When conditions allow, i.e. when temps are >50°F, Dew Point >45°F, Heating Degree Days <9, atmosphere stable, no pressure drops, no strong wind, no rain in the area.
Chance of a good flight if conditions stable, but likely after dark
Sunset: 8:29 pm
Dark: 8:59 pm (10-20 minutes earlier if cloudy)
Sunrise: 6:29 am
26 minutes after sunset, ~69% of the colony flew 30 miles ESE (~30% of those flew to altitude) on SE Winds at 13 mph with gusts to 21 mph – had been southerly 12-18 mph all afternoon with gusts to 26 mph around 2:30pm, Visibility 10 miles, Mostly Cloudy, Temp 87°F, Dew Point 73°F steady, 22 Cooling Degree Days, Cloud Base 3192′, RH 63% rising, Heat Index 95°F, BP 29.78 rising, sea level 1007.3mb rising, bats viewable until 10:23 pm under streetlights
Fern showing signs of stress at 0:52, Rucker 1:18, Frio 1:22, Bracken Sabinal 1:44, Stuart 1:46, SchertzClemens Seguin 1:54, BalconesHeights 2:02, McNiel 2:06, OldTunnel Chiroptorium Camden Culebra&Bandera 2:08, DavisBlowout Huber 2:14, CongressScouts 2:20, Congress(only ~4% of the colony flew 6 miles NNE) 2:48,
~80 minutes after sunset (way after dark) ~6% of the colony flew 3 miles W (~38% went to altitude) on S Winds at 12 mph – had been SE 13-17 mph most of the afternoon with gusts to 22 mph around 4pm, Partly Cloudy, Temp 85°F, Dew Point 74°F rising, Visibility 10 miles, 21 Cooling Degree Days, Cloud Base 2508′, RH 70% rising, Heat Index 93°F, BP 29.77 rising, bats viewable until 11:13 pm under streetlights
Storms over the TransPecos with rain extending to SanAngelo & Junction, strong storms between Waco & Dallas, Frio 1:30, Punkin 1:32, Stuart 1:42, Bracken Timberwood 1:48, SchertzClemens 1:56, NewBraunfels TX28 Camden Culebra&BanderaRd 2:02, EaglePass 2:06, Chiroptorium SCUCISD 410&IH35 BalconesHeights 2:10, NuecesRR SmythCrossing 2:12, DavisBlowout Huber 2:14, OldTunnel 2:16, McNeil 2:34, CongressScouts 2:44, Congress(~6% of the colony flew a few miles W) 2:56,
~48 minutes after sunset (after dark) ~21% of the colony flew 6 miles SE into SE Winds at 7 mph – had been southerly 3-9 mph most of the afternoon with gusts to 21 mph around 5pm, Temp 85°F, Dew Point 77°F rising, Visibility 10 miles, Mostly Cloudy, 16 Cooling Degree Days, Cloud Base 1824′, RH 77% rising, Heat Index 96°F, BP 29.87 rising, bats viewable until 12:31 am under streetlights
Outflow boundary passes Temple early, widespread rain moving into western HillCountry, Frio 1:24, Stuart 1:34, Bracken 1:46, Chiroptorium Randolph TX28 2:00, Huber 2:04, OldTunnel SCUCISD SchertzClemens Camden 2:08, SanMarcos 2:10, DavisBlowout McNeil 2:12, 410&IH35 Seguin 2:14, D’Hanis 2:16, CongressScouts 2:20, Congress(~21% of the colony flew 6 miles SE) 2:24, UT Dittmar Fern 2:28,