No CenTex flights, Bitter Cold continues to grip the region, fallout has started from N Austin bridges, Congress Flight Time Conditions: Winds N at 16 mph – had been N 13-17 mph all afternoon with gusts to 23 mph around 4pm, Temp 25°F, WindChill 12°F, DewPoint 18°F, Overcast, 43 Heating Degree Days, RH 75% rising, BP 30.20 rising

Flight: No Flight
Scouts: 

Bitter Cold continues to grip Austin, Congress Flight Time Conditions: Winds N at 16 mph – had been N 13-17 mph all afternoon with gusts to 23 mph around 4pm, Temp 25°F, WindChill 12°F, DewPoint 18°F, Overcast, 43 Heating Degree Days, RH 75% rising, BP 30.20 rising, fallout has started from N Austin bridges

No CenTex flights, only things on radar were the ever-present wind farms: Anacacho near Bracketville, Mustang Flats and Langly both near SanAngelo, Congress Flight Time Conditions: Temp 23°F, Dew Point 16°F, Winds N at 17 mph – had been N 14-21 mph all afternoon, 37 Heating Degree Days, Cloud Base 1596′, RH 74% rising,Wind Chill 9°F, BP 30.15 steady, no fallout reported as of 9pm

6:00 pm – 6:30 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
But bats will be hunkered down to try and survive the freeze for the next several days
Fallout has started from N Austin bridges. We expect massive numbers of cold-stunned bats to fall in the next few days.

Sunset: 5:52 pm
Dark: 6:22 pm (10-20 minutes earlier if cloudy)
Sunrise: 7:28 am 

Flight: No Flight
Scouts: 

Bitter Cold grips Austin, Congress Flight Time Conditions: Winds N at 17 mph – had been N 14-21 mph all afternoon, Overcast, Temp 23°F, Dew Point 16°F steady, 37 Heating Degree Days, Cloud Base 1596′, RH 74% rising, Wind Chill 9°F, BP 30.15 steady

Light rain from SanAnto to Pearsall early moving east in advance of the arctic blast, SCUCISD 23:56, Bracken 0:04, SanMarcos 0:24, Timberwood SchertzClemens 410&IH35 Camden Luling Harwood EaglePass 0:30, CongressScouts SMCenterpoint BalconesCreek&IH10 0:32, Kingsbury Victoria 0:36, Chiroptorium BeeCavePark(~1,685) 0:38, Congress(~2,450) 0:42, D’Hanis Sabinal Knippa Dabny 0:44, Creedmore MustangRidge Cuero 0:46, OldTunnel Lockhart 0:50, Frio SmythCrossing 0:52, Punkin 1:26,

6:00 pm – 6:30 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
But bats will be hunkered down to try and survive the freeze for the next several days

Sunset: 5:51 pm
Dark: 6:21 pm (10-20 minutes earlier if cloudy)
Sunrise: 7:28 am 

Flight: 6:34 pm
Scouts: 6:24 pm

43 minutes after sunset ~2.5k flew, some a few miles NW some ESE on SE Winds at 3 mph – had been SW 12-16 mph most of the afternoon with gusts to 29 mph around 1pm diminishing by 4pm, Mostly Cloudy, Temp55°F Dew Point 38°F steady, 23 Heating Degree Days, Cloud Base 3876′, RH 53% rising, Wind Chill N/A, BP 29.99 rising, some bats viewable until 8:23 pm as they returned to the bridge

Bracken(~126k – 6% to altitude) 0:20, SCUCISD 410&IH35 0:28, FtSam Camden 0:32, SchertzClemens Seguin 0:38, Frio(~37k – 1% to altitude) Stuart(~4.8k – 21% to altitude) (partial migration from both) AlamoVillage 0:50, Congress Flight Time Conditions: Temp 45°, Dew Point 23°F, Winds NW at 3 mph – had been NW 10-21 mph most of the afternoon with gusts to 25 mph around 3pm – gusts to 45 mph earlier

6:00 pm – 6:30 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
But bats will be hunkered down to try and survive the freeze for the next several days

Sunset: 5:50 pm
Dark: 6:20 pm (10-20 minutes earlier if cloudy)
Sunrise: 7:28 am