The Pups Are Flying! – 14 minutes after sunset (16 mins before dark) ~749.5k (~50% of the colony flew) – some went 8 miles E while most went 12 mile SSW (28% of the total went to altitude) on SE Winds at 8 mph – had been southerly 6-12 mph most of the afternoon with gusts to 18 mph around 4:30pm, A Few Clouds, Temp 91°F, Dew Point 66°F rising, 21 Cooling Degree Days, Cloud Base 5700, RH 44% rising, Heat Index 94°F, BP 29.94 rising, sea level 1012.5 mb rising, bats viewable until 10:21 pm under streetlights
Wednesday July 23, 2025
Chiroptorium 0:18, Bracken 0:54, JamesRiver 1:16, McNeil 1:22, Frio 1:24, SanPedro 1:26, Seguin 1:28, SALutheran 1:34, SanMarcos SMCenterpoint 1:36, SchertzClemems TX28 BalconesHeights 1:40, OLdTunnel Camden SMRB(Slayden) 1:48, WellsBranch Nlamar Crestwood&IH35 CongressScouts 1:50, Congress(~22% of the colony flew – some went 6 miles NE while most went 12 mile SE – 30% of the total went to altitude) Wimberley Lockhart 1:54, Temple Loyola ABIA 1:56, Rucker 1:58, D’Hanis Fern 2:06, Huber 2:10, EaglePass GrapeCreek 2:12, SanAngelo FosterRd OCFisher 2:16,
15 minutes after sunset (15 mins before dark) ~22% of the colony flew – some went 6 miles NE while most went 12 mile SE (30% of the total went to altitude) on S Winds at 10 mph – had been southerly 9-16 mph all afternoon with gusts to 28 mph around 4:30 pm, A Few Clouds, Temp 90°F, Dew Point 70°F rising, 21 Cooling Degree Days, Cloud Base 4560, RH 51% rising, Heat Index 96°F, BP 29.98 rising, sea level 1013.9 mb rising, bats viewable until 10:17 pm under streetlights
Tuesday July 22, 2025
Storms heading N between DelRio and Uvalde, rain heading NE toward SanAngelo, Chiroptorium 0:34, Bracken 0:58, SanPedro Frio 1:16, McNeil 1:22, SALutheran 1:26, SanMarcos SCUCISD 1:30, SchertzClemens TX28 5410&IH351:34, Wimberley Seguin 1:44, Crestwood&IH35 1:48, Lockhart SMBR(Slayden) 1:50, WellsBranch NLamar WaterlooGreenway D’Hanis 1:52, OldTunnel Congress(~16% of the colony flew – some went 6 miles NNE while most went 8 mile ESE -32% of the total went to altitude) 1:54, Temple Loyola 1:58, Vanderpool 2:04, Huber 2:12, rain & storms out west suppress or confound readings of other flights
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 are starting to wean their pups, so flights may pick up soon, especially if a front moves through that stirs up insect activity.
Sunset: 8:29 pm Dark: 8:59 pm (10-20 min). earlier if cloudy) Sunrise: 6:45 am
Tuesday July 22, 2025
Flight: 8:46 pm
15 minutes after sunset (well before dark on a partly cloudy evening) ~16% of the colony flew – some went 6 miles NNE while most went 8 mile ESE (32% of the total went to altitude) on S Winds at 12 mph – had been S 9-15 mph all afternoon with gusts to 23 around 3:30pm, Partly Cloudy, Temp 90°F, Dew Point 68°F rising, 22 Cooling Degree Days, Cloud Base 5016, RH 48% rising, Heat Index 94°F, BP 29.95 rising, sea level 1012.7 mb rising, bats viewable until 10:15 pm under streetlights
Monday July 21, 2025
Chiroptorium 0:32, Bracken 1:12, DavisBlowout 1:14, Frio 1:18, SanMarcos SMCenterpoint NewBraunfels SCUCISD SchertzClemens TX28 410&IH35 SanPedro SALutheran 1:36, Seguin 1:40, Wimberley 1:46, Camden 1:50, Rucker EaglePass 1:54, WellsBranch Crestwood&IH35 1:56, D’Hanis 1:58, Congress(~33% of the colony flew 8 miles ENE – 11% of those went to altitude) Lockhart SMRB(Slayden) DelRio 2:00, Huber Temple BeeCavePark Loyola Dittmar Ney 2:04, GrapeCreek 2:10, SanAngelo FosterRd OCFisher 2:16, Fern 2:22,
20 minutes after sunset (10 mins before dark on a partly cloudy evening) ~33% of the colony flew 8 miles ENE (11% of those went to altitude) on S Winds at 14 mph with gusts to 22 mph – had been S 12-17 mph all afternoon, Partly Cloudy, Temp 88°F, Dew Point 68°F falling, 20 Cooling Degree Days, Cloud Base 4560, RH 52% rising, Heat Index 92°F, BP 29.93 rising, sea level 1012.3 mb rising, bats viewable until 10:21 pm under streetlights
Sunday July 20, 2025
Rainshowers moving SSW on the W side of IH5, more showers moving NE on the E side of IH35, McNeil 1:22, Bracken 1:26, SanMarcos SanPedro SALutheran Frio 1:32, NewBraunfels SCUCISD TX28 Camden 1:38, SMCenterpoint SchertzClemens 410&IH35 1:44, Wimberley 1:52, WellsBranch NLamar Crestwood&IH35 Rucker 1:58, Congress(only ~8% of the colony braved the windy & unstable conditions to fly 6 miles NE – 3% of those went to altitude) 2:02, Temple 2:04, EaglePaas 2:06, GrapeCreek 2:10, Stuart 2:12, SanAngelo OCFisher FosterRd 2:18, other filghts suppressed or readings confounded by weather
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 are starting to wean their pups, so flights may pick up soon, especially if a front moves through that stirs up insect activity.
Sunset: 8:31 pm Dark: 9:01 pm (10-20 min). earlier if cloudy) Sunrise: 6:43 am