23 minutes after sunset (just before dark on a partly cloudy evening) only ~8% of the colony braved the windy & unstable conditions to fly 6 miles NE (3% of those went to altitude) on SE Winds at 12 mph – had been S 13-17 all afternoon with gusts to 22 mph around 6:30pm, Partly Cloudy, Temp 85°F, Dew Point 72°F steady, 20 Cooling Degree Days, Cloud Base 2964, RH 65% rising, Heat Index 91°F, BP 29.99 rising, sea level 1014.2 mb rising, bats viewable until 9:51 pm under streetlights
Saturday July 19, 2025
Rain moving SE over the eastern Hill Country, Bracken SanPedro Seguin Frio 1:30, McNeil 1:32, SCUCISD BalconesHeights 1:42, SMCenterpoint NewBraunfels SchertzClemens TX28 410&IH35 SALutheran Camden 1:46, SMRB(Slayden) Rucker 1:58, Temple US277&TX55 Fern 2:06, OldTunnel 2:08, JamesRiver D’Hanis EaglePass 2:10, Congress(only ~5% of the colony braved the unstable conditions and flew 6 miles NE – 16% of those went to altitude) 2:12 betweeen rainshowers, Huber 2:14, Stuart 2:18, other flights suppressed or readings confounded by rain
16 minutes after sunset (between rain showers) only ~5% of the colony braved the unstable conditions and flew 6 miles NE (16% of those went to altitude) on S Winds at 13 mph – had been S 9-16 mph most of the afternoon with gusts to 22mph around 2:30pm, Mostly Cloudy, Temp 88°F, Dew Point 71°F falling, 21 Cooling Degree Days, Cloud Base 3852, RH 57% rising, Heat Index 94°F, BP 30.00 steady, sea level 1014.7 mb rising, bats viewable until 9:43 pm under streetlights
Friday July 18, 2025
Outflow boundary from storm over Schulenburg arrives at I-35 corridor around 1:18 (8:10pm), Chiroptorium 1:16, Frio 1:30, McNeil 1:34, Bracken SanPedro 1:38, SanMarcos Seguin 1:44, SMCenterpoint NewBraunfels SCUCISD TX28 SchertzClemens 410&IH35 1:46, WaterlooGreenway LagunaGloria Wimberley SALutheran Camden 1:52, Lockhart SMRB(Slayden) 1:56, WellsBranch Crestwood&IH35 CongressScouts 2:00, Congress(~22% of the colony flew 8 miles ENE – 20% of those went to altitude) 2:04, OldTunnel 2:06, Huber Temple BeeCavePark Kyle D’Hanis EaglePass DelRio Rucker US277&TX55 2:10, Ney 2:14, SanAngelo 2:16, FosterRd 2:20, GrapeCreek 2:22, Stuart 2:24, JamesRiver Pearsall 2:30,
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: 8:32 pm Dark: 9:02 pm (10-20 min). earlier if cloudy) Sunrise: 6:42 am
Friday July 18, 2025
Flight: 8:52 pm
Scouts: 8:48 pm
23 minutes after sunset (just before dark) ~22% of the colony flew 8 miles ENE (20% of those went to altitude) on SE Winds at 14 mph with gusts to 24 mph – had been S 6-13 mph all afternoon, Partly Cloudy, Temp 86°F, Dew Point 71°F rising, 18 Cooling Degree Days, Cloud Base 3420, RH 61% rising, Heat Index 92°F, BP 30.01 rising, sea level 1015.1 mb rising, bats viewable until 10:07 pm under streetlights
Friday July 18, 2025
8:40 pm – 9:10 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 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: 8:33 pm Dark: 9:03 pm (10-20 min). earlier if cloudy) Sunrise: 6:41 am
Thursday July 17, 2025
NOAA’s Level I data offline, so we got to Level II data for KEWX (Austin/San Antonio – a smaller domain), Chiroptorium at 1:16, McNeil 1:34, Buda Kyle Bracken 1:38, McNeil2 SCUCISD SchertzClemens TX28 410&IH35 SanPedro 1:48, SALutheran Camden SMRB(Slayden) 1:52, Wimberley Lockhart Floresville 1:56, Crestwood&IH35 Congress(~18% of the colony flew 8 miles ENE – 8% of those went to altitude) 2:00, OldTunnel 2:10, Huber Frio 2:14,
19 minutes after sunset (close to dark on a Mostly Cloudy evening) ~18% of the colony flew 8 miles ENE (8% of those went to altitude) on SE Winds at 8 mph – had been S 7-13 mph all afternoon with gusts to 20 mph around 3:30pm, Mostly Cloudy, Temp 85°F, Dew Point 69°F rising, 19 Cooling Degree Days, Cloud Base 3648, RH 59% rising, Heat Index 89°F, BP 29.94 rising, sea level 1012.6 mb rising, bats viewable until 10:15 pm under streetlights
Wednesday July 16, 2025
Southerly flow all day, Chiroptorium 1:24, McNeil 1:34, Seguin 1:36, Bracken 1:42, SanMarcos SMCenterpoint SCUCISD 1:46, Frio 1:48, SchertzClemens TX28 410&IH35 SanPedro 1:50, SALutheran Camden SMRB(Slayden) 1:54, WellsBranch Crestwood&IH35 2:02, Congress(only ~9% of the colony flew 8 miles NNE – only 4% of those went to altitude) Wimberley Lockhart 2:04, OldTunnel Huber Temple NLamar Rucker 2:08, US277&TX55 2:16, JamesRiver SanAngelo 2:18, BeaverCreek 2:22, SanAngeloStatePark GrapeCreek 2:28, Stuart Fern FosterRd 2:30,