-3 minutes after sunset (17 mins before dark) ~43% of the colony flew 12 miles SE (~11% of the total climbed to altitude) on N Winds at 3 mph – had been easterly 8-12 mph most of the afternoon with gusts to 21 mph around 4:30pm , Partly Cloudy, Temp 84°F, Dew Point 69°F steady, 22 Cooling Degree Days, Cloud Base 3420, RH 61% rising, Heat Index 88°F, BP 30.07 falling, sea level pressure 1017.0 mb falling, bats viewable until 9:15 pm under streetlights
Thursday July 31, 2025
ChiroptoroiumScouts 0:18, Bracken 0:32, MysticShores 0:54, Frio 1:00, Chiroptorium 1:14, JamesRiver McNeil 1:16, SanMarcos SanPedro 1:22,Seguin 1:28, SMCenterpoint 1:32, OldTunnel Frio2 1:38, Congress(~22% of the colony flew – some went 8 miles SE while most went 8 miles NE ~15% of the total climbed to altitude) 1:40, DavisBlowout WellsBranch NLamar Crestwood&IH35 Loyola WaterlooGreenway ABIA Dittmar Wimberley Lockhart Ney 1:46, SMRB(Slayden) 1:52, Temple 1:54, Rucker 2:00, JamesRiver2 2:02, US277&TX55 FosterRd 2:06, OldTunnel2 2:08, SanAngelo GrapeCreek 2:12, Huber Fern 2:14,
-4 minutes after sunset (26 mins before dark) ~22% of the colony flew – some went 8 miles SE while most went 8 miles NE (~15% of the total climbed to altitude) on S Winds at 8 mph – had been Light & Variable all afternoon , A Few Clouds, Temp 91°F, Dew Point 64°F steady, 19 Cooling Degree Days, Cloud Base 6156, RH 41% rising, Heat Index 93°F, BP 29.99 rising, sea level pressure 1014.3 mb rising, bats viewable until 9:43 pm under streetlights
Wednesday July 30, 2025
Chiroptorium 0:32, Bracken 0:46, Frio 0:54, JamesRiver 1:10, McNeil 1:16, Frio2 1:28, Chiroptorium2 1:34, SanMarcos SMCenterpoint 1:36, CongressScouts 1:38, OldTunnel DavisBlowout 1:42, WellsBranch NLamar Crestwood&IH35 Congress(~23% of the colony flew 10 miles SE ~11% of the those climbed to altitude) 1:44, Wimberley Lockhart SMRB(Slayden) 1:46, Temple 1:52, Ney 1:56, Vanderpool Rucker US277&TX55 FosterRd 2:06, SanAngelo GrapeCreek 2:12, Uvalde 2:14, BeaverCreek 2:16, Huber Fern 2:20,
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 bats have weaned their pups, so flights will start getting great soon, especially if a front moves through that stirs up insect activity.
Sunset: 8:24 pm Dark: 8:54 pm (10-20 min). earlier if cloudy) Sunrise: 6:50 am
Wednesday July 30, 2025
Flight: 8:34 pm
Scouts: 8:28 pm
-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
Tuesday July 29, 2025
Chiroptorium 0:44, Bracken 0:50, Frio 1:02, McNeil 1:16, DavisBlowout 1:34, SMCenterpoint SanPedro SALutheran Seguin 1:40, Frio2 1:44, OldTunnel Wimberley SanMarcos Camden 1:46, WellsBranch Nlamar Crestwood&IH35 Congress(~28% of the colony flew 14 miles SE – 43% of the those climbed to altitude) ABIA 1:50, Temple Lockhart SMRB(Slayden) 1:56, Ney 2:00, D’Hanis Rucker US277&TX55 2:06, JamesRiver 2:10, Huber EaglePass SanAngelo 2:18, FosterRd GrapeCreek 2:20,
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 bats have weaned their pups, so flights will start getting great soon, especially if a front moves through that stirs up insect activity.
Sunset: 8:26 pm Dark: 8:56 pm (10-20 min). earlier if cloudy) Sunrise: 6:48 am
Tuesday July 29, 2025
Flight: 8:40 pm
-13 minutes after sunset (17 mins before dark ) ~28% of the colony flew 14 miles SE (~43% of the those climbed to altitude) into S Winds at 5 mph – had been southerly 5-10 mph most of the afternoon, Fair, Temp 85°F, Dew Point 56°F rising, 20 Cooling Degree Days, Cloud Base 6612, RH 37% rising, Heat Index 84°F, BP 30.05 rising, sea level pressure 1016.4 mb rising, bats viewable until 10:11 pm under streetlights
Monday July 28, 2025
Chiroptorium 0:34, Bracken 1:04, Frio 1:16, SALutheran 1:24, SCUCISD 1:26, McNeil SchertzClemens 410&IH35 SanPedro 1:30, Camden 1:36, SMCenterpoint 1:42, Wimberley 1:48, CongressScouts 1:52, Crestwood&IH35 Congress(only ~11% of the colony flew 8 miles NE – 8% of the those went to altitude) ABIA Dittmar Lockhart 1:56, Punkin D’Hanis 1:58, OldTunnel SMRB(Slayden) 2:00, Ney 2:02, Rucker US277&TX55 2:06,