-- 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
20260106 10:57:25 GMI 85-92GHz 25.4 *** *** *** *** *** *** 0.90 ***
20260106 10:57:25 * GMI 37GHz 25.4 -17.91 51.03 -17.96 50.93 0.22 0.62 1.40 ***
20260106 00:30:27 * SSMIS-18 85-92GHz 29.8 -16.78 53.02 -16.72 53.19 0.31 0.88 1.20 13.0
20260105 22:17:21 AMSR2 85-92GHz 30.0 -16.55 52.72 -16.62 52.51 0.28 0.80 3.00 0.0
20260105 22:17:21 AMSR2 37GHz 30.0 -16.85 52.98 -16.92 52.77 0.38 1.07 3.00 ***
20260105 21:37:26 * GMI 85-92GHz 30.0 -16.56 52.94 -16.50 53.14 0.19 0.53 0.10 45.9
20260105 21:37:26 GMI 37GHz 30.0 -16.76 53.15 -16.70 53.34 0.28 0.78 0.80 ***
20260105 15:56:24 * SSMIS-16 85-92GHz 30.0 -16.23 54.45 -16.16 54.70 0.38 1.09 3.00 0.0
20260105 04:48:00 * Metop-A ASCAT 30.0 -16.72 56.06 -16.75 55.92 0.18 0.50 *** ***
20260104 21:33:45 AMSR2 85-92GHz 30.0 -15.99 57.44 -15.97 57.64 0.49 1.40 1.40 1.7
20260104 21:33:45 * AMSR2 37GHz 30.0 -16.09 57.49 -16.07 57.69 0.29 0.81 1.80 ***
20260104 18:18:00 Metop-C ASCAT 30.0 -16.28 58.42 -16.26 58.57 0.28 0.79 *** ***
20260104 17:39:00 * Metop-A ASCAT 30.0 -15.81 58.70 -15.81 58.72 0.19 0.53 *** ***
20260104 14:34:12 * SSMIS-17 85-92GHz 30.0 -15.54 58.87 -15.54 58.88 0.30 0.85 2.60 1.3
20260104 10:47:27 GMI 85-92GHz 30.0 -16.00 60.25 -16.03 60.07 0.33 0.95 1.40 7.8
20260104 10:47:27 * GMI 37GHz 30.0 -16.00 59.89 -16.03 59.71 0.24 0.67 0.60 ***
20260104 05:48:00 * Metop-C ASCAT 30.0 -15.46 60.93 -15.44 61.02 0.20 0.56 *** ***
20260104 05:09:00 * Metop-A ASCAT 30.0 -15.37 61.64 -15.39 61.54 0.24 0.68 *** ***
20260103 21:27:26 * GMI 85-92GHz 31.1 -15.18 62.33 -15.13 62.41 0.17 0.48 3.00 47.2
20260103 21:27:26 GMI 37GHz 31.1 -15.48 63.06 -15.43 63.14 0.53 1.49 0.70 ***
20260103 20:50:25 AMSR2 85-92GHz 31.3 *** *** *** *** *** *** 1.60 ***
20260103 20:50:25 AMSR2 37GHz 31.3 -15.35 62.80 -15.33 62.83 0.30 0.83 0.70 ***
20260103 17:00:00 * Metop-C ASCAT 32.9 -15.19 63.75 -15.21 63.72 0.12 0.34 *** ***
20260103 14:41:01 * SSMIS-16 85-92GHz 33.9 -15.46 62.83 -15.45 62.85 0.10 0.29 3.00 0.0
20260103 04:27:00 * Metop-C ASCAT 35.0 -14.81 65.02 -14.84 64.86 0.13 0.37 *** ***
20260102 13:21:40 * SSMIS-17 85-92GHz 35.0 -14.80 66.36 -14.73 66.27 0.47 1.33 2.40 0.6
20260102 12:18:52 SSMIS-18 85-92GHz 35.0 *** *** *** *** *** *** 3.00 ***
20260102 10:37:27 GMI 85-92GHz 35.0 -15.52 66.89 -15.47 66.83 0.34 0.96 1.50 5.0
20260102 10:37:27 * GMI 37GHz 35.0 -15.42 66.74 -15.37 66.68 0.21 0.59 0.70 ***
20260101 23:45:09 SSMIS-18 85-92GHz 35.3 -15.86 66.95 -15.86 66.97 0.51 1.43 1.40 0.4
20260101 21:02:36 AMSR2 85-92GHz 38.7 -15.81 67.72 -15.82 67.76 0.37 1.03 1.90 3.4
20260101 21:02:36 * AMSR2 37GHz 38.7 -16.06 67.36 -16.07 67.40 0.30 0.86 0.60 ***
20260101 17:00:00 * Metop-A ASCAT 43.7 -15.83 67.92 -15.82 67.88 0.12 0.35 *** ***
20260101 13:35:32 SSMIS-17 85-92GHz 48.0 -16.42 67.30 -16.41 67.23 0.43 1.22 2.80 0.2
20260101 11:17:26 GMI 85-92GHz 51.2 *** *** *** *** *** *** 3.00 ***
20260101 11:17:26 GMI 37GHz 51.2 *** *** *** *** *** *** 3.00 ***
20260101 05:12:00 Metop-C ASCAT 61.3 *** *** *** *** *** *** *** ***
20260101 05:09:00 * Metop-C ASCAT 61.4 -15.92 68.83 -15.91 68.80 0.14 0.40 *** ***
20260101 04:30:00 Metop-A ASCAT 62.5 -15.89 68.93 -15.87 68.86 0.14 0.41 *** ***
20260101 01:00:53 * SSMIS-17 85-92GHz 68.3 -15.85 68.54 -15.83 68.41 0.15 0.41 2.90 -0.9
20251231 21:57:26 * GMI 85-92GHz 69.9 -16.10 69.04 -16.09 69.19 0.13 0.37 0.30 94.8
20251231 21:57:26 GMI 37GHz 69.9 -16.15 69.56 -16.14 69.71 0.23 0.66 0.40 ***
20251231 20:19:24 * AMSR2 85-92GHz 69.8 -16.14 69.30 -16.14 69.28 0.12 0.33 0.30 100.0
20251231 20:19:24 AMSR2 37GHz 69.8 -16.09 69.77 -16.09 69.75 0.20 0.55 0.40 ***
20251231 16:24:00 Metop-C ASCAT 69.6 *** *** *** *** *** *** *** ***
20251231 16:21:00 Metop-C ASCAT 69.6 *** *** *** *** *** *** *** ***
20251231 13:49:38 * SSMIS-17 85-92GHz 69.5 -15.86 70.39 -15.87 70.30 0.11 0.32 0.30 100.0
20251231 03:51:00 Metop-C ASCAT 69.0 *** *** *** *** *** *** *** ***
20251231 01:15:00 * SSMIS-17 85-92GHz 68.8 -14.92 72.88 -14.96 72.67 0.11 0.31 0.20 100.0
20251230 22:31:57 * SSMIS-18 85-92GHz 68.7 -14.87 73.57 -14.90 73.40 0.11 0.32 3.00 0.0
20251230 13:56:16 * SSMIS-16 85-92GHz 68.2 -14.65 75.36 -14.68 75.25 0.11 0.30 0.10 100.0
20251230 11:21:24 SSMIS-18 85-92GHz 68.1 -14.63 75.83 -14.64 75.80 0.10 0.27 0.10 100.0
20251230 11:07:26 * GMI 85-92GHz 68.1 -14.57 75.88 -14.59 75.80 0.07 0.19 0.20 100.0
20251230 11:07:26 GMI 37GHz 68.1 -14.47 75.88 -14.49 75.80 0.20 0.58 0.40 ***
20251230 01:21:17 * SSMIS-16 85-92GHz 67.6 -14.17 78.02 -14.23 77.77 0.08 0.23 0.20 100.0
20251229 22:45:29 SSMIS-18 85-92GHz 67.4 -14.18 78.57 -14.22 78.41 0.09 0.27 0.20 100.0
20251229 21:47:26 * GMI 85-92GHz 67.4 -14.23 78.62 -14.16 78.90 0.07 0.20 0.30 100.0
20251229 21:47:26 GMI 37GHz 67.4 -14.28 78.52 -14.21 78.80 0.14 0.39 0.50 ***
20251229 20:31:08 * AMSR2 85-92GHz 67.3 -14.11 78.85 -14.11 78.85 0.07 0.21 0.20 100.0
20251229 20:31:08 AMSR2 37GHz 67.3 -14.26 78.95 -14.26 78.95 0.16 0.45 0.80 ***
20251229 16:21:00 * Metop-A ASCAT 67.1 -13.98 79.38 -14.05 79.13 0.26 0.74 *** ***
20251229 14:10:49 SSMIS-16 85-92GHz 67.0 *** *** *** *** *** *** 0.10 ***
20251229 12:37:51 * SSMIS-17 85-92GHz 66.9 -13.83 80.34 -13.77 80.58 0.10 0.28 0.10 75.8
20251229 08:02:12 * AMSR2 85-92GHz 66.7 -13.63 81.06 -13.65 80.96 0.07 0.20 0.10 100.0
20251229 08:02:12 AMSR2 37GHz 66.7 -13.58 81.01 -13.60 80.91 0.13 0.36 0.30 ***
20251229 04:30:00 Metop-C ASCAT 66.5 -13.14 81.04 -13.19 80.83 0.51 1.44 *** ***
20251229 00:02:00 * SSMIS-17 85-92GHz 66.3 -13.40 82.37 -13.38 82.48 0.11 0.32 0.10 96.0
20251228 19:47:47 * AMSR2 85-92GHz 66.0 -13.24 83.14 -13.28 83.00 0.08 0.22 0.10 100.0
20251228 19:47:47 AMSR2 37GHz 66.0 -13.34 83.14 -13.38 83.00 0.11 0.30 0.30 ***
20251228 15:45:00 * Metop-C ASCAT 65.8 -13.05 83.80 -12.99 84.04 0.19 0.53 *** ***
20251228 15:06:00 Metop-A ASCAT 65.8 *** *** *** *** *** *** *** ***
20251228 10:57:26 * GMI 85-92GHz 65.6 -12.94 84.66 -12.96 84.57 0.07 0.20 0.30 100.0
20251228 10:57:26 GMI 37GHz 65.6 -12.99 84.72 -13.01 84.62 0.13 0.38 0.20 ***
20251228 10:08:46 * SSMIS-18 85-92GHz 65.5 -12.91 84.81 -12.96 84.56 0.08 0.22 0.20 100.0
20251228 03:12:00 * Metop-C ASCAT 65.1 -12.36 86.02 -12.33 86.13 0.16 0.45 *** ***
20251228 03:09:00 Metop-C ASCAT 65.1 -12.36 86.02 -12.33 86.12 0.16 0.46 *** ***
20251228 02:30:00 Metop-A ASCAT 65.0 *** *** *** *** *** *** *** ***
20251228 00:15:41 * SSMIS-17 85-92GHz 65.0 -12.26 86.41 -12.24 86.52 0.07 0.20 0.30 100.0
20251227 15:24:00 Metop-A ASCAT 61.4 *** *** *** *** *** *** *** ***
20251227 10:22:55 * SSMIS-18 85-92GHz 60.0 -11.86 88.25 -11.89 88.08 0.11 0.31 2.90 14.1
20251227 00:20:34 * SSMIS-16 85-92GHz 60.0 -11.50 89.75 -11.50 89.86 0.15 0.43 0.20 59.9
20251226 22:22:27 * GMI 85-92GHz 59.3 -11.55 89.93 -11.55 89.80 0.14 0.38 0.20 98.6
20251226 22:22:27 GMI 37GHz 59.3 -11.75 90.34 -11.75 90.21 0.15 0.43 0.30 ***
20251226 21:46:18 SSMIS-18 85-92GHz 59.1 -11.75 90.15 -11.76 90.28 0.17 0.49 2.70 5.2
20251226 13:11:11 SSMIS-16 85-92GHz 55.0 -12.40 90.87 -12.39 90.72 0.33 0.93 0.50 14.5
20251226 11:39:39 * SSMIS-17 85-92GHz 54.9 -12.05 91.14 -12.05 91.17 0.19 0.53 3.00 9.2
20251226 10:47:27 GMI 85-92GHz 54.5 -12.01 91.33 -12.00 91.23 0.31 0.87 0.10 13.9
20251226 10:47:27 GMI 37GHz 54.5 -11.91 91.84 -11.90 91.74 0.15 0.43 0.30 ***
20251226 10:37:06 * SSMIS-18 85-92GHz 54.4 -12.17 91.15 -12.14 91.03 0.11 0.30 3.00 0.0
20251226 07:31:31 AMSR2 85-92GHz 53.1 -12.11 91.98 -12.05 91.81 0.21 0.59 0.10 78.5
20251226 07:31:31 * AMSR2 37GHz 53.1 -12.06 92.23 -12.00 92.07 0.21 0.58 0.30 ***
20251226 03:12:00 Metop-A ASCAT 51.3 *** *** *** *** *** *** *** ***
20251226 00:34:09 * SSMIS-16 85-92GHz 50.0 -12.35 92.91 -12.35 93.07 0.12 0.34 2.90 1.3
20251225 22:00:09 SSMIS-18 85-92GHz 49.2 -12.55 93.36 -12.55 93.15 0.12 0.33 2.50 2.5
20251225 19:16:39 * AMSR2 85-92GHz 48.0 -12.38 93.93 -12.39 93.77 0.11 0.31 0.30 100.0
20251225 19:16:39 AMSR2 37GHz 48.0 -12.33 93.98 -12.34 93.82 0.12 0.34 0.20 ***
20251225 15:06:00 Metop-C ASCAT 46.3 *** *** *** *** *** *** *** ***
20251225 14:24:00 Metop-A ASCAT 45.0 -11.90 95.09 -11.90 95.08 0.22 0.61 *** ***
20251225 11:53:52 * SSMIS-17 85-92GHz 45.0 -12.55 94.96 -12.54 95.01 0.17 0.48 0.10 11.7
20251225 06:48:44 AMSR2 85-92GHz 45.0 -12.11 95.53 -12.05 95.70 0.16 0.46 0.20 75.9
20251225 06:48:44 * AMSR2 37GHz 45.0 -12.26 95.68 -12.20 95.85 0.11 0.32 0.20 ***
20251225 01:54:00 Metop-A ASCAT 45.0 -12.25 96.77 -12.27 96.70 1.30 3.69 *** ***
20251225 00:47:56 SSMIS-16 85-92GHz 45.0 *** *** *** *** *** *** 2.30 ***
20251224 23:17:15 SSMIS-17 85-92GHz 44.7 -12.10 96.93 -12.10 96.90 0.52 1.46 2.50 3.7
20251224 22:07:26 GMI 85-92GHz 44.2 -11.79 97.25 -11.81 97.10 0.29 0.83 1.10 21.3
20251224 22:07:26 * GMI 37GHz 44.2 -11.89 96.79 -11.91 96.64 0.17 0.48 0.40 ***
20251224 18:33:36 AMSR2 85-92GHz 42.7 -11.76 97.25 -11.75 97.35 0.62 1.76 1.70 0.1
20251224 18:33:36 AMSR2 37GHz 42.7 *** *** *** *** *** *** 1.60 ***
20251224 15:27:00 * Metop-C ASCAT 40.5 -11.75 97.26 -11.74 97.34 0.18 0.50 *** ***
20251224 14:45:00 Metop-A ASCAT 41.1 *** *** *** *** *** *** *** ***
20251224 12:08:13 SSMIS-17 85-92GHz 40.0 -11.90 97.59 -11.90 97.63 0.15 0.43 2.70 3.6
20251224 11:57:39 * SSMIS-16 85-92GHz 40.0 -11.65 97.60 -11.65 97.63 0.13 0.36 2.10 5.5
20251223 23:31:15 * SSMIS-17 85-92GHz 40.0 -12.11 98.95 -12.11 98.95 0.18 0.52 2.60 15.3
20251223 22:52:27 GMI 85-92GHz 40.0 *** *** *** *** *** *** 3.00 ***
20251223 22:52:27 GMI 37GHz 40.0 *** *** *** *** *** *** 3.00 ***
20251223 11:17:26 GMI 85-92GHz 40.0 -12.42 99.15 -12.42 99.13 0.31 0.87 0.40 8.9
20251223 11:17:26 * GMI 37GHz 40.0 -12.27 99.41 -12.27 99.39 0.20 0.56 3.00 ***
20251223 07:00:46 AMSR2 85-92GHz 40.0 -12.58 99.61 -12.52 99.50 0.21 0.58 0.40 75.9
20251223 07:00:46 * AMSR2 37GHz 40.0 -12.68 99.81 -12.62 99.70 0.16 0.46 2.10 ***
20251223 03:12:00 * Metop-C ASCAT 40.1 -12.54 99.73 -12.57 99.79 0.12 0.35 *** ***
20251223 02:33:00 Metop-A ASCAT 40.0 -12.46 99.78 -12.47 99.78 0.15 0.42 *** ***
20251222 23:34:35 * SSMIS-16 85-92GHz 39.8 -12.86 100.40 -12.86 100.40 0.23 0.64 1.90 -2.4
20251222 18:45:58 AMSR2 85-92GHz 37.8 -12.76 100.71 -12.79 100.84 0.20 0.55 0.20 80.8
20251222 18:45:58 * AMSR2 37GHz 37.8 -12.71 100.30 -12.74 100.43 0.16 0.46 0.50 ***
20251222 13:45:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** ***
20251222 12:25:02 SSMIS-16 85-92GHz 35.2 *** *** *** *** *** *** 1.30 ***
20251222 09:52:23 * SSMIS-18 85-92GHz 35.9 -12.98 101.53 -12.89 101.66 0.34 0.96 0.50 10.5
20251221 23:47:56 * SSMIS-16 85-92GHz 40.1 -12.15 102.47 -12.15 102.49 0.24 0.67 0.70 7.6
20251221 22:42:27 * GMI 85-92GHz 40.5 -12.30 102.60 -12.30 102.54 0.18 0.50 1.10 24.4
20251221 22:42:27 GMI 37GHz 40.5 -12.25 102.75 -12.25 102.69 0.20 0.58 2.70 ***
20251221 21:15:14 SSMIS-18 85-92GHz 41.1 -12.17 103.01 -12.18 103.07 0.21 0.61 3.00 4.7
20251221 02:15:00 Metop-C ASCAT 45.0 *** *** *** *** *** *** *** ***
20251221 01:33:00 * Metop-A ASCAT 45.0 -12.35 104.45 -12.34 104.36 0.16 0.45 *** ***
20251221 00:01:52 SSMIS-16 85-92GHz 45.0 -12.15 104.70 -12.15 104.75 0.19 0.53 0.80 58.3
20251220 22:33:13 SSMIS-17 85-92GHz 44.4 -12.05 104.93 -12.05 104.85 0.45 1.28 0.40 3.8
20251220 21:29:36 SSMIS-18 85-92GHz 44.0 -11.79 104.80 -11.79 104.87 0.60 1.69 3.00 0.0
20251220 14:27:00 * Metop-A ASCAT 41.0 -12.25 106.08 -12.25 106.08 0.17 0.49 *** ***
20251220 11:52:26 GMI 85-92GHz 40.0 -12.10 105.62 -12.09 105.66 0.33 0.93 1.30 3.2
20251220 11:52:26 GMI 37GHz 40.0 -12.20 106.34 -12.19 106.38 0.28 0.80 1.00 ***
20251220 06:30:15 * AMSR2 85-92GHz 40.0 -12.07 106.08 -12.03 106.25 0.13 0.35 3.00 -4.9
20251220 06:30:15 AMSR2 37GHz 40.0 -12.07 105.92 -12.03 106.10 0.16 0.44 0.20 ***
20251220 02:33:00 * Metop-C ASCAT 40.0 -12.20 106.90 -12.20 106.90 0.14 0.39 *** ***
20251220 01:54:00 Metop-A ASCAT 40.0 -12.30 107.17 -12.31 107.08 0.16 0.44 *** ***
20251219 22:47:10 * SSMIS-17 85-92GHz 39.5 -11.90 107.06 -11.90 106.98 0.12 0.35 3.00 -4.8
20251219 18:15:01 AMSR2 85-92GHz 37.6 -11.77 107.30 -11.78 107.36 0.51 1.43 0.50 2.5
20251219 18:15:01 * AMSR2 37GHz 37.6 -12.02 107.30 -12.03 107.36 0.37 1.06 0.30 ***
20251219 13:48:00 Metop-C ASCAT 35.0 *** *** *** *** *** *** *** ***
20251218 23:12:27 GMI 85-92GHz 35.0 -12.60 109.01 -12.60 108.99 0.29 0.83 1.40 3.6
20251218 23:12:27 GMI 37GHz 35.0 -12.65 108.96 -12.65 108.94 0.33 0.94 2.30 ***
20251218 23:01:28 * SSMIS-17 85-92GHz 35.0 -12.60 108.97 -12.60 108.94 0.27 0.75 1.40 3.2
20251218 20:16:38 * SSMIS-18 85-92GHz 35.0 -12.19 107.74 -12.19 107.72 0.14 0.40 3.00 -7.2
20251218 13:27:00 * Metop-A ASCAT 35.0 -12.29 109.67 -12.31 109.58 0.16 0.45 *** ***
20251218 09:07:07 * SSMIS-18 85-92GHz 35.0 -11.91 109.24 -11.89 109.30 0.13 0.37 3.00 0.4
20251218 06:42:20 * AMSR2 85-92GHz 35.0 -11.80 109.48 -11.76 109.59 0.15 0.43 3.00 -1.4
20251218 06:42:20 AMSR2 37GHz 35.0 -11.85 109.59 -11.81 109.69 0.25 0.70 0.20 ***

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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