{ "generated_utc": "2026-08-01T11:28:08Z", "gfs_cycle_utc": "2026-08-01T06:00:00Z", "model": { "source": "NCEP GFS 0.50 degree", "vertical_coordinate": "constant density (isopycnic)", "horizon_hours": 497.5, "output_interval_min": 30, "integration_step_s": 900, "wind_field_interval_h": 3 }, "staleness": { "fresh_seed_max_h": 24.0, "served_until_h": 336.0, "track_max_age_h": 72.0, "region_spread_deg": 60.0, "note": "A trajectory is served for 336 h after the last real fix and then the flight disappears. That matches the archive's own bridging limit: 23% of flights go quiet for over a week and are then heard again, so a shorter window drops balloons that are still flying. Past dead_reckoned flights the balloon has not been heard from since seed_time, so its present position is a prediction too -- the silent period is reconstructed from GFS analyses of weather that has already happened, which is why wind_source distinguishes analysis from forecast. Use display_as, not seed_age_h, to decide how to draw a flight: 'track' means the members still agree and a line is meaningful, 'region' means draw the member envelope instead because the nominal member is no better than any other." }, "members": { "offsets_m": [ -2000, -1500, -1000, -500, 0, 500, 1000, 1500, 2000 ], "nominal_offset_m": 0, "note": "Each member is seeded at the last observed altitude plus its offset and then conserves the density it started with. The ladder is a sensitivity fan, not a probability distribution: adjacent members diverge by roughly 1,200 km over seven days. levels_spanned reports how many GFS levels the fan actually straddles, usually 2 or 3." }, "files": { "trajectories_csv_gz": "PBA_forecast_20260801_06Z.csv.gz", "trajectories_geojson_gz": "PBA_forecast_20260801_06Z.geojson.gz" }, "counts": { "flights": 46, "members": 9, "rows": 237186 }, "flights": [ { "callsign": "AE0SS-9", "flight_id": "AE0SS-9_2026-07-12", "payload_type": "APRS", "seed_time": "2026-07-19 01:40:35", "seed_lat": 33.85425, "seed_lon": -115.42858, "seed_alt_m": 14321.0, "seed_age_h": 321.66, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 37.76003, "lon": -115.84467, "alt_m": 14240.1 }, "member_spread_deg": { "lat": 54.8, "lon": 116.27 }, "member_spread_now_deg": { "lat": 38.94, "lon": 63.51 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "AG6NS-23", "flight_id": "AG6NS-23_2026-02-07", "payload_type": "WSPR", "seed_time": "2026-08-01 00:23:40", "seed_lat": -58.52084, "seed_lon": -143.99999, "seed_alt_m": 12120.0, "seed_age_h": 10.94, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": -44.54801, "lon": 118.81658, "alt_m": 12381.9 }, "member_spread_deg": { "lat": 17.3, "lon": 40.48 }, "member_spread_now_deg": { "lat": 4.39, "lon": 1.7 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "BSS52", "flight_id": "BSS52_2025-12-25", "payload_type": "WSPR", "seed_time": "2026-07-24 17:39:48", "seed_lat": 59.97917, "seed_lon": 4.08333, "seed_alt_m": 13000.0, "seed_age_h": 185.67, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 42.53226, "lon": -88.88422, "alt_m": 13440.4 }, "member_spread_deg": { "lat": 35.06, "lon": 174.9 }, "member_spread_now_deg": { "lat": 28.71, "lon": 355.58 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "BSS53", "flight_id": "BSS53_2026-03-09", "payload_type": "WSPR", "seed_time": "2026-08-01 10:03:17", "seed_lat": 64.625, "seed_lon": 69.29167, "seed_alt_m": 12800.0, "seed_age_h": 1.28, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 09:30:00", "lat": 60.81542, "lon": -88.77572, "alt_m": 12274.0 }, "member_spread_deg": { "lat": 19.2, "lon": 312.83 }, "member_spread_now_deg": { "lat": 0.46, "lon": 1.98 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "BSS54", "flight_id": "BSS54_2026-07-09", "payload_type": "WSPR", "seed_time": "2026-08-01 11:01:18", "seed_lat": 30.0625, "seed_lon": -36.41667, "seed_alt_m": 14640.0, "seed_age_h": 0.31, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 11:00:00", "lat": 48.90288, "lon": 84.06968, "alt_m": 13976.2 }, "member_spread_deg": { "lat": 32.15, "lon": 147.4 }, "member_spread_now_deg": { "lat": 0.18, "lon": 0.12 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "DG2GG-23", "flight_id": "DG2GG-23_2026-05-23", "payload_type": "WSPR", "seed_time": "2026-08-01 03:49:00", "seed_lat": 28.29167, "seed_lon": -171.25, "seed_alt_m": 13130.0, "seed_age_h": 7.52, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 35.82641, "lon": -153.64917, "alt_m": 12992.7 }, "member_spread_deg": { "lat": 15.86, "lon": 109.82 }, "member_spread_now_deg": { "lat": 1.2, "lon": 1.23 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "DG2GG-25", "flight_id": "DG2GG-25_2026-06-15", "payload_type": "WSPR", "seed_time": "2026-07-25 07:22:00", "seed_lat": 68.97917, "seed_lon": 68.16667, "seed_alt_m": 12990.0, "seed_age_h": 171.97, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 59.02761, "lon": -13.92865, "alt_m": 12816.0 }, "member_spread_deg": { "lat": 41.65, "lon": 166.41 }, "member_spread_now_deg": { "lat": 22.63, "lon": 100.31 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "DG2GG-27", "flight_id": "DG2GG-27_2026-07-04", "payload_type": "WSPR", "seed_time": "2026-08-01 04:48:00", "seed_lat": 32.35417, "seed_lon": 174.20833, "seed_alt_m": 13950.0, "seed_age_h": 6.53, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 1, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 38.13553, "lon": -42.15922, "alt_m": 13507.9 }, "member_spread_deg": { "lat": 45.38, "lon": 343.74 }, "member_spread_now_deg": { "lat": 3.07, "lon": 1.16 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "DG2GG-29", "flight_id": "DG2GG-29_2026-07-28", "payload_type": "WSPR", "seed_time": "2026-08-01 09:02:00", "seed_lat": 43.9375, "seed_lon": 102.125, "seed_alt_m": 13020.0, "seed_age_h": 2.3, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 08:30:00", "lat": 58.18942, "lon": -129.92167, "alt_m": 13089.2 }, "member_spread_deg": { "lat": 31.53, "lon": 301.02 }, "member_spread_now_deg": { "lat": 0.43, "lon": 1.23 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "DJ2DS-34", "flight_id": "DJ2DS-34_2026-04-22", "payload_type": "WSPR", "seed_time": "2026-07-28 14:41:00", "seed_lat": 30.70833, "seed_lon": -70.5, "seed_alt_m": 9190.0, "seed_age_h": 92.65, "float_reliable": false, "dead_reckoned": true, "levels_spanned": 4, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 26.70195, "lon": 6.5536, "alt_m": 9275.7 }, "member_spread_deg": { "lat": 43.47, "lon": 272.66 }, "member_spread_now_deg": { "lat": 21.91, "lon": 49.95 }, "display_as": "region", "display_reason": "seed_age" }, { "callsign": "DL0MMZ", "flight_id": "DL0MMZ_2026-07-24", "payload_type": "OTHER", "seed_time": "2026-07-25 15:59:04", "seed_lat": 36.60802, "seed_lon": 30.46457, "seed_alt_m": 8441.0, "seed_age_h": 163.35, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 4, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 52.41383, "lon": -49.89172, "alt_m": 8616.8 }, "member_spread_deg": { "lat": 37.52, "lon": 320.41 }, "member_spread_now_deg": { "lat": 30.22, "lon": 68.26 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "DL0MZ-493", "flight_id": "DL0MZ-493_2026-07-25", "payload_type": "WSPR", "seed_time": "2026-07-29 07:36:01", "seed_lat": 64.20833, "seed_lon": 58.16667, "seed_alt_m": 12170.0, "seed_age_h": 75.73, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 59.14775, "lon": -28.8245, "alt_m": 12374.1 }, "member_spread_deg": { "lat": 30.17, "lon": 132.32 }, "member_spread_now_deg": { "lat": 20.52, "lon": 28.26 }, "display_as": "region", "display_reason": "seed_age" }, { "callsign": "DL0MZ-493e", "flight_id": "DL0MZ-493e_2026-07-25", "payload_type": "WSPR", "seed_time": "2026-07-29 07:27:02", "seed_lat": 64.15625, "seed_lon": 58.08889, "seed_alt_m": 12170.0, "seed_age_h": 75.88, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 59.20155, "lon": -36.36432, "alt_m": 12428.3 }, "member_spread_deg": { "lat": 31.01, "lon": 125.6 }, "member_spread_now_deg": { "lat": 21.02, "lon": 27.88 }, "display_as": "region", "display_reason": "seed_age" }, { "callsign": "DN3LEO-13", "flight_id": "DN3LEO-13_2026-04-12", "payload_type": "WSPR", "seed_time": "2026-08-01 08:53:00", "seed_lat": 67.89583, "seed_lon": 53.04167, "seed_alt_m": 12400.0, "seed_age_h": 2.45, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 08:30:00", "lat": 71.4021, "lon": -0.12405, "alt_m": 12286.1 }, "member_spread_deg": { "lat": 45.56, "lon": 301.76 }, "member_spread_now_deg": { "lat": 1.09, "lon": 0.75 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "DO3GU-40", "flight_id": "DO3GU-40_2026-06-19", "payload_type": "WSPR", "seed_time": "2026-07-24 12:15:47", "seed_lat": 71.20833, "seed_lon": 93.16667, "seed_alt_m": 15164.0, "seed_age_h": 191.07, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 76.50662, "lon": -55.32827, "alt_m": 15028.7 }, "member_spread_deg": { "lat": 39.78, "lon": 329.47 }, "member_spread_now_deg": { "lat": 24.2, "lon": 347.95 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "EI6BFW-18", "flight_id": "EI6BFW-18_2026-07-25", "payload_type": "WSPR", "seed_time": "2026-08-01 07:55:30", "seed_lat": 57.14583, "seed_lon": 146.375, "seed_alt_m": 12910.0, "seed_age_h": 3.41, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 07:30:00", "lat": 57.423, "lon": -52.5887, "alt_m": 12998.7 }, "member_spread_deg": { "lat": 31.35, "lon": 135.29 }, "member_spread_now_deg": { "lat": 0.68, "lon": 1.99 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "K0PEA-28", "flight_id": "K0PEA-28_2026-01-07", "payload_type": "WSPR", "seed_time": "2026-07-23 12:15:25", "seed_lat": 49.85411, "seed_lon": 24.91668, "seed_alt_m": 13360.0, "seed_age_h": 215.08, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 31.71603, "lon": 148.90229, "alt_m": 14112.6 }, "member_spread_deg": { "lat": 83.73, "lon": 321.29 }, "member_spread_now_deg": { "lat": 42.9, "lon": 287.58 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "K5NOT-11", "flight_id": "K5NOT-11_2026-06-20", "payload_type": "WSPR", "seed_time": "2026-08-01 10:55:37", "seed_lat": 38.81244, "seed_lon": 0.5, "seed_alt_m": 13240.0, "seed_age_h": 0.41, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 11:00:00", "lat": 44.45507, "lon": 136.52126, "alt_m": 13210.7 }, "member_spread_deg": { "lat": 30.8, "lon": 53.12 }, "member_spread_now_deg": { "lat": 0.18, "lon": 0.22 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "K9YO-23", "flight_id": "K9YO-23_2026-07-13", "payload_type": "WSPR", "seed_time": "2026-07-27 06:25:49", "seed_lat": 52.5833, "seed_lon": 125.16663, "seed_alt_m": 12840.0, "seed_age_h": 124.9, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 36.33858, "lon": -167.03858, "alt_m": 13103.2 }, "member_spread_deg": { "lat": 84.9, "lon": 330.16 }, "member_spread_now_deg": { "lat": 31.97, "lon": 74.96 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "KC3LBR-422-10", "flight_id": "KC3LBR-422-10_2026-01-02", "payload_type": "WSPR", "seed_time": "2026-07-19 21:57:02", "seed_lat": -26.39583, "seed_lon": -68.16667, "seed_alt_m": 14380.0, "seed_age_h": 301.38, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": -37.27674, "lon": -115.77783, "alt_m": 14375.7 }, "member_spread_deg": { "lat": 50.12, "lon": 197.37 }, "member_spread_now_deg": { "lat": 28.72, "lon": 303.94 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "KC3LBR-449", "flight_id": "KC3LBR-449_2026-07-06", "payload_type": "WSPR", "seed_time": "2026-08-01 07:13:34", "seed_lat": 68.875, "seed_lon": -136.75, "seed_alt_m": 13200.0, "seed_age_h": 4.11, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 06:45:00", "lat": 62.16211, "lon": -39.57839, "alt_m": 13274.7 }, "member_spread_deg": { "lat": 21.93, "lon": 101.69 }, "member_spread_now_deg": { "lat": 1.37, "lon": 1.64 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KC3LBR-485", "flight_id": "KC3LBR-485_2026-03-19", "payload_type": "WSPR", "seed_time": "2026-07-28 09:08:18", "seed_lat": 50.14583, "seed_lon": 23.375, "seed_alt_m": 12850.0, "seed_age_h": 98.2, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 72.34974, "lon": -176.69144, "alt_m": 13041.9 }, "member_spread_deg": { "lat": 15.86, "lon": 350.36 }, "member_spread_now_deg": { "lat": 22.8, "lon": 69.76 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "KC5TRB-1", "flight_id": "KC5TRB-1_2026-06-20", "payload_type": "WSPR", "seed_time": "2026-07-31 09:45:43", "seed_lat": 65.74995, "seed_lon": 26.6667, "seed_alt_m": 12780.0, "seed_age_h": 25.57, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 68.44719, "lon": 128.98884, "alt_m": 12794.0 }, "member_spread_deg": { "lat": 19.11, "lon": 358.32 }, "member_spread_now_deg": { "lat": 16.11, "lon": 7.43 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KE8RES-8", "flight_id": "KE8RES-8_2026-06-20", "payload_type": "WSPR", "seed_time": "2026-08-01 01:11:00", "seed_lat": 51.5, "seed_lon": -137.58333, "seed_alt_m": 12060.0, "seed_age_h": 10.15, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 66.92438, "lon": -91.46994, "alt_m": 12285.0 }, "member_spread_deg": { "lat": 4.96, "lon": 44.01 }, "member_spread_now_deg": { "lat": 3.48, "lon": 0.57 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KE9DAB-11", "flight_id": "KE9DAB-11_2026-07-29", "payload_type": "WSPR", "seed_time": "2026-08-01 10:51:00", "seed_lat": 35.29167, "seed_lon": -31.29167, "seed_alt_m": 12560.0, "seed_age_h": 0.48, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 10:15:00", "lat": 36.66786, "lon": 10.62318, "alt_m": 12338.7 }, "member_spread_deg": { "lat": 19.49, "lon": 55.31 }, "member_spread_now_deg": { "lat": 0.06, "lon": 0.04 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KI1TEN-1", "flight_id": "KI1TEN-1_2026-07-23", "payload_type": "WSPR", "seed_time": "2026-07-31 22:05:27", "seed_lat": 29.45828, "seed_lon": -93.95829, "seed_alt_m": 12400.0, "seed_age_h": 13.24, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 23.03746, "lon": -125.22255, "alt_m": 12273.8 }, "member_spread_deg": { "lat": 28.93, "lon": 30.18 }, "member_spread_now_deg": { "lat": 1.98, "lon": 2.91 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KI6DS-11", "flight_id": "KI6DS-11_2026-02-03", "payload_type": "WSPR", "seed_time": "2026-08-01 10:55:45", "seed_lat": 73.54161, "seed_lon": 39.50002, "seed_alt_m": 13240.0, "seed_age_h": 0.41, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 11:00:00", "lat": 68.46702, "lon": 65.03085, "alt_m": 12899.7 }, "member_spread_deg": { "lat": 21.7, "lon": 206.31 }, "member_spread_now_deg": { "lat": 0.12, "lon": 0.6 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KL7BB-1", "flight_id": "KL7BB-1_2026-06-24", "payload_type": "APRS", "seed_time": "2026-07-18 17:48:12", "seed_lat": 60.94767, "seed_lon": 14.502, "seed_alt_m": 12261.0, "seed_age_h": 329.53, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 57.993, "lon": -13.46384, "alt_m": 12235.6 }, "member_spread_deg": { "lat": 31.31, "lon": 305.8 }, "member_spread_now_deg": { "lat": 27.79, "lon": 276.78 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "KO6FE-15", "flight_id": "KO6FE-15_2025-11-09", "payload_type": "WSPR", "seed_time": "2026-07-19 07:56:00", "seed_lat": 49.39583, "seed_lon": 101.95833, "seed_alt_m": 12920.0, "seed_age_h": 315.4, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 65.16729, "lon": 175.69613, "alt_m": 13042.1 }, "member_spread_deg": { "lat": 71.15, "lon": 352.87 }, "member_spread_now_deg": { "lat": 55.73, "lon": 321.64 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "N0MPM-31", "flight_id": "N0MPM-31_2026-04-16", "payload_type": "WSPR", "seed_time": "2026-07-21 23:53:19", "seed_lat": -24.02088, "seed_lon": -135.08331, "seed_alt_m": 14600.0, "seed_age_h": 251.45, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": -12.96415, "lon": -40.43182, "alt_m": 14686.6 }, "member_spread_deg": { "lat": 53.26, "lon": 210.56 }, "member_spread_now_deg": { "lat": 35.28, "lon": 188.49 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "PC4L-11", "flight_id": "PC4L-11_2026-07-16", "payload_type": "APRS", "seed_time": "2026-07-26 12:46:26", "seed_lat": 42.93908, "seed_lon": 39.39383, "seed_alt_m": 11696.0, "seed_age_h": 142.56, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 33.36174, "lon": 162.53577, "alt_m": 12112.5 }, "member_spread_deg": { "lat": 75.7, "lon": 208.15 }, "member_spread_now_deg": { "lat": 46.55, "lon": 36.23 }, "display_as": "region", "display_reason": "seed_age" }, { "callsign": "SP0LND-6", "flight_id": "SP0LND-6_2026-07-25", "payload_type": "APRS", "seed_time": "2026-07-26 13:19:17", "seed_lat": 44.85792, "seed_lon": 29.04891, "seed_alt_m": 13803.0, "seed_age_h": 142.01, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 51.63479, "lon": -77.95836, "alt_m": 13776.6 }, "member_spread_deg": { "lat": 33.23, "lon": 219.41 }, "member_spread_now_deg": { "lat": 16.19, "lon": 53.43 }, "display_as": "region", "display_reason": "seed_age" }, { "callsign": "SP2ROC-1", "flight_id": "SP2ROC-1_2026-03-14", "payload_type": "APRS", "seed_time": "2026-07-22 14:00:27", "seed_lat": 40.10083, "seed_lon": 44.614, "seed_alt_m": 14644.0, "seed_age_h": 237.33, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 32.78311, "lon": 67.00692, "alt_m": 14752.9 }, "member_spread_deg": { "lat": 40.76, "lon": 191.63 }, "member_spread_now_deg": { "lat": 42.09, "lon": 78.05 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "SP2ROC-41", "flight_id": "SP2ROC-41_2026-01-25", "payload_type": "WSPR", "seed_time": "2026-08-01 10:51:00", "seed_lat": 69.0625, "seed_lon": 46.5, "seed_alt_m": 15400.0, "seed_age_h": 0.48, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 10:15:00", "lat": 51.52864, "lon": -178.01665, "alt_m": 15588.9 }, "member_spread_deg": { "lat": 32.61, "lon": 357.97 }, "member_spread_now_deg": { "lat": 0.01, "lon": 0.19 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "SP6MPL-32", "flight_id": "SP6MPL-32_2026-01-23", "payload_type": "WSPR", "seed_time": "2026-07-21 03:17:00", "seed_lat": -22.31248, "seed_lon": 162.875, "seed_alt_m": 14160.0, "seed_age_h": 272.05, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": -27.48072, "lon": 51.78201, "alt_m": 13885.5 }, "member_spread_deg": { "lat": 30.04, "lon": 186.66 }, "member_spread_now_deg": { "lat": 20.02, "lon": 327.95 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "SP6MPL-34", "flight_id": "SP6MPL-34_2025-12-03", "payload_type": "WSPR", "seed_time": "2026-07-31 18:52:00", "seed_lat": 74.5625, "seed_lon": -160.0, "seed_alt_m": 12890.0, "seed_age_h": 16.47, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 62.90215, "lon": 173.10062, "alt_m": 13243.8 }, "member_spread_deg": { "lat": 19.16, "lon": 153.59 }, "member_spread_now_deg": { "lat": 8.69, "lon": 16.07 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "VE3OCL-48", "flight_id": "VE3OCL-48_2026-05-12", "payload_type": "WSPR", "seed_time": "2026-07-18 11:55:00", "seed_lat": 45.41667, "seed_lon": -81.20833, "seed_alt_m": 16030.0, "seed_age_h": 335.42, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 1, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 56.84447, "lon": 136.49727, "alt_m": 15582.0 }, "member_spread_deg": { "lat": 53.25, "lon": 299.21 }, "member_spread_now_deg": { "lat": 41.01, "lon": 127.96 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "VE3VRO-36", "flight_id": "VE3VRO-36_2026-07-30", "payload_type": "WSPR", "seed_time": "2026-07-31 19:01:00", "seed_lat": 31.25, "seed_lon": -52.20833, "seed_alt_m": 13630.0, "seed_age_h": 16.32, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 37.94163, "lon": -69.94837, "alt_m": 13574.3 }, "member_spread_deg": { "lat": 11.81, "lon": 24.15 }, "member_spread_now_deg": { "lat": 3.39, "lon": 1.62 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "W0DLK-1", "flight_id": "W0DLK-1_2026-06-20", "payload_type": "WSPR", "seed_time": "2026-07-21 06:43:47", "seed_lat": 46.18745, "seed_lon": 121.75004, "seed_alt_m": 12630.0, "seed_age_h": 268.6, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 49.08652, "lon": 4.58391, "alt_m": 12788.1 }, "member_spread_deg": { "lat": 63.58, "lon": 243.53 }, "member_spread_now_deg": { "lat": 51.76, "lon": 175.91 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "W0RBO-12", "flight_id": "W0RBO-12_2026-05-02", "payload_type": "WSPR", "seed_time": "2026-07-31 23:00:23", "seed_lat": 43.22911, "seed_lon": -98.62497, "seed_alt_m": 13600.0, "seed_age_h": 12.33, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": 50.98693, "lon": 67.40215, "alt_m": 13348.8 }, "member_spread_deg": { "lat": 31.34, "lon": 141.01 }, "member_spread_now_deg": { "lat": 2.39, "lon": 2.1 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "W0ZC-15", "flight_id": "W0ZC-15_2026-07-10", "payload_type": "APRS", "seed_time": "2026-07-19 15:52:12", "seed_lat": 67.67675, "seed_lon": 24.87034, "seed_alt_m": 12127.0, "seed_age_h": 307.46, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 56.44331, "lon": -70.35169, "alt_m": 12685.3 }, "member_spread_deg": { "lat": 32.56, "lon": 213.03 }, "member_spread_now_deg": { "lat": 20.54, "lon": 166.21 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "WX8TOM-12", "flight_id": "WX8TOM-12_2026-07-18", "payload_type": "APRS", "seed_time": "2026-07-19 14:16:04", "seed_lat": 52.31942, "seed_lon": 14.9975, "seed_alt_m": 12988.0, "seed_age_h": 309.07, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 58.51615, "lon": 22.92152, "alt_m": 13048.8 }, "member_spread_deg": { "lat": 53.81, "lon": 294.56 }, "member_spread_now_deg": { "lat": 20.41, "lon": 297.62 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "YU9OMT-1", "flight_id": "YU9OMT-1_2026-05-24", "payload_type": "WSPR", "seed_time": "2026-07-26 12:50:00", "seed_lat": 39.60417, "seed_lon": 35.08336, "seed_alt_m": 11370.0, "seed_age_h": 142.5, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": 83.04908, "lon": 44.84624, "alt_m": 10855.8 }, "member_spread_deg": { "lat": 49.09, "lon": 306.45 }, "member_spread_now_deg": { "lat": 43.02, "lon": 55.56 }, "display_as": "region", "display_reason": "seed_age" }, { "callsign": "ZS6SRC-37", "flight_id": "ZS6SRC-37_2026-07-15", "payload_type": "WSPR", "seed_time": "2026-07-31 04:34:00", "seed_lat": -23.70833, "seed_lon": 149.29167, "seed_alt_m": 12380.0, "seed_age_h": 30.77, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": -13.68825, "lon": -6.84736, "alt_m": 12637.6 }, "member_spread_deg": { "lat": 21.98, "lon": 115.53 }, "member_spread_now_deg": { "lat": 7.14, "lon": 26.84 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "ZS6SRC-84", "flight_id": "ZS6SRC-84_2026-07-12", "payload_type": "WSPR", "seed_time": "2026-07-27 15:20:00", "seed_lat": -7.75, "seed_lon": 8.375, "seed_alt_m": 13090.0, "seed_age_h": 116.0, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:45:00", "lat": -10.63736, "lon": -44.22222, "alt_m": 13064.0 }, "member_spread_deg": { "lat": 33.45, "lon": 149.22 }, "member_spread_now_deg": { "lat": 23.56, "lon": 146.18 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "ZS6ZU-11", "flight_id": "ZS6ZU-11_2026-07-17", "payload_type": "WSPR", "seed_time": "2026-07-20 01:53:00", "seed_lat": -22.0625, "seed_lon": -151.29167, "seed_alt_m": 13360.0, "seed_age_h": 297.45, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-08 05:30:00", "lat": -32.9258, "lon": 158.60244, "alt_m": 12673.7 }, "member_spread_deg": { "lat": 27.11, "lon": 282.7 }, "member_spread_now_deg": { "lat": 15.61, "lon": 325.56 }, "display_as": "region", "display_reason": "member_spread" } ] }