-- 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
20241009 16:51:16 SSMIS-16 85-92GHz 40.5 *** *** *** *** *** *** 2.20 ***
20241009 16:11:36 SSMIS-18 85-92GHz 40.8 *** *** *** *** *** *** 3.00 ***
20241009 14:18:56 GMI 85-92GHz 41.5 *** *** *** *** *** *** 3.00 ***
20241009 14:18:56 GMI 37GHz 41.5 *** *** *** *** *** *** 3.00 ***
20241009 11:27:00 Metop-C ASCAT 42.7 *** *** *** *** *** *** *** ***
20241008 22:18:00 * Metop-A ASCAT 48.2 42.89 -17.16 42.93 -15.99 0.41 1.17 *** ***
20241008 21:30:00 Metop-C ASCAT 48.5 43.07 -18.08 43.05 -18.68 0.48 1.35 *** ***
20241008 19:02:14 SSMIS-17 85-92GHz 49.6 *** *** *** *** *** *** 3.00 ***
20241008 18:43:31 SSMIS-16 85-92GHz 49.7 *** *** *** *** *** *** 3.00 ***
20241008 16:33:55 GMI 85-92GHz 50.6 *** *** *** *** *** *** 1.50 ***
20241008 16:33:55 GMI 37GHz 50.6 *** *** *** *** *** *** 0.50 ***
20241008 16:25:19 * SSMIS-18 85-92GHz 50.7 42.28 -21.55 42.30 -20.53 0.42 1.18 2.00 1.8
20241008 13:58:27 AMSR2 85-92GHz 51.7 42.66 -23.50 42.67 -22.91 0.46 1.30 3.00 0.0
20241008 13:58:27 AMSR2 37GHz 51.7 *** *** *** *** *** *** 0.20 ***
20241008 10:54:00 * Metop-A ASCAT 53.0 43.45 -26.50 43.45 -25.87 0.23 0.64 *** ***
20241008 09:16:56 SSMIS-17 85-92GHz 53.6 43.09 -27.39 43.08 -27.77 0.28 0.79 0.80 5.2
20241008 08:57:57 SSMIS-16 85-92GHz 53.8 43.18 -27.41 43.18 -27.56 0.52 1.46 3.00 0.7
20241008 06:38:55 SSMIS-18 85-92GHz 54.7 43.26 -28.86 43.25 -29.44 0.42 1.18 0.90 1.8
20241008 04:29:49 AMSR2 85-92GHz 55.6 43.30 -30.30 43.35 -29.51 0.37 1.04 0.70 3.1
20241008 04:29:49 * AMSR2 37GHz 55.6 43.20 -31.13 43.25 -30.34 0.28 0.80 0.90 ***
20241008 01:23:55 GMI 85-92GHz 56.9 43.18 -32.12 43.30 -31.31 0.50 1.41 0.80 1.6
20241008 01:23:55 GMI 37GHz 56.9 43.03 -33.35 43.15 -32.55 0.35 0.98 1.50 ***
20241007 23:33:00 * Metop-C ASCAT 57.7 42.99 -33.67 43.01 -33.55 0.16 0.44 *** ***
20241007 22:39:00 * Metop-A ASCAT 58.1 43.08 -34.38 43.21 -33.76 0.16 0.46 *** ***
20241007 20:38:41 SSMIS-16 85-92GHz 58.9 *** *** *** *** *** *** 0.70 ***
20241007 18:19:56 SSMIS-18 85-92GHz 59.9 42.40 -35.95 42.31 -36.25 0.45 1.26 1.40 3.2
20241007 17:13:55 GMI 85-92GHz 60.4 42.28 -36.38 42.36 -36.12 0.45 1.27 1.50 2.4
20241007 17:13:55 GMI 37GHz 60.4 41.73 -37.73 41.81 -37.47 0.53 1.51 1.30 ***
20241007 12:57:00 * Metop-A ASCAT 62.8 41.22 -39.67 40.92 -40.21 0.14 0.39 *** ***
20241007 12:09:00 Metop-C ASCAT 63.3 41.17 -39.83 41.07 -40.01 0.16 0.44 *** ***
20241007 09:31:54 SSMIS-17 85-92GHz 64.7 40.27 -39.84 40.09 -40.20 0.32 0.91 1.50 3.2
20241007 09:12:57 * SSMIS-16 85-92GHz 64.9 40.30 -40.11 40.19 -40.33 0.31 0.87 1.20 4.1
20241007 06:54:43 SSMIS-18 85-92GHz 65.0 39.72 -41.34 39.44 -41.86 0.29 0.81 2.00 4.0
20241007 05:26:33 AMSR2 85-92GHz 65.5 *** *** *** *** *** *** 0.70 ***
20241007 05:26:33 * AMSR2 37GHz 65.5 38.66 -43.80 38.74 -43.67 0.19 0.54 3.00 ***
20241006 21:10:21 * SSMIS-17 85-92GHz 74.7 36.91 -45.38 36.79 -45.58 0.21 0.60 1.60 4.3
20241006 20:50:43 SSMIS-16 85-92GHz 75.3 36.41 -46.10 36.39 -46.15 0.23 0.66 2.70 1.1
20241006 18:32:14 SSMIS-18 85-92GHz 79.1 36.09 -46.21 35.88 -46.44 0.18 0.51 1.50 5.7
20241006 17:53:55 GMI 85-92GHz 80.1 35.72 -46.96 35.68 -46.99 0.20 0.58 2.20 0.1
20241006 17:53:55 GMI 37GHz 80.1 35.77 -47.08 35.73 -47.12 0.16 0.45 1.20 ***
20241006 15:47:23 AMSR2 85-92GHz 81.8 35.56 -46.95 35.32 -47.15 0.16 0.45 2.90 32.5
20241006 15:47:23 * AMSR2 37GHz 81.8 35.16 -47.81 34.92 -48.01 0.13 0.36 1.20 ***
20241006 13:18:00 Metop-A ASCAT 83.9 34.71 -48.45 35.06 -48.20 0.16 0.45 *** ***
20241006 12:36:00 * Metop-C ASCAT 85.0 34.54 -48.73 34.30 -48.88 0.14 0.38 *** ***
20241006 12:33:00 Metop-C ASCAT 85.0 34.62 -48.07 34.39 -48.21 0.31 0.88 *** ***
20241006 09:48:04 SSMIS-17 85-92GHz 88.7 33.31 -48.60 32.93 -48.81 0.15 0.44 3.00 28.3
20241006 09:28:29 * SSMIS-16 85-92GHz 89.2 33.25 -48.67 32.98 -48.80 0.14 0.41 2.90 39.7
20241006 07:10:25 SSMIS-18 85-92GHz 93.0 32.91 -48.88 32.40 -49.00 0.15 0.41 2.70 33.2
20241006 04:45:41 AMSR2 85-92GHz 96.0 31.92 -49.32 32.28 -49.28 0.14 0.40 0.80 31.3
20241006 04:45:41 * AMSR2 37GHz 96.0 31.82 -49.80 32.18 -49.75 0.13 0.38 1.30 ***
20241006 00:57:00 Metop-A ASCAT 100.0 *** *** *** *** *** *** *** ***
20241006 00:12:00 * Metop-C ASCAT 100.0 30.66 -50.20 30.52 -50.22 0.16 0.45 *** ***
20241005 21:22:18 * SSMIS-17 85-92GHz 102.2 29.51 -50.19 29.35 -50.25 0.15 0.42 0.30 54.0
20241005 21:02:12 SSMIS-16 85-92GHz 102.5 29.42 -50.28 29.34 -50.31 0.16 0.44 0.30 50.5
20241005 18:43:59 SSMIS-18 85-92GHz 105.0 28.78 -50.45 28.48 -50.50 0.15 0.41 0.30 66.9
20241005 16:40:26 * AMSR2 85-92GHz 105.0 28.16 -50.38 28.52 -50.32 0.13 0.37 0.50 98.2
20241005 16:40:26 AMSR2 37GHz 105.0 28.16 -50.43 28.52 -50.38 0.13 0.37 0.30 ***
20241005 12:57:00 Metop-C ASCAT 105.0 *** *** *** *** *** *** *** ***
20241005 10:04:04 * SSMIS-17 85-92GHz 106.6 26.29 -50.41 26.01 -50.33 0.11 0.31 0.50 100.0
20241005 09:43:59 * SSMIS-16 85-92GHz 106.9 26.26 -50.33 26.06 -50.28 0.11 0.30 0.60 100.0
20241005 07:26:15 * SSMIS-18 85-92GHz 108.8 25.69 -50.36 25.95 -50.44 0.11 0.31 0.70 98.5
20241004 21:34:44 * SSMIS-17 85-92GHz 115.0 23.79 -49.56 23.65 -49.47 0.11 0.32 0.30 100.0
20241004 21:14:08 SSMIS-16 85-92GHz 115.0 23.69 -49.58 23.60 -49.53 0.13 0.36 0.30 97.1
20241004 18:56:04 * SSMIS-18 85-92GHz 115.0 23.32 -49.47 23.14 -49.35 0.12 0.34 0.30 100.0
20241004 13:18:00 Metop-C ASCAT 118.9 22.51 -48.99 22.69 -49.11 0.16 0.46 *** ***
20241004 12:24:00 * Metop-A ASCAT 120.0 22.46 -48.81 22.38 -48.74 0.14 0.39 *** ***
20241004 09:58:31 * SSMIS-16 85-92GHz 121.7 22.33 -48.45 22.21 -48.28 0.11 0.32 0.30 100.0
20241004 07:40:46 * SSMIS-18 85-92GHz 123.6 22.07 -48.13 22.17 -48.29 0.10 0.28 0.30 100.0
20241004 00:51:00 * Metop-C ASCAT 125.0 21.15 -47.32 21.04 -47.19 0.16 0.46 *** ***
20241003 21:26:59 * SSMIS-16 85-92GHz 118.6 20.82 -46.92 20.78 -46.83 0.09 0.27 0.30 100.0
20241003 19:08:57 SSMIS-18 85-92GHz 111.9 20.80 -46.72 20.70 -46.53 0.10 0.29 0.40 100.0
20241003 18:23:55 GMI 85-92GHz 110.7 20.75 -46.41 20.70 -46.32 0.10 0.29 0.40 100.0
20241003 18:23:55 GMI 37GHz 110.7 20.75 -46.46 20.70 -46.37 0.10 0.29 0.20 ***
20241003 16:50:41 * AMSR2 85-92GHz 110.0 20.57 -46.25 20.65 -46.37 0.09 0.26 0.40 100.0
20241003 16:50:41 AMSR2 37GHz 110.0 20.57 -46.25 20.65 -46.37 0.10 0.29 0.20 ***
20241003 08:52:39 * SSMIS-17 85-92GHz 107.4 19.97 -45.06 19.96 -45.04 0.13 0.38 0.40 83.5
20241003 04:58:55 * GMI 85-92GHz 105.0 19.43 -44.50 19.47 -44.58 0.11 0.30 0.50 100.0
20241003 04:58:55 GMI 37GHz 105.0 19.43 -44.50 19.47 -44.58 0.12 0.35 0.30 ***
20241003 04:18:08 * AMSR2 85-92GHz 105.0 19.30 -44.50 19.37 -44.63 0.10 0.29 0.50 100.0
20241003 04:18:08 AMSR2 37GHz 105.0 19.35 -44.50 19.42 -44.63 0.11 0.32 0.30 ***
20241003 00:15:00 Metop-A ASCAT 105.4 18.72 -44.22 18.68 -44.18 0.31 0.87 *** ***
20241002 16:07:00 AMSR2 85-92GHz 78.4 18.28 -43.14 18.05 -42.90 0.12 0.33 1.00 99.1
20241002 16:07:00 * AMSR2 37GHz 78.4 18.28 -43.20 18.05 -42.96 0.09 0.26 0.50 ***
20241002 09:07:12 SSMIS-17 85-92GHz 72.6 17.72 -42.35 17.69 -42.30 0.13 0.38 0.90 84.4
20241002 08:45:42 * SSMIS-16 85-92GHz 72.3 17.69 -42.14 17.69 -42.14 0.11 0.30 0.90 97.5
20241002 06:28:17 * SSMIS-18 85-92GHz 70.0 17.35 -41.72 17.28 -41.59 0.15 0.43 1.00 76.2
20241001 23:51:00 Metop-C ASCAT 65.0 *** *** *** *** *** *** *** ***
20241001 20:33:11 * SSMIS-17 85-92GHz 65.0 16.01 -39.83 16.02 -39.85 0.14 0.38 1.00 78.7
20241001 20:11:08 * SSMIS-16 85-92GHz 65.0 15.97 -39.73 16.01 -39.79 0.14 0.39 0.90 77.1
20241001 18:08:56 GMI 85-92GHz 65.0 16.12 -39.46 16.07 -39.41 0.21 0.58 0.20 92.9
20241001 18:08:56 GMI 37GHz 65.0 15.82 -39.62 15.77 -39.56 0.18 0.52 0.30 ***
20241001 17:53:30 SSMIS-18 85-92GHz 64.9 15.34 -39.84 15.32 -39.82 0.27 0.76 2.30 24.5
20241001 12:42:00 * Metop-C ASCAT 60.0 15.01 -39.03 14.92 -38.86 0.14 0.41 *** ***
20241001 11:48:00 * Metop-A ASCAT 59.7 15.04 -39.03 15.03 -39.02 0.13 0.38 *** ***
20241001 09:21:49 * SSMIS-17 85-92GHz 55.6 14.91 -37.93 14.89 -37.81 0.16 0.44 1.10 77.8
20241001 08:59:38 SSMIS-16 85-92GHz 55.0 14.84 -37.80 14.83 -37.75 0.22 0.63 1.20 53.3
20241001 06:42:18 SSMIS-18 85-92GHz 51.2 14.69 -37.59 14.63 -37.40 0.31 0.87 1.50 17.2
20241001 04:48:56 GMI 85-92GHz 50.0 14.36 -37.07 14.43 -37.26 0.22 0.62 1.00 81.9
20241001 04:48:56 * GMI 37GHz 50.0 14.31 -37.23 14.38 -37.41 0.16 0.45 0.90 ***
20241001 04:31:33 AMSR2 85-92GHz 50.0 14.40 -37.00 14.48 -37.24 0.43 1.22 0.90 16.4
20241001 04:31:33 AMSR2 37GHz 50.0 14.35 -37.21 14.43 -37.45 0.24 0.68 0.90 ***
20241001 00:09:00 * Metop-C ASCAT 50.0 14.26 -36.53 14.22 -36.45 0.15 0.41 *** ***
20240930 23:15:00 * Metop-A ASCAT 50.0 14.33 -36.42 14.38 -36.52 0.13 0.38 *** ***
20240930 20:46:14 SSMIS-17 85-92GHz 50.0 13.88 -36.15 13.87 -36.15 0.41 1.16 0.80 5.8
20240930 20:23:35 SSMIS-16 85-92GHz 50.0 13.82 -35.97 13.87 -36.04 0.50 1.40 0.60 3.4
20240930 18:06:23 * SSMIS-18 85-92GHz 50.0 13.60 -35.32 13.59 -35.27 0.25 0.71 0.30 47.9
20240930 12:09:00 * Metop-A ASCAT 45.0 13.35 -34.37 13.35 -34.32 0.16 0.45 *** ***
20240930 11:21:00 * Metop-C ASCAT 43.4 13.42 -34.21 13.40 -34.26 0.26 0.72 *** ***
20240930 05:28:55 GMI 85-92GHz 30.0 *** *** *** *** *** *** 3.00 ***
20240930 05:28:55 GMI 37GHz 30.0 *** *** *** *** *** *** 3.00 ***
20240930 03:48:49 * AMSR2 85-92GHz 30.5 14.35 -33.37 14.35 -33.22 0.50 1.41 1.70 3.2
20240930 03:48:49 AMSR2 37GHz 30.5 *** *** *** *** *** *** 2.20 ***
20240929 20:37:27 SSMIS-16 85-92GHz 30.0 14.35 -32.61 14.35 -32.62 0.61 1.72 2.80 0.4
20240929 18:20:13 SSMIS-18 85-92GHz 30.0 13.80 -31.79 13.79 -31.72 0.45 1.28 2.00 1.1
20240929 17:58:55 GMI 85-92GHz 30.0 *** *** *** *** *** *** 0.20 ***
20240929 17:58:55 * GMI 37GHz 30.0 14.60 -32.30 14.60 -32.28 0.35 0.99 0.80 ***

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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