{ "generated_utc": "2026-08-02T11:27:34Z", "gfs_cycle_utc": "2026-08-02T06:00:00Z", "model": { "source": "NCEP GFS 0.50 degree", "vertical_coordinate": "constant density (isopycnic)", "horizon_hours": 495.5, "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_20260802_06Z.csv.gz", "trajectories_geojson_gz": "PBA_forecast_20260802_06Z.geojson.gz" }, "counts": { "flights": 42, "members": 9, "rows": 215406 }, "flights": [ { "callsign": "AG6NS-23", "flight_id": "AG6NS-23_2026-02-07", "payload_type": "WSPR", "seed_time": "2026-08-01 23:48:40", "seed_lat": -52.97917, "seed_lon": -119.99999, "seed_alt_m": 12240.0, "seed_age_h": 11.52, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": -44.59374, "lon": 153.69705, "alt_m": 12840.7 }, "member_spread_deg": { "lat": 10.76, "lon": 12.13 }, "member_spread_now_deg": { "lat": 2.57, "lon": 3.22 }, "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": 209.67, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 42.22992, "lon": -55.83094, "alt_m": 13534.7 }, "member_spread_deg": { "lat": 34.64, "lon": 147.22 }, "member_spread_now_deg": { "lat": 17.48, "lon": 335.13 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "BSS53", "flight_id": "BSS53_2026-03-09", "payload_type": "WSPR", "seed_time": "2026-08-02 09:31:33", "seed_lat": 65.27083, "seed_lon": 105.04167, "seed_alt_m": 12550.0, "seed_age_h": 1.81, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 09:00:00", "lat": 70.73937, "lon": -45.79989, "alt_m": 12389.3 }, "member_spread_deg": { "lat": 16.67, "lon": 158.7 }, "member_spread_now_deg": { "lat": 0.6, "lon": 1.73 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "BSS54", "flight_id": "BSS54_2026-07-09", "payload_type": "WSPR", "seed_time": "2026-08-01 18:41:48", "seed_lat": 29.27083, "seed_lon": -39.54167, "seed_alt_m": 14715.0, "seed_age_h": 16.64, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 45.83188, "lon": 79.59682, "alt_m": 14362.9 }, "member_spread_deg": { "lat": 29.55, "lon": 150.0 }, "member_spread_now_deg": { "lat": 1.2, "lon": 1.15 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "DG2GG-23", "flight_id": "DG2GG-23_2026-05-23", "payload_type": "WSPR", "seed_time": "2026-08-02 03:24:00", "seed_lat": 28.875, "seed_lon": -164.0, "seed_alt_m": 13080.0, "seed_age_h": 7.93, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 49.04371, "lon": -128.40158, "alt_m": 12892.8 }, "member_spread_deg": { "lat": 8.23, "lon": 62.15 }, "member_spread_now_deg": { "lat": 0.3, "lon": 0.53 }, "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": 195.97, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 56.67928, "lon": 21.75091, "alt_m": 12877.2 }, "member_spread_deg": { "lat": 24.81, "lon": 240.35 }, "member_spread_now_deg": { "lat": 36.92, "lon": 128.17 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "DG2GG-27", "flight_id": "DG2GG-27_2026-07-04", "payload_type": "WSPR", "seed_time": "2026-08-02 03:23:00", "seed_lat": 19.25, "seed_lon": -168.58333, "seed_alt_m": 14110.0, "seed_age_h": 7.95, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 1, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 35.04504, "lon": -32.98447, "alt_m": 13833.5 }, "member_spread_deg": { "lat": 51.47, "lon": 100.49 }, "member_spread_now_deg": { "lat": 2.26, "lon": 3.51 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "DG2GG-29", "flight_id": "DG2GG-29_2026-07-28", "payload_type": "WSPR", "seed_time": "2026-08-02 07:47:00", "seed_lat": 57.04167, "seed_lon": 126.25, "seed_alt_m": 13080.0, "seed_age_h": 3.55, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 07:15:00", "lat": 39.3087, "lon": -105.35795, "alt_m": 13514.0 }, "member_spread_deg": { "lat": 48.28, "lon": 299.64 }, "member_spread_now_deg": { "lat": 0.61, "lon": 1.82 }, "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": 116.65, "float_reliable": false, "dead_reckoned": true, "levels_spanned": 4, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 31.70188, "lon": 7.86833, "alt_m": 9324.2 }, "member_spread_deg": { "lat": 43.57, "lon": 182.92 }, "member_spread_now_deg": { "lat": 38.74, "lon": 83.92 }, "display_as": "region", "display_reason": "member_spread" }, { "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": 187.35, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 4, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 37.61193, "lon": -17.89455, "alt_m": 8705.6 }, "member_spread_deg": { "lat": 41.17, "lon": 327.49 }, "member_spread_now_deg": { "lat": 28.87, "lon": 327.72 }, "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": 99.73, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 50.54432, "lon": -14.17779, "alt_m": 12634.7 }, "member_spread_deg": { "lat": 59.67, "lon": 133.01 }, "member_spread_now_deg": { "lat": 20.1, "lon": 38.93 }, "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": 99.88, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 53.31023, "lon": 3.33649, "alt_m": 11982.5 }, "member_spread_deg": { "lat": 33.25, "lon": 176.37 }, "member_spread_now_deg": { "lat": 19.48, "lon": 354.09 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "DN3LEO-13", "flight_id": "DN3LEO-13_2026-04-12", "payload_type": "WSPR", "seed_time": "2026-08-02 10:53:00", "seed_lat": 66.9375, "seed_lon": 68.70833, "seed_alt_m": 12520.0, "seed_age_h": 0.45, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 11:00:00", "lat": 65.99716, "lon": 20.12236, "alt_m": 12030.4 }, "member_spread_deg": { "lat": 31.27, "lon": 196.21 }, "member_spread_now_deg": { "lat": 0.04, "lon": 0.18 }, "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": 215.07, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 71.26496, "lon": -74.85251, "alt_m": 15034.1 }, "member_spread_deg": { "lat": 40.0, "lon": 254.19 }, "member_spread_now_deg": { "lat": 25.08, "lon": 244.73 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "EI6BFW-18", "flight_id": "EI6BFW-18_2026-07-25", "payload_type": "WSPR", "seed_time": "2026-08-02 06:53:00", "seed_lat": 51.125, "seed_lon": 151.16667, "seed_alt_m": 12920.0, "seed_age_h": 4.45, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 06:30:00", "lat": 31.90508, "lon": -100.09977, "alt_m": 13387.5 }, "member_spread_deg": { "lat": 49.75, "lon": 116.26 }, "member_spread_now_deg": { "lat": 0.6, "lon": 1.57 }, "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": 239.08, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 50.04044, "lon": -76.77516, "alt_m": 13687.8 }, "member_spread_deg": { "lat": 92.46, "lon": 267.78 }, "member_spread_now_deg": { "lat": 34.31, "lon": 290.27 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "K5NOT-11", "flight_id": "K5NOT-11_2026-06-20", "payload_type": "WSPR", "seed_time": "2026-08-02 10:48:07", "seed_lat": 43.87494, "seed_lon": 15.08334, "seed_alt_m": 13120.0, "seed_age_h": 0.53, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 10:15:00", "lat": 36.93909, "lon": -162.34412, "alt_m": 13305.9 }, "member_spread_deg": { "lat": 22.35, "lon": 344.03 }, "member_spread_now_deg": { "lat": 0.04, "lon": 0.13 }, "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": 148.9, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 13.41569, "lon": 94.53742, "alt_m": 13219.5 }, "member_spread_deg": { "lat": 53.43, "lon": 258.34 }, "member_spread_now_deg": { "lat": 36.89, "lon": 340.7 }, "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": 325.38, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": -26.59399, "lon": -104.41807, "alt_m": 14382.2 }, "member_spread_deg": { "lat": 36.2, "lon": 225.86 }, "member_spread_now_deg": { "lat": 28.55, "lon": 252.56 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "KC3LBR-449", "flight_id": "KC3LBR-449_2026-07-06", "payload_type": "WSPR", "seed_time": "2026-08-02 05:22:33", "seed_lat": 64.375, "seed_lon": -126.0, "seed_alt_m": 13220.0, "seed_age_h": 5.96, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 53.81573, "lon": -1.24304, "alt_m": 13293.8 }, "member_spread_deg": { "lat": 11.59, "lon": 115.88 }, "member_spread_now_deg": { "lat": 1.93, "lon": 0.19 }, "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": 122.2, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 67.76397, "lon": 178.28617, "alt_m": 13258.8 }, "member_spread_deg": { "lat": 42.28, "lon": 348.57 }, "member_spread_now_deg": { "lat": 19.25, "lon": 113.23 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "KC5TRB-1", "flight_id": "KC5TRB-1_2026-06-20", "payload_type": "WSPR", "seed_time": "2026-08-02 10:50:43", "seed_lat": 67.33328, "seed_lon": 64.87503, "seed_alt_m": 12840.0, "seed_age_h": 0.49, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 10:15:00", "lat": 65.76367, "lon": 22.51162, "alt_m": 12349.4 }, "member_spread_deg": { "lat": 41.97, "lon": 258.51 }, "member_spread_now_deg": { "lat": 0.04, "lon": 0.2 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KE8RES-8", "flight_id": "KE8RES-8_2026-06-20", "payload_type": "WSPR", "seed_time": "2026-08-02 00:16:00", "seed_lat": 51.6875, "seed_lon": -128.5, "seed_alt_m": 12100.0, "seed_age_h": 11.07, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 56.52521, "lon": -96.26572, "alt_m": 12189.4 }, "member_spread_deg": { "lat": 6.71, "lon": 99.62 }, "member_spread_now_deg": { "lat": 0.95, "lon": 3.24 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KE9DAB-11", "flight_id": "KE9DAB-11_2026-07-29", "payload_type": "WSPR", "seed_time": "2026-08-02 10:16:00", "seed_lat": 26.39583, "seed_lon": -41.29167, "seed_alt_m": 12590.0, "seed_age_h": 1.07, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 09:45:00", "lat": 48.04153, "lon": 48.50638, "alt_m": 12214.0 }, "member_spread_deg": { "lat": 26.51, "lon": 112.61 }, "member_spread_now_deg": { "lat": 0.13, "lon": 0.23 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KI1TEN-1", "flight_id": "KI1TEN-1_2026-07-23", "payload_type": "WSPR", "seed_time": "2026-08-01 22:55:27", "seed_lat": 23.95828, "seed_lon": -104.12496, "seed_alt_m": 12380.0, "seed_age_h": 12.41, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 35.34925, "lon": -118.4392, "alt_m": 12361.5 }, "member_spread_deg": { "lat": 35.19, "lon": 43.86 }, "member_spread_now_deg": { "lat": 3.34, "lon": 1.31 }, "display_as": "track", "display_reason": "fresh" }, { "callsign": "KI6DS-11", "flight_id": "KI6DS-11_2026-02-03", "payload_type": "WSPR", "seed_time": "2026-08-02 10:25:45", "seed_lat": 70.70828, "seed_lon": 79.04169, "seed_alt_m": 13120.0, "seed_age_h": 0.91, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 10:00:00", "lat": 70.24611, "lon": -43.83731, "alt_m": 13106.2 }, "member_spread_deg": { "lat": 28.44, "lon": 151.71 }, "member_spread_now_deg": { "lat": 0.31, "lon": 1.31 }, "display_as": "track", "display_reason": "fresh" }, { "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": 275.45, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": -24.90541, "lon": -10.53237, "alt_m": 14450.4 }, "member_spread_deg": { "lat": 29.31, "lon": 176.63 }, "member_spread_now_deg": { "lat": 39.84, "lon": 356.52 }, "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": 166.56, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 6.2326, "lon": 97.85239, "alt_m": 12198.5 }, "member_spread_deg": { "lat": 50.02, "lon": 321.77 }, "member_spread_now_deg": { "lat": 51.65, "lon": 59.47 }, "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": 166.01, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 72.89685, "lon": -51.86184, "alt_m": 13481.2 }, "member_spread_deg": { "lat": 26.42, "lon": 129.7 }, "member_spread_now_deg": { "lat": 21.79, "lon": 53.63 }, "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": 261.33, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 30.07337, "lon": 54.49312, "alt_m": 14741.3 }, "member_spread_deg": { "lat": 57.05, "lon": 133.05 }, "member_spread_now_deg": { "lat": 49.78, "lon": 110.74 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "SP2ROC-41", "flight_id": "SP2ROC-41_2026-01-25", "payload_type": "WSPR", "seed_time": "2026-08-02 10:51:00", "seed_lat": 68.4375, "seed_lon": 62.33333, "seed_alt_m": 15400.0, "seed_age_h": 0.48, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 10:15:00", "lat": 57.54998, "lon": 141.1285, "alt_m": 15401.1 }, "member_spread_deg": { "lat": 30.92, "lon": 332.08 }, "member_spread_now_deg": { "lat": 0.03, "lon": 0.28 }, "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": 296.05, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": -32.19999, "lon": 72.91663, "alt_m": 13775.1 }, "member_spread_deg": { "lat": 33.83, "lon": 248.8 }, "member_spread_now_deg": { "lat": 14.93, "lon": 276.8 }, "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": 40.47, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 65.18533, "lon": 140.93352, "alt_m": 12957.2 }, "member_spread_deg": { "lat": 40.45, "lon": 245.23 }, "member_spread_now_deg": { "lat": 9.54, "lon": 251.91 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "VE3VRO-36", "flight_id": "VE3VRO-36_2026-07-30", "payload_type": "WSPR", "seed_time": "2026-08-01 20:21:00", "seed_lat": 29.3125, "seed_lon": -56.125, "seed_alt_m": 13460.0, "seed_age_h": 14.98, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 24.44006, "lon": -45.62847, "alt_m": 13567.5 }, "member_spread_deg": { "lat": 37.78, "lon": 193.44 }, "member_spread_now_deg": { "lat": 4.3, "lon": 2.88 }, "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": 292.6, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 34.77745, "lon": -16.72197, "alt_m": 13042.7 }, "member_spread_deg": { "lat": 60.94, "lon": 303.34 }, "member_spread_now_deg": { "lat": 56.22, "lon": 197.0 }, "display_as": "region", "display_reason": "member_spread" }, { "callsign": "W0RBO-12", "flight_id": "W0RBO-12_2026-05-02", "payload_type": "WSPR", "seed_time": "2026-08-01 22:25:23", "seed_lat": 43.39578, "seed_lon": -88.08331, "seed_alt_m": 13540.0, "seed_age_h": 12.91, "float_reliable": true, "dead_reckoned": false, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": 44.77263, "lon": 71.84696, "alt_m": 13511.2 }, "member_spread_deg": { "lat": 48.13, "lon": 199.17 }, "member_spread_now_deg": { "lat": 2.78, "lon": 4.69 }, "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": 331.46, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 70.12015, "lon": -9.48412, "alt_m": 12357.5 }, "member_spread_deg": { "lat": 25.53, "lon": 225.73 }, "member_spread_now_deg": { "lat": 22.33, "lon": 167.88 }, "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": 333.07, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 48.32305, "lon": -24.29683, "alt_m": 13605.5 }, "member_spread_deg": { "lat": 43.61, "lon": 348.62 }, "member_spread_now_deg": { "lat": 27.46, "lon": 293.93 }, "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": 166.5, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": 68.70386, "lon": 9.48994, "alt_m": 11237.7 }, "member_spread_deg": { "lat": 53.52, "lon": 327.21 }, "member_spread_now_deg": { "lat": 37.34, "lon": 338.31 }, "display_as": "region", "display_reason": "member_spread" }, { "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": 54.77, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 3, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": -5.63682, "lon": -11.51897, "alt_m": 12686.5 }, "member_spread_deg": { "lat": 33.07, "lon": 160.05 }, "member_spread_now_deg": { "lat": 15.56, "lon": 50.58 }, "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": 140.0, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:45:00", "lat": -1.31845, "lon": -117.83604, "alt_m": 13139.5 }, "member_spread_deg": { "lat": 25.96, "lon": 276.42 }, "member_spread_now_deg": { "lat": 27.77, "lon": 327.24 }, "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": 321.45, "float_reliable": true, "dead_reckoned": true, "levels_spanned": 2, "nominal_end": { "valid_time": "2026-08-09 05:30:00", "lat": -31.79378, "lon": 170.92484, "alt_m": 12861.2 }, "member_spread_deg": { "lat": 34.03, "lon": 347.2 }, "member_spread_now_deg": { "lat": 10.62, "lon": 334.49 }, "display_as": "region", "display_reason": "member_spread" } ] }