, no pressure drops, no strong wind or rain in the area, If conditions look good (low or no wind), get there early! The Congress bat pups have taken to the wing, so flights can be great nowadays, especially if a front moves through that stirs up insect activity (like last night).
Sunset: 8:05 pm Dark: 8:35 pm (10-20 min). earlier if cloudy) Sunrise: 7:02 am
Thursday August 21, 2025
Storms heading SSW early from SanSaba to Austin dissipating prior to reaching IH10 or SanAntonio, outflow boundary hits Bracken at 0:20, Frio 0:38, Bracken 0:56, OldTunnel SaladoCreek&MLKdrive 1:10, Chiroptorium SanPedro Camden 1:22, TX28 410&IH35 1:24, McNeil SCUCISD SchertzClemens BalconesHeights SALutheran Ney 1:28, SanMarcos SMCenterpoint 1:32, Congress(~1,565,993 flew 12 miles SSW ~34% of them went to altitude) 1:36, Stuart 1:38, D’Hanis 1:46, FosterRd 1:50, SanAngelo 1:56, GrapeCreek 2:02, Fern 2:14, other potential flights suppressed or readings confounded by weather