-- Link to M-PERC page --

Geo IR 85-92GHz
Date/Time_(UTC) Source Sensor Vmax(kts) ARCHER Lat Lon Geo-ref Lat Lon 50% cert. rad. 95% cert. rad. Eye diam (deg) % cert. of eye
20240905 18:45:39 SSMIS-17 85-92GHz 20.0 33.13 176.64 33.09 176.72 0.48 1.35 1.30 1.1
20240905 18:11:51 * SSMIS-16 85-92GHz 20.0 33.16 177.04 33.14 177.08 0.28 0.78 0.70 10.7
20240905 15:58:23 * SSMIS-18 85-92GHz 20.4 33.25 176.98 33.21 177.07 0.35 0.98 0.20 3.4
20240905 13:42:38 * AMSR2 85-92GHz 20.9 33.04 177.17 33.06 177.13 0.38 1.08 0.50 7.2
20240905 13:42:38 AMSR2 37GHz 20.9 *** *** *** *** *** *** 2.00 ***
20240905 08:27:00 * Metop-A ASCAT 22.0 31.63 177.87 31.64 177.87 0.26 0.73 *** ***
20240905 06:20:21 SSMIS-17 85-92GHz 22.4 32.79 176.95 32.75 177.01 0.59 1.66 2.30 0.1
20240905 05:46:16 SSMIS-16 85-92GHz 22.5 *** *** *** *** *** *** 2.20 ***
20240905 03:32:54 * SSMIS-18 85-92GHz 23.0 32.75 178.34 32.69 178.42 0.29 0.82 0.50 3.8
20240905 01:38:56 AMSR2 85-92GHz 23.4 32.40 177.36 32.44 177.29 0.34 0.95 0.10 1.3
20240905 01:38:56 AMSR2 37GHz 23.4 *** *** *** *** *** *** 1.50 ***
20240904 21:12:00 Metop-A ASCAT 24.3 31.74 178.24 31.70 178.30 0.25 0.71 *** ***
20240904 21:09:00 * Metop-A ASCAT 24.3 31.84 178.37 31.80 178.42 0.23 0.64 *** ***
20240904 18:59:33 SSMIS-17 85-92GHz 24.8 32.56 177.66 32.47 177.78 0.62 1.75 2.60 0.1
20240904 18:25:35 SSMIS-16 85-92GHz 24.9 31.93 178.00 31.87 178.08 0.43 1.21 3.00 1.4
20240904 16:12:20 * SSMIS-18 85-92GHz 25.0 31.38 179.02 31.47 178.90 0.29 0.82 0.50 2.9
20240904 09:42:00 * Metop-C ASCAT 25.0 30.20 178.29 30.08 178.41 0.23 0.64 *** ***
20240904 08:48:00 Metop-A ASCAT 25.0 30.46 177.97 30.43 178.00 0.28 0.79 *** ***
20240904 05:59:08 SSMIS-16 85-92GHz 25.0 30.80 179.76 30.75 179.80 0.61 1.74 0.20 0.1
20240904 03:45:56 * SSMIS-18 85-92GHz 25.9 30.48 178.92 30.35 179.04 0.34 0.95 0.20 2.2
20240904 00:55:27 AMSR2 85-92GHz 27.1 29.92 179.09 29.77 179.22 0.44 1.24 1.70 1.0
20240904 00:55:27 AMSR2 37GHz 27.1 *** *** *** *** *** *** 0.80 ***
20240903 22:27:00 Metop-C ASCAT 28.1 *** *** *** *** *** *** *** ***
20240903 22:24:00 * Metop-C ASCAT 28.2 29.79 178.15 29.92 178.06 0.20 0.55 *** ***
20240903 18:39:26 SSMIS-16 85-92GHz 29.7 *** *** *** *** *** *** 1.70 ***
20240903 16:26:16 SSMIS-18 85-92GHz 30.7 29.33 179.07 29.45 179.09 0.60 1.70 1.80 0.1
20240903 13:55:39 AMSR2 85-92GHz 31.7 29.11 179.02 29.17 179.05 0.47 1.32 2.00 2.6
20240903 13:55:39 * AMSR2 37GHz 31.7 29.01 179.25 29.07 179.28 0.42 1.19 2.20 ***
20240903 06:11:39 * SSMIS-16 85-92GHz 34.9 28.67 179.33 28.59 179.28 0.41 1.16 2.60 1.7
20240903 03:58:56 * SSMIS-18 85-92GHz 35.0 28.61 179.58 28.41 179.46 0.36 1.02 0.70 5.8
20240903 01:49:58 AMSR2 85-92GHz 35.0 28.37 179.02 28.46 179.07 0.46 1.29 1.30 3.2
20240903 01:49:58 AMSR2 37GHz 35.0 *** *** *** *** *** *** 0.30 ***
20240902 21:51:00 * Metop-A ASCAT 35.0 27.15 179.75 27.01 179.68 0.21 0.59 *** ***
20240902 18:53:47 SSMIS-16 85-92GHz 35.0 27.01 178.40 26.92 178.39 0.49 1.40 0.30 0.9
20240902 16:40:44 * SSMIS-18 85-92GHz 35.0 27.07 178.28 27.12 178.28 0.46 1.31 1.10 1.0
20240902 09:27:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** ***
20240902 08:42:00 Metop-C ASCAT 35.0 *** *** *** *** *** *** *** ***
20240902 06:25:08 SSMIS-16 85-92GHz 35.0 *** *** *** *** *** *** 2.50 ***
20240902 04:12:05 SSMIS-18 85-92GHz 35.0 *** *** *** *** *** *** 0.20 ***
20240902 01:06:35 * AMSR2 85-92GHz 35.0 26.27 180.41 26.32 180.23 0.51 1.43 1.40 0.7
20240902 01:06:35 AMSR2 37GHz 35.0 *** *** *** *** *** *** 2.70 ***
20240901 18:02:11 * SSMIS-17 85-92GHz 35.0 26.30 -179.75 26.30 -179.74 0.30 0.86 0.30 4.6
20240901 12:33:56 GMI 85-92GHz 35.0 *** *** *** *** *** *** 3.00 ***
20240901 12:33:56 GMI 37GHz 35.0 *** *** *** *** *** *** 3.00 ***
20240901 08:09:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** ***
20240901 05:32:33 * SSMIS-17 85-92GHz 35.0 23.96 -176.45 24.01 -176.45 0.53 1.51 1.90 1.1
20240831 23:08:56 GMI 85-92GHz 35.0 *** *** *** *** *** *** 3.00 ***
20240831 23:08:56 GMI 37GHz 35.0 *** *** *** *** *** *** 3.00 ***
20240831 21:48:00 * Metop-C ASCAT 35.0 22.86 -176.39 22.69 -176.34 0.15 0.42 *** ***
20240831 20:54:00 * Metop-A ASCAT 35.0 22.82 -176.50 22.84 -176.50 0.13 0.37 *** ***
20240831 18:16:29 SSMIS-17 85-92GHz 35.0 22.36 -176.37 22.35 -176.36 0.45 1.28 1.60 2.1
20240831 17:40:43 SSMIS-16 85-92GHz 35.0 22.34 -176.29 22.35 -176.31 0.55 1.56 2.70 0.8
20240831 15:28:01 SSMIS-18 85-92GHz 35.0 22.45 -176.08 22.44 -176.04 0.53 1.50 1.90 1.9
20240831 13:26:53 AMSR2 85-92GHz 35.0 22.23 -175.99 22.21 -175.92 0.52 1.46 2.10 1.6
20240831 13:26:53 * AMSR2 37GHz 35.0 21.88 -176.04 21.86 -175.98 0.22 0.62 2.00 ***
20240831 09:21:00 Metop-C ASCAT 32.8 21.80 -175.84 21.80 -175.84 0.35 0.98 *** ***
20240831 08:27:00 * Metop-A ASCAT 32.0 21.79 -175.77 21.80 -175.78 0.18 0.51 *** ***
20240831 05:45:28 SSMIS-17 85-92GHz 30.0 21.93 -175.21 21.94 -175.21 0.41 1.16 0.60 13.8
20240831 05:09:25 SSMIS-16 85-92GHz 30.0 21.79 -175.49 21.82 -175.48 0.38 1.08 1.00 7.9
20240831 02:56:44 SSMIS-18 85-92GHz 30.0 21.81 -175.80 21.82 -175.80 0.32 0.89 1.10 13.3
20240831 01:17:21 AMSR2 85-92GHz 30.0 21.88 -175.89 21.83 -175.92 0.23 0.66 0.60 8.7
20240831 01:17:21 * AMSR2 37GHz 30.0 21.98 -175.89 21.93 -175.92 0.22 0.62 2.90 ***
20240830 18:30:46 * SSMIS-17 85-92GHz 30.0 21.86 -175.51 21.85 -175.45 0.32 0.91 1.90 4.4
20240830 17:54:22 SSMIS-16 85-92GHz 30.0 21.95 -175.23 21.95 -175.24 0.63 1.78 1.50 0.1
20240830 15:41:48 * SSMIS-18 85-92GHz 30.0 21.96 -175.03 21.95 -174.92 0.25 0.71 0.90 2.8
20240830 12:23:55 GMI 85-92GHz 30.0 21.67 -174.32 21.67 -174.27 0.33 0.92 0.50 43.6
20240830 12:23:55 * GMI 37GHz 30.0 21.47 -174.70 21.47 -174.65 0.25 0.72 1.30 ***
20240830 08:48:00 Metop-A ASCAT 30.0 *** *** *** *** *** *** *** ***
20240830 05:59:24 * SSMIS-17 85-92GHz 30.0 21.55 -173.54 21.55 -173.54 0.29 0.81 0.20 3.2
20240830 05:22:29 SSMIS-16 85-92GHz 30.0 21.53 -173.63 21.54 -173.71 0.34 0.96 2.70 3.4
20240830 03:09:45 SSMIS-18 85-92GHz 30.0 21.51 -173.37 21.50 -173.35 0.37 1.04 1.60 3.6
20240830 00:34:10 AMSR2 85-92GHz 30.0 21.47 -172.90 21.46 -172.83 0.25 0.70 0.80 6.4
20240830 00:34:10 * AMSR2 37GHz 30.0 21.27 -173.12 21.26 -173.04 0.25 0.70 0.40 ***
20240829 22:58:55 * GMI 85-92GHz 30.8 21.33 -172.76 21.35 -172.90 0.21 0.60 0.70 7.5
20240829 22:58:55 GMI 37GHz 30.8 *** *** *** *** *** *** 0.60 ***
20240829 21:39:00 Metop-A ASCAT 32.0 *** *** *** *** *** *** *** ***
20240829 18:07:53 SSMIS-16 85-92GHz 35.0 *** *** *** *** *** *** 1.30 ***
20240829 15:55:24 * SSMIS-18 85-92GHz 35.0 21.12 -171.29 21.05 -171.22 0.35 1.00 0.60 15.4
20240829 13:39:15 * AMSR2 85-92GHz 35.0 21.11 -171.66 21.21 -171.76 0.27 0.77 0.60 39.9
20240829 13:39:15 AMSR2 37GHz 35.0 *** *** *** *** *** *** 0.70 ***
20240829 09:09:00 Metop-A ASCAT 37.4 *** *** *** *** *** *** *** ***
20240829 08:21:00 * Metop-C ASCAT 38.0 20.80 -171.13 20.82 -171.24 0.13 0.38 *** ***
20240829 05:35:50 * SSMIS-16 85-92GHz 40.3 20.50 -170.74 20.50 -170.80 0.18 0.52 2.60 27.1
20240829 03:22:59 SSMIS-18 85-92GHz 42.2 20.50 -170.48 20.50 -170.41 0.22 0.61 1.30 25.8
20240828 23:43:55 GMI 85-92GHz 45.0 *** *** *** *** *** *** 3.00 ***
20240828 23:43:55 GMI 37GHz 45.0 *** *** *** *** *** *** 3.00 ***
20240828 20:18:00 * Metop-A ASCAT 45.0 20.49 -168.93 20.50 -169.05 0.20 0.57 *** ***
20240828 17:17:42 SSMIS-17 85-92GHz 45.0 20.29 -168.27 20.31 -168.35 0.52 1.47 1.00 3.9
20240828 12:56:17 * AMSR2 85-92GHz 45.0 20.48 -168.24 20.45 -168.15 0.22 0.63 2.00 8.9
20240828 12:56:17 AMSR2 37GHz 45.0 20.33 -168.24 20.30 -168.15 0.27 0.75 0.40 ***
20240828 07:48:00 * Metop-A ASCAT 45.0 20.16 -167.65 20.17 -167.85 0.15 0.44 *** ***
20240828 00:45:45 AMSR2 85-92GHz 45.0 19.88 -166.94 19.86 -166.84 0.59 1.66 0.20 0.8
20240828 00:45:45 * AMSR2 37GHz 45.0 20.08 -166.51 20.06 -166.41 0.17 0.48 0.70 ***
20240827 17:31:28 SSMIS-17 85-92GHz 45.0 20.03 -165.16 20.05 -165.22 0.43 1.22 0.50 14.4
20240827 16:53:53 * SSMIS-16 85-92GHz 45.0 20.01 -164.97 20.05 -165.11 0.30 0.85 0.50 49.0
20240827 14:41:42 SSMIS-18 85-92GHz 45.0 19.74 -165.03 19.75 -165.07 0.31 0.86 0.60 11.2
20240827 12:58:56 GMI 85-92GHz 45.0 20.03 -164.70 20.00 -164.55 0.29 0.82 0.10 61.3
20240827 12:58:56 GMI 37GHz 45.0 19.58 -164.75 19.55 -164.60 0.18 0.52 0.40 ***
20240827 12:13:22 AMSR2 85-92GHz 45.0 *** *** *** *** *** *** 0.90 ***
20240827 12:13:22 * AMSR2 37GHz 45.0 19.46 -164.67 19.45 -164.64 0.14 0.41 3.00 ***
20240827 04:59:00 * SSMIS-17 85-92GHz 50.0 19.71 -162.89 19.74 -163.12 0.33 0.94 1.10 10.1
20240827 04:21:04 SSMIS-16 85-92GHz 49.2 19.79 -162.55 19.72 -162.25 0.35 1.00 0.40 11.5
20240827 02:08:55 * SSMIS-18 85-92GHz 50.0 19.25 -162.25 19.30 -162.43 0.20 0.56 1.40 41.5
20240827 00:02:38 AMSR2 85-92GHz 50.0 19.35 -162.31 19.35 -162.30 0.51 1.45 1.40 2.4
20240827 00:02:38 AMSR2 37GHz 50.0 19.45 -162.26 19.45 -162.25 0.18 0.52 0.60 ***
20240826 23:33:56 GMI 85-92GHz 50.4 19.17 -161.84 19.20 -161.93 0.27 0.75 1.90 14.2
20240826 23:33:56 * GMI 37GHz 50.4 19.37 -162.00 19.40 -162.09 0.16 0.45 0.90 ***
20240826 17:07:09 * SSMIS-16 85-92GHz 55.0 19.41 -160.99 19.40 -161.10 0.18 0.51 1.20 19.4
20240826 14:55:05 * SSMIS-18 85-92GHz 55.0 19.20 -160.86 19.20 -160.86 0.34 0.97 0.80 3.6
20240826 07:42:00 Metop-C ASCAT 58.6 *** *** *** *** *** *** *** ***
20240826 04:34:06 * SSMIS-16 85-92GHz 61.2 18.99 -158.86 19.04 -159.16 0.34 0.97 0.80 15.1
20240826 02:22:09 * SSMIS-18 85-92GHz 63.0 18.87 -158.63 18.91 -158.76 0.23 0.66 1.00 15.9
20240826 02:07:42 SSMIS-18 85-92GHz 63.2 *** *** *** *** *** *** 0.10 ***
20240825 20:33:00 Metop-C ASCAT 67.9 17.98 -157.83 18.00 -157.91 0.22 0.62 *** ***
20240825 19:39:00 * Metop-A ASCAT 68.6 18.59 -157.20 18.66 -157.44 0.20 0.58 *** ***
20240825 16:18:33 * SSMIS-17 85-92GHz 71.4 18.49 -156.33 18.34 -156.09 0.16 0.46 0.50 66.1
20240825 12:48:55 * GMI 85-92GHz 75.0 18.08 -155.70 18.06 -155.57 0.12 0.35 0.70 100.0
20240825 12:48:55 GMI 37GHz 75.0 18.18 -155.76 18.16 -155.62 0.12 0.35 0.30 ***
20240825 08:03:00 * Metop-C ASCAT 68.4 17.85 -155.17 17.85 -155.31 0.24 0.67 *** ***
20240824 23:23:55 GMI 85-92GHz 55.0 17.85 -153.60 17.88 -153.71 0.24 0.68 0.60 66.1
20240824 23:23:55 * GMI 37GHz 55.0 17.80 -153.81 17.83 -153.92 0.11 0.32 0.70 ***
20240824 20:00:00 * Metop-A ASCAT 55.0 17.62 -153.12 17.68 -153.33 0.15 0.43 *** ***
20240824 19:12:00 Metop-C ASCAT 55.0 *** *** *** *** *** *** *** ***
20240824 16:32:20 SSMIS-17 85-92GHz 55.0 18.10 -152.64 18.16 -152.95 0.34 0.97 0.20 7.3
20240824 15:53:24 * SSMIS-16 85-92GHz 55.0 17.28 -152.29 17.25 -152.10 0.23 0.66 1.00 45.0
20240824 13:41:36 SSMIS-18 85-92GHz 55.0 17.66 -152.11 17.70 -152.40 0.23 0.66 0.60 55.0
20240824 11:43:19 AMSR2 85-92GHz 54.8 17.29 -151.50 17.30 -151.56 0.30 0.84 0.70 22.6
20240824 11:43:19 * AMSR2 37GHz 54.8 17.49 -151.34 17.50 -151.41 0.13 0.38 0.40 ***
20240824 07:30:00 * Metop-A ASCAT 51.2 17.11 -150.30 17.05 -149.96 0.21 0.61 *** ***
20240824 06:42:00 Metop-C ASCAT 50.0 *** *** *** *** *** *** *** ***
20240824 03:58:25 * SSMIS-17 85-92GHz 48.3 17.15 -149.53 17.08 -149.33 0.24 0.67 0.60 47.9
20240824 03:19:08 SSMIS-16 85-92GHz 47.8 *** *** *** *** *** *** 1.10 ***
20240824 01:07:18 SSMIS-18 85-92GHz 45.0 16.54 -148.76 16.47 -148.50 0.23 0.65 0.50 53.6
20240823 23:31:02 AMSR2 85-92GHz 44.6 16.78 -148.43 16.80 -148.55 0.28 0.80 0.70 24.5
20240823 23:31:02 * AMSR2 37GHz 44.6 16.93 -148.43 16.95 -148.55 0.16 0.46 0.50 ***
20240823 16:06:46 * SSMIS-16 85-92GHz 40.0 16.74 -146.78 16.66 -146.50 0.24 0.69 3.00 7.7
20240823 13:55:08 SSMIS-18 85-92GHz 40.0 16.54 -146.43 16.62 -146.70 0.26 0.74 1.00 10.7
20240823 12:38:56 * GMI 85-92GHz 40.0 16.49 -145.88 16.45 -145.72 0.22 0.62 1.00 24.3
20240823 12:38:56 GMI 37GHz 40.0 16.44 -145.83 16.40 -145.67 0.27 0.78 0.30 ***
20240823 11:00:32 * AMSR2 85-92GHz 40.0 16.46 -145.34 16.52 -145.58 0.22 0.62 0.90 29.4
20240823 11:00:32 AMSR2 37GHz 40.0 16.41 -145.34 16.47 -145.58 0.27 0.76 0.40 ***
20240823 06:12:00 Metop-A ASCAT 40.0 *** *** *** *** *** *** *** ***
20240823 03:31:52 * SSMIS-16 85-92GHz 37.9 16.04 -143.66 16.01 -143.54 0.19 0.55 0.30 28.8
20240823 01:20:27 SSMIS-18 85-92GHz 36.1 16.26 -143.19 16.25 -142.90 0.38 1.08 1.60 3.1
20240822 23:13:56 * GMI 85-92GHz 35.0 16.00 -142.65 16.00 -142.80 0.27 0.78 0.10 7.2
20240822 23:13:56 GMI 37GHz 35.0 15.60 -143.37 15.60 -143.53 0.33 0.92 1.70 ***
20240822 22:47:50 AMSR2 85-92GHz 35.0 15.80 -142.56 15.80 -142.81 0.31 0.88 0.10 8.2
20240822 22:47:50 AMSR2 37GHz 35.0 16.05 -143.03 16.05 -143.27 0.43 1.21 2.60 ***
20240822 19:00:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** ***
20240822 15:19:30 SSMIS-17 85-92GHz 32.8 *** *** *** *** *** *** 1.80 ***

Key:

Date/Time: UTC time. If this observation is used in the track it is marked with a "*". If it is used for its own 3-hr window, it is put in bold.

Source/sensor: Satellite source of the analyzed image.

Vmax: Maximum winds listed in the forecast center analysis/forecast, *not* ARCHER.

ARCHER lat/lon: Coordinates of the ARCHER algorithm, valid at the time of the observation. If no center fix could be found, then it is "***".

Geo ref lat/lon: Coordinates of the ARCHER algorithm, valid at the time of the *nearest geo image*.

50% cert. rad.: Radius of the circle (in degrees) that defines the area in which the ARCHER center of rotation is 50% certain. The lower the number, the more certain the position.

95% cert. rad.: Radius of the circle (in degrees) that defines the area in which the ARCHER center of rotation is 95% certain.

Eye diam (deg): ARCHER-resolved eye diameter (in degrees). Green: robust, yellow: less certain, red: not robust.

% cert. of eye: Percent certainty that an eye exists in this image, determined by ARCHER. Currently only available for IR and 85-92 GHz imagery.

Links to related versions: Summary table, ARCHER Track table, ARCHER Track Image Archive, Intensity Estimation, ARCHER-ERC page, F-Decks

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