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 in a period of intense maternity care, so flights will be diminished, unless a front moves through that stirs up insect activity.
Notes: ~24 minutes after sunset (right at dark) ~12% of the colony flew – some went 6 miles W while most went 8 miles NE on SE Winds at 10 mph – had been southeasterly 5-10 mph becoming S at 25 mph when T-storm rolled in in at 4:30 pm with gusts to 38 mph, Visibility 10 miles, Partly Cloudy, Temp 83°F, Dew Point 71°F falling, 19 Cooling Degree Days, Cloud Base 2736′, RH 67% steady, Heat Index 88°F, BP 29.95 rising, sea level 1013.2mb rising, bats viewable until 10:03 pm under streetlights
Saturday June 28, 2025
Southeast flow, Chiroptorium 0:32, Bracken 0:50, JamesRiver 0:58, DavisBlowout 1:04, Frio 1:36, McNeil 1:38, Decker 1:52, Wimberley SanMarcos SMCenterpoint 1:54, Crestwood&IH35 2:00, WellsBranch 2:04, Congress(~17% of the colony flew – some went 8 miles WNW while most went 4 miles NE ~12% of the total went to altitude) 2:08, Rucker 2:10, OldTunnel SMRB(Slayden) 2:14, D’Hanis US277&TX55 2:16, Huber SanAngeloFosterRd GrapeCreek 2:18, Ney 2:20, Stuart EaglePass 2:24,
Notes: ~24 minutes after sunset (just before dark) only ~17% of the colony flew – some went 8 miles WNW while most went 4 miles NE (~12% of the total went to altitude) on S Winds at 10 mph – had been southeasterly 5-12 mph all afternoon, Visibility 10 miles, Partly Cloudy, Temp 87°F, Dew Point 70°F steady, 19 Cooling Degree Days, Cloud Base 3876′, RH 57% rising, Heat Index 92°F, BP 29.97 rising, sea level 1013.6mb rising, bats viewable until 10:23 pm under streetlights
Friday June 27, 2025
Outflow boundary from Victoria storms passes N through Round Rock early,Chiroptorium 0:40, Bracken 0:54, JamesRiver 1:00, DavisBlowout 1:28, Frio 1:38, McNeil 1:44, Ruckerr 1:56, Congress(~22% of the colony flew – some went 4 miles NE while most headed 12 miles SSE ~29% of the total flew to altitude) 2:04, D’Hanis US277&TX55 2:10, OldTunnel Huber 2:12, BeaverCreek Temple GrapeCreek SanAngelo FosterRd OCFisher 2:18, Ney 2:20, EaglePass 2:24,
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 in a period of intense maternity care, so flights will be diminished, unless a north front moves through that stirs up insect activity.
Notes: ~20 minutes after sunset (ten minutes before dark), ~22% of the colony flew – some went 4 miles NE while most headed 12 miles SSE (~29% of the total flew to altitude) on SE Winds at 6 mph – has been SE 7-14 mph most of the afternoon, Visibility 10 miles, A Few Clouds, Temp 85°F, Dew Point 71°F rising, 18 Cooling Degree Days, Cloud Base 3192′, RH 63% rising, Heat Index 90°F, BP 30.00 rising, sea level 1014.6 mb rising, bats viewable until 10:13 pm under streetlights
Thursday June 26, 2025
Widespread rain E of the I-35 corridor from SanAntonio to Temple, Chiroptorium 0:04, JamesRiver DavisBlowout 0:44, Bracken 0:56, SanMarcos Frio Rucker 1:32, McNeil 1:42, SALutheran SanPedro Camden 1:58, WellsBranch Nlamar Congress(only ~4% of the colony flew 6 miles NE – 2% of those flew to altitude)) 2:04, Huber BeaverCreek Crestwood&IH35 Loyola 2:10, D’Hanis US277&TX55 2:12, OldTunnel 2:14, SanAngelo OCFisher FosterRd GrapeCreek 2:16, Ney EaglePass 2:20,
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 in a period of intense maternity care, so flights will be diminished, unless a north front moves through that stirs up insect activity.