8:40 pm – 9:10 pm

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 giving birth these days (average date of birth around June 10th) so flights will be diminished, unless a north front moves through that stirs up insect activity.

Sunset: 8:31 pm

Dark: 9:01 pm (10-20 min. earlier if cloudy)

Sunrise: 6:29 am

Flight: 8:56 pm 

Notes:~25 minutes after sunset (close to dark) ~77k flew – most went 4 miles NW while some went 4 miles E to altitude) on S Winds at 12 mph – had been S 10-16 mph all afternoon with gusts to 18 mph around 3:30pm, Visibility 10 miles, A Few Clouds, Temp 87°F, Dew Point 71°F rising, 22 Cooling Degree Days, Cloud Base 3648′, RH 59% rising, Heat Index 93°F, BP 29.86 rising, sea level 1009.8mb rising, bats viewable until 10:05 pm under streetlights

Flight: 8:56 pm
Scouts: 

Notes:26 minutes after sunset (right about dark), only ~5% of the colony flew – some went 4 miles NW while others went 4 miles NNE (only ~2% of the those flew to altitude) on S Winds at 13 mph – – had been S 8-13 mph most of the afternoon with gusts to 22 mph around 6:30pm, Visibility 10 miles, Fair, Temp 87°F, Dew Point 72°F steady, 22 Cooling Degree Days, Cloud Base 3420′, RH 61% rising, Heat Index 94°F, BP 29.88 rising, sea level 1010.5 mb rising, bats viewable until 10:07 pm under streetlights

8:40 pm – 9:10 pm

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!

Flights are trending closer to dark or at dark as is typical after mid-May
Today’s Predicted Average Temperature is 87.5°F
Normally, if the day’s Predicted Average Temperature is over 55°F but below 90°F with light winds, then there’s a chance for a strong flight.
However, the Congress bats are giving birth these days and flights will be diminished, unless a north front moves through that stirs up insect activity.

Sunset: 8:30 pm

Dark: 9:00 pm (10-20 min. earlier if cloudy)

Sunrise: 6:29 am

8:40 pm – 9:10 pm

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!

Flights are trending closer to dark or at dark as is typical after mid-May

Today’s Predicted Average Temperature is 84°F

If today’s Predicted Average Temperature is over 55°F but below 90°F with light winds, then there’s a chance for a strong flight

Sunset: 8:30 pm

Dark: 9:00 pm (10-20 min. earlier if cloudy)

Sunrise: 6:29 am

Flight: 9:04 pm
Scouts: 8:56 pm

Notes:34 minutes past sunset (after dark) only ~5% of the colony flew – some went 3 miles WNW while others went 4 miles NNE (5% of the total flew to altitude) on S Winds at 10 mph – had been southerly 8-13 mph all afternoon with gusts to 17 mph around 5:30pm, Visibility 10 miles, Partly Cloudy, Temp 86°F, Dew Point 74°F rising, 19 Cooling Degree Days, Cloud Base 2736′, RH 67% rising, Heat Index 94°F, BP 29.90 rising, sea level 1011.3mb rising, bats viewable until 10:23 pm under streetlights

Flight: 8:56 pm
Scouts: 

Notes:26 minutes after sunset (right about dark), only ~5% of the colony flew – some went 4 miles NW while others went 4 miles NNE (only ~2% of the those flew to altitude) on S Winds at 13 mph – – had been S 8-13 mph most of the afternoon with gusts to 22 mph around 6:30pm, Visibility 10 miles, Fair, Temp 87°F, Dew Point 72°F steady, 22 Cooling Degree Days, Cloud Base 3420′, RH 61% rising, Heat Index 94°F, BP 29.88 rising, sea level 1010.5 mb rising, bats viewable until 10:07 pm under streetlights