Flight:  9:26 pm
Scouts:

~66 minutes after sunset (36 minutes after dark) only ~13% of the colony flew 6 miles NW on SE Winds at 8 mph – had been southerly 6-8 mph all afternoon, Temp 85°F, Dew Point 70°F steady, Visibility 10 miles, A Few Clouds, 13 Cooling Degree Days, Cloud Base 3420′, RH 61% rising, Heat Index N/A and rising, BP 29.89 rising, bats viewable until 11:13 pm under streetlights

Frio 1:40, Stuart 1:40 as front arrives from SE, Bracken Fern 1:52, ICUCISD ScherzClemens Camden GovernmentCanyon 1:58, TXX28 410&IH35 GrapeCreek SanAngelo 2:06, FosterRd 2:10, OldTunnel Huber 2:12, DavisBlowout EaglePass 2:16, D’Hanis SmythCrossing 2:20,McNeil Congress(only ~13% flew 6 mile NW) 2:34, JamesRiver 2:44,

8:45pm – 9:15 pm
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: 8:20 pm
Dark: 8:50 pm (10-20 minutes earlier if cloudy)
Sunrise: 6:35 am 

Flight:  8:58 pm
Scouts:

~36 minutes after sunset (just after dark) ~50% of the colony flew 10 miles ESE (~24% flew to altitude) into E Winds at 4 mph – had been northerly 6-10 most of the afternoon, Temp 76°F, Dew Point 68°F rising, Visibility 10 miles, Partly Cloudy, 8 Cooling Degree Days, Cloud Base 1824′, RH 77% rising, Heat Index 77°F, BP 29.77 rising, bats viewable until 11:07 pm under streetlights

Storms over RockSprings & US90W dissipating as they head east – the tail end of a system that battered Houston with a derecho that raced across the Gulf to Florida, SanPedro 1:20, Frio 1:38 rides straight-line winds to SA/Pearsall around midnight, Bracken 1:44, SCUCISD SchertzClemens 4410&IH35 1:50, TX28 FosterRd 1:56, SanAngelo 1:58, Chiroptorium McNeil 2:00, Huber 2:02, Congress(~50% of the colony flew 10 miles ESE, 2:06, GrapeCreek 2:08, OldTunnel DavisBlowout Lockhart 2:18, Fern 2:20 after storm passes,

8:50pm – 9:20 pm
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: 8:19 pm
Dark: 8:49 pm (10-20 minutes earlier if cloudy)
Sunrise: 6:35 am 

Flight:  9:12 pm
Scouts: 8:58 pm

54 minutes after sunset (after dark) ~15% of the colony headed 12 miles SW on E Winds at 10 mph with gusts to 20 mph – had become northerly 8-22 mph around 3pm with gusts to 38 mph around 4pm, Temp 69°F, Dew Point 64°F steady, Visibility 10 miles, Overcast, 9 Cooling Degree Days, Cloud Base 1140′, RH 84% steady, Heat Index N/A, BP 29.73 rising, bats viewable until 10:07 pm under streetlights

Strong storms across the northern Hill Country moving ESE on passing N of RoundRock around 10pm another bringing rain to Austin and storm to Bracken around midnight, Frio 1:10, SchertzClemens Seguin 1:40, TX28 1:44, Bracken Fern 1:46, 410&IH35 1:50, SanMarcos 1:52, SMCenterpoint 1:54, Wimberley SALutheran 1:56, Stuart Rucker 2:00, McNeilScouts NLamar EaglePass 2:04, CongressScouts 2:06, Huber SmythCrossing 2:10, OldTunnel Congress(~15% of the colony flew 12 miles SW) 2:20, McNeil 2:28,

8:50pm – 9:20 pm
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: 8:18 pm
Dark: 8:48 pm (10-20 minutes earlier if cloudy)
Sunrise: 6:36 am 

Flight:  9:08 pm
Scouts: 9:02 pm

~50 minutes after sunset (after dark) ~83% of the colony flew 14 miles NW (behind the passing storm) on S Winds at 7 mph – had been southerly 9-16 mph all afternoon, Temp 75°F, Dew Point 63°F rising, Visibility 10 miles, Partly Cloudy, 10 Cooling Degree Days, Cloud Base 2736′, RH 66% rising, Heat Index N/A, BP 29.74 rising, bats viewable under the streetlights until light rain at 9:37