16 March 2021 (17 March 2021 UTC) – times are also UTC (subtract 5:10 hours for CDT)
Stuart 23:26, D’Hanis WofSabinal 23:48, Amistad 23:56, GrapeCreek 0:02, TerraVista 0:08, Bandera&Culebra 0:12, SmythCrossing 0:14, Nueces 0:20, BeeCliff Oracle Dittmar 0:26, Randolph Crownridge 0:28, Leander Oracle 0:30, Wimberley (~21,177 – ~771 to altitude) SanMarcos Frio90 Uvalde 0:34, McNeil (~46.164 – ~1,893 to altitude) Howard (~1,528) FairOaksRanch LakeOzDam 0:36, Bracken (~115,993 – ~26.3k to altitude) 0:46, WellsBranch (~4,914) UT Congress (~6% of summer peak) 0:50, Loyola FosterRd 0:58,
2021-03-17_UTC

15 March 2021 (16 March 2021 UTC) – times are also UTC (subtract 5:10 hours for CDT)
Migration continues as Hwy90W remains hot, D’Hanis 23:14, GrapeCreek 23:22, Nueces 23:26, NewBraunfels 23:34, SmythCrossing 23:38, Frio90 Sabinal 0:02, GovernmentCanyon 0:04, OPSchnabel 0:12, 1604&WGreenMtnRd 0:12, SMCenterpoint FairOaksRanch 0:16, BanderaRd&Culebra 0:18, EmmaLong BeeCliffs LakeOzDam 0:24, 410&IH35 0:28, Hubertus Randolph Stuart 0:30, Leander WellsBranch Oracle 0:32, FtHood Blanco Wimberley MustangRidge Luling 0:38, Bracken 0:44, Temple McNeil (~35.1k 3.6k of which went E to altitude hunting migratory insects) Howard (~7.0k – some recently arrived from Congress, which dipped in numbers) UT Congress (~6.5k of the flight went E to altitude – Peregrine hunting them – visible from Viewing Area) Decker Loyola 0:46, WellsBranch (2,212) SanMarcos 0:50, FosterRd 0:52, Salado 1:00, Lockhart Seguin SMRB 1:02,
2021-03-16_UTC

14 March 2021 (15 March 2021 UTC) – times are also UTC (subtract 5:10 hours for CDT)
Mexican free-tailed bats are moving back into Central Texas! D’Hanis migrating toward IH35 corridor 22:22, Band of insects migrating NW passes IH35 corridor, Nueces ContinentalTire 22:52, Decker NLamar 22:58, SmythCrossing (FM481&NuecesRiver) 23:00, Frio90 Sabinal 23:14, Amistad 23:20, FairOaksRanch 23:30, Stuart Rucker migration activity 23:38, SanPedro CampWood 23:48, Lakeway 23:56 feasts on migrating insects, McKinneyRoughs Bastrop 0:02, LakeOzDam 0:08, CrownridgeNP EaglePass 0:18, CedarPark BeeCliffs(Westlake) FosterRd 0:30, MountainCity SMCenterpoint 0:32, Oracle 0:36, Blanco 0:38, MustangRidge Hubertus Randolph Seguin GrapeCreek 0:40, Wimberley 0:42, McNeil (~44.2k – 11.3k of which went to altitude) 0:44, Congress (nice flight at sunset 12% of summer peak) ABIA Dittmar McKinneyFalls Bracken (~47,996 – 16k of which went SE to altitude – other low to the N) 0:46, Howard Lane (~3683) 0:50, WellsBranch (~1,643) 1:04,
2021-03-15_UTC

13 March 2021 (14 March 2021 UTC) – times are also UTC (subtract 6:10 hours for CST)
Stuart early (~17.36k) – continues migrating north to SanAngelo 23:52, BanderaRd 0:18, Crownridge 0:24, GrapeCreek 0:28, WellsBranch (~206) (nothing from Howard) Wimberley 0:38, Bracken (~23.3k headed toward OldTunnel) SanPedro Seguin 0:40, FosterRd 0:42, ToroCanyon EmmaLong Westlake SanMarcos SMCenterpoint 0:44, McNeil (~18.58k) 0:46, Congress weak 0:58 (~521),
2021-03-14_UTC

12 March 2021 (13 March 2021 UTC) – times are also UTC (subtract 6:10 hours for CST)
Stuart 22:50 way early – migrating toward SanAngelo, SmythCrossing 23:52, BanderaRd 0:02, Nueces 0:18, Crownridge 0:30, SanMarcos EaglePass GrapeCreek 0:34, SMCenterpoint 0:36, Leander CedarPark WellsBranch (~713) 0:38, Howard (~547) Hubertus Seguin 0:40, SanPedro Hwy1572 Brktvl FosterRd 0:44, McNeil (~22.2k – ~2.5k of which went to altitude) 0:44, Congress (~8.4k to 4miles N) Wimberley Buda Bracken 0:48, Randolph 0:56, Temple Salado Taylor Castroville (to GovCanyon) 1:00,
2021-03-13_UTC

11 March 2021 (12 March 2021 UTC) – times are also UTC (subtract 6:10 hours for CST)
Stuart ~45k (~6k to altitude) (bats are returning after retreating from the Winter Storm) 22:58, Nueces SmythCrossing 23:50, Garner 23:56, D’Hanis 0:10, BanderaRd&1604 0:12, SanMarcos 0:14, Leander 0:18, Taylor Lakeway EmmaLong Westlake SanPedro 0:22, SMCenterpoint Cibolo Randolph 0:26, Brktvl 0:28, Hubertus 0:30, EaglePass (staging for return migration) Pinto 0:32, Buda LeonCreek Seguin 0:34, CedarPark McNeil (~19,370 – ~570 went to altitude) WellsBranch (~2,349) Loyola Maverick 0:36, Wimberley 0:58, Howard (~84) 0:50, Bracken (~28.2k headed W – ~2.1k of those went to altitude) 0:56, Congress (~8.7k headed NW) 0:58,
2021-03-12_UTC

10 March 2021 (11 March 2021 UTC) – times are also UTC (subtract 6:10 hours for CST)
Rain from the W, BanderaRd&1604 0:12, FairOaksRanch 0:16, SanMarcos GovernmentCanyon 0:30, Crownridge 0:34, SMCenterpoint Hubertus 0:38, SanPedro BalconesHeights 0:50, McNeil (~7.3k – ~1.5k of which went N to altitude) 0:56, Wimberley 0:58, Randolph (~26.6k – ~11.5k of which fly to altitude – all head to Bracken) 1:00, NewBraunfels Bracken (~18,571 – ~3,728 of those to altitude) TX28 410&IH35 Lackland Seguin 1:02, Stuart (~16k head SW) 1:10, Congress (~23.7k late after storm) 2:08,
2021-03-11_UTC

09 March 2021 (10 March 2021 UTC) – times are also UTC (subtract 6:10 hours for CST)
Nueces Uvlade 0:04, Sabinal 0:08, SmythCrossing 0:12, EaglePass 0:20, Brktvl 0:28, SeaWorld 0:32, Hwy1572 0:34, Decker 0:36, SanMarcos SMCenterpoint 0:40, Leander Hubertus 0:44, McNeil (~5513 – ~1,412 of which flew N to altitude) WellsBranch (~205) StoneHill 0:50, MountLarson 0:52, Howard (~53) TX28 410&IH35 0:58, Bracken Schertz SanPedro LeonValley Lackland 1:02, Congress (~4,481) 1:04, Seguin 1:06, D’Hanis 1:08, McKinneyFalls 1:12, insect emergence and migration starting S of Pleasanton and Jourdanton starting 1:52, bats settle into Stuart 3:14,
2021-03-10_UTC

08 March 2021 (09 March 2021 UTC) – times are also UTC (subtract 6:10 hours for CST)
BalconesHeights 23:42, Camden 23:44, Lamar&BenWhite 23:50, SanMarcos SMCenterpoint Fresno&IH10 23:54, LeonValley 23:58, FairOaksRanch GovernmentCanyon 0:06, Uvalde ContinentalTire 0:10, SmythCrossing 0:16, Hubertus SeaWorld Seguin 0:18, Lakeway 0:20, LeonCreek Luling Waelder 0:24, Nueces 0:26, Oracle UT 410&IH35 SanPedro&Fresno FtSam Randolph 0:28, NLamar 0:34, Leander CedarPark WellsBranch Decker Brktvl Hwy1572 0:42, McNeil (~16,586 headed NNE – 3,543 of which went to altitude) Congress (~11,348 headed NNE) Lackland 0:56, Bracken (~19,879 headed toward OldTunnel) 1:00, insects continue to emerge from diapause and migrate N from just S of Jourdanton and Pleasanton 1:56 (correlation coefficient shows blue at 2:14),
2021-03-09_UTC

07 March 2021 (08 March 2021 UTC) – times are also UTC (subtract 6:10 hours for CST)
Camden 23:46, JamesCasey SMCenterpoint Seguin 0:06, CalaverasPowerPlant (~25,696) 0:08, 1604&WGreenMtnRd 0:18, NLamar SanPedro&Fresno 0:22, Lakeway 0:26, WellsBranch SanMarcos 410&IH35 FtSam Randolph 0:32, Bats at 1604&BulverdeRd head back toward Bracken 0:36, Leander Decker UT McKinneyFalls Dittmar (~8,175 – ~1,562 of those flew N to altitude) MustangRidge Buda Kyle 0:40, Cibolo 0:44, McNeil (~7,926 – ~2,478 of which flew E to altitude) 0:54, Congress (~11,182) 1:00, HowardLane (~406)1:08, insect emergence and migration starting 1:44 from Jourdanton (S of San Antonio) to NW of Round Rock
2021-03-08_UTC