Storms developingin a line from Mason to Lockhart & heading NE passing each side of Congress ~9:45pm, SchertzClemens 1:44, Frio 1:48, Bracken Camden 1:52, Stuart 2:06, Huber CongressScouts 2:10, GrapeCreek SanAngelo FosterRd 2:12, Rucker Fern 2:14, Congress(~83% of the colony flew 14 miles NW behind passing storm) 2:16, McNeil 2:18, OldTunnel 2:20, D’Hanis 2:20,

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: 6:37 am 

Flight:  9:00 pm
Scouts: 8:54 pm

~43 minutes after sundown (after dark) ~100% of the colony flew 8 miles SE (13% flew to altitude) into SE Winds at 5 mph – had been N 6-7 mph in early afternoon swinging around to the SE at flight time, Temp 79°F, Dew Point 60°F rising, Visibility10 miles, A Few Clouds, 10 Cooling Degree Days, Cloud Base 4332′, RH 52% rising, Heat Index 80°F, BP 29.80 rising, bats viewable until ~11:47 pm under streetlights

Bracketville radar offline until 2:08, Storm over SanAngelo, rising air creates front heading NW from SanAnto to Austin, Bracken 1:48, SchertzClemens Randolph Camden 1:56, Huber Loyola 1:58, McNeil SanAngelo 2:00, Chiroptorium DavisBlowout CongressScouts Frio 2:02, OldTunnel Congress(100% of the colony flew 8 miles SE) Stuart Bracketville FosterRd 2:08, GrapeCreek 2:10, SmythCrossing Fern 2:14, D’Hanis Rucker 2:16, EaglePass 2:24, Devil’sSinkhole 2:26,

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: 8:17 pm
Dark: 8:47 pm (10-20 minutes earlier if cloudy)
Sunrise: 6:37 am 

Flight:  9:02 pm
Scouts: 8:56 pm

~46 minutes after sundown (after dark) ~60% of the colony flew 6 miles SSE Winds Calm – had been NW at 14 mph around 3pm calming to the N & E prior to dark, Visibility 10 miles, A Few Clouds, Temp 71°F, Dew Point 70°F falling, 8 Cooling Degree Days, Cloud Base 228′, Heat Index N/A, RH 79% rising, BP 29.74 rising, bats viewable until 10:09 pm under streetlights

N front triggers rain early over Austin – lingering with storms S of Kerrville and along the coast, BalconesHeights Camden 1:16, BalconesCreek SALutheranHS 1:26, Bracken TX28 1:34, SCUCISD 1:38, SchertzClemens Frio 1:42, SMCenterpoint Seguin 1:46, Fern 1:50, Huber 1:52, McNeil 1:54, DavisBlowout FosterRd 1:58, Chiroptorium Stuart 2:00, OldTunnel 2:02, CongressScouts 2:04, GrapeCreek SanAngelo 2:06, Congress(~60% of the colony flew 6 miles SSE) SmythCrossing Rucker EaglePass 2:10, D’Hanis 2:18

8:55pm – 9:25 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: 8:16 pm
Dark: 8:46 pm (10-20 minutes earlier if cloudy)
Sunrise: 6:38 am 

Flight:  No Flight
Scouts:

Just a smattering of bats around 9:45pm – most stayed in the roost, Flight Time Conditions:  Winds N at 10 mph – had been NE 7-12 mph most of the afternoon, Overcast, Temp 70°F, Dew Point 68°F falling, Visibility 10 miles, 7 Cooling Degree Days, Cloud Base 456′, RH 93% falling, Heat Index N/A, BP 29.73 rising

Rain heading E over Austin & RoundRock at flight time, storm over SanAngelo, Bracken SchertzClemens Frio 1:40, Stuart Fern 2:00, GrapeCreek 2:14, Rucker 2:16, SanAngelo 2:20, Huber 2:24, FosterRd 2:28, McNeil(tiny) 2:46, Congress(<1k) at 2:56, other possible fllights supressed by instability or obscured by high humidity