-- 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
20260121 09:43:01 * AMSR2 85-92GHz 50.0 -31.26 59.57 -30.82 59.28 0.22 0.63 1.20 49.0
20260121 09:43:01 AMSR2 37GHz 50.0 -31.31 59.28 -30.87 58.99 0.53 1.50 1.30 ***
20260121 06:42:27 GMI 85-92GHz 50.0 -30.16 58.29 -29.72 58.01 0.22 0.61 0.50 67.7
20260121 06:42:27 GMI 37GHz 50.0 -29.91 58.69 -29.47 58.41 0.31 0.88 3.00 ***
20260121 05:00:00 Metop-C ASCAT 50.0 -29.43 57.49 -29.62 57.61 0.27 0.77 *** ***
20260121 04:24:00 * Metop-A ASCAT 50.0 -29.16 57.64 -29.57 57.90 0.19 0.53 *** ***
20260121 04:21:00 Metop-A ASCAT 50.0 -29.15 57.40 -29.57 57.67 0.24 0.67 *** ***
20260120 21:37:11 AMSR2 85-92GHz 51.0 -26.80 56.79 -26.52 56.75 0.20 0.55 0.40 88.4
20260120 21:37:11 * AMSR2 37GHz 51.0 -27.10 56.79 -26.82 56.75 0.13 0.36 0.30 ***
20260120 17:45:00 Metop-C ASCAT 52.6 -26.39 56.40 -26.34 56.39 0.15 0.44 *** ***
20260120 17:06:00 Metop-A ASCAT 52.9 -26.06 56.55 -26.14 56.56 0.15 0.43 *** ***
20260120 15:49:03 * SSMIS-16 85-92GHz 53.4 -25.64 56.75 -25.38 56.73 0.12 0.35 0.30 90.6
20260120 04:39:00 Metop-A ASCAT 55.0 *** *** *** *** *** *** *** ***
20260119 20:53:02 AMSR2 85-92GHz 53.7 -22.50 59.04 -22.45 59.12 0.17 0.48 0.50 75.3
20260119 20:53:02 * AMSR2 37GHz 53.7 -22.50 58.93 -22.45 59.01 0.09 0.25 0.40 ***
20260119 18:09:00 * Metop-C ASCAT 52.6 -22.00 59.42 -21.93 59.55 0.13 0.37 *** ***
20260119 17:27:00 * Metop-A ASCAT 52.3 -21.63 59.51 -21.64 59.50 0.21 0.58 *** ***
20260119 06:27:27 GMI 85-92GHz 50.0 -21.27 61.71 -21.22 61.87 0.16 0.46 1.50 63.2
20260119 06:27:27 GMI 37GHz 50.0 -21.27 61.82 -21.22 61.98 0.22 0.62 0.90 ***
20260119 05:39:00 * Metop-C ASCAT 50.0 -21.08 61.69 -21.07 61.72 0.13 0.36 *** ***
20260119 05:03:00 Metop-A ASCAT 50.0 *** *** *** *** *** *** *** ***
20260119 05:00:00 * Metop-A ASCAT 50.0 -21.00 61.80 -21.02 61.72 0.14 0.41 *** ***
20260118 17:07:26 GMI 85-92GHz 50.0 -21.39 64.18 -21.40 64.11 0.24 0.67 0.50 50.1
20260118 17:07:26 * GMI 37GHz 50.0 -21.09 64.13 -21.10 64.06 0.20 0.57 0.30 ***
20260118 16:48:00 Metop-C ASCAT 50.0 *** *** *** *** *** *** *** ***
20260118 09:15:12 AMSR2 85-92GHz 51.1 -20.70 65.34 -20.59 65.45 0.23 0.66 0.80 63.2
20260118 09:15:12 * AMSR2 37GHz 51.1 -20.50 65.18 -20.39 65.29 0.20 0.58 0.40 ***
20260118 04:21:00 * Metop-C ASCAT 53.2 -19.61 65.82 -19.84 65.68 0.25 0.70 *** ***
20260117 21:03:52 AMSR2 85-92GHz 55.0 *** *** *** *** *** *** 0.10 ***
20260117 21:03:52 * AMSR2 37GHz 55.0 -18.60 67.02 -18.55 67.06 0.31 0.88 1.00 ***
20260117 16:30:00 Metop-A ASCAT 55.0 *** *** *** *** *** *** *** ***
20260117 06:17:27 GMI 85-92GHz 71.7 -18.32 67.98 -18.28 68.09 0.21 0.59 0.20 71.1
20260117 06:17:27 * GMI 37GHz 71.7 -18.37 68.19 -18.33 68.30 0.13 0.37 0.20 ***
20260117 04:03:00 Metop-A ASCAT 78.2 *** *** *** *** *** *** *** ***
20260117 04:00:00 * Metop-A ASCAT 78.3 -17.51 68.07 -17.45 68.27 0.12 0.35 *** ***
20260116 20:20:32 AMSR2 85-92GHz 96.1 *** *** *** *** *** *** 0.20 ***
20260116 20:20:32 * AMSR2 37GHz 96.1 -17.14 69.20 -17.15 69.18 0.14 0.39 0.30 ***
20260116 17:30:00 * Metop-C ASCAT 100.8 -16.86 69.58 -16.86 69.58 0.14 0.39 *** ***
20260116 16:51:00 * Metop-A ASCAT 101.9 -16.79 69.61 -16.81 69.53 0.15 0.42 *** ***
20260116 05:00:00 * Metop-C ASCAT 106.5 -16.56 71.20 -16.56 71.13 0.20 0.57 *** ***
20260116 04:21:00 Metop-A ASCAT 106.2 -16.56 71.33 -16.56 71.19 0.22 0.62 *** ***
20260115 17:42:26 * GMI 85-92GHz 100.9 -16.84 72.77 -16.84 72.80 0.11 0.31 0.20 100.0
20260115 17:42:26 GMI 37GHz 100.9 -16.99 72.82 -16.99 72.85 0.12 0.33 0.20 ***
20260115 16:09:00 Metop-C ASCAT 100.1 *** *** *** *** *** *** *** ***
20260115 13:36:17 * SSMIS-17 85-92GHz 98.8 -17.11 73.36 -17.11 73.24 0.12 0.35 0.20 100.0
20260115 06:12:26 GMI 85-92GHz 95.0 *** *** *** *** *** *** 3.00 ***
20260115 06:12:26 GMI 37GHz 95.0 *** *** *** *** *** *** 3.00 ***
20260115 03:42:00 Metop-C ASCAT 90.2 *** *** *** *** *** *** *** ***
20260114 20:32:29 AMSR2 85-92GHz 75.3 -17.14 75.36 -17.14 75.36 0.11 0.31 0.30 100.0
20260114 20:32:29 * AMSR2 37GHz 75.3 -17.19 75.36 -17.19 75.36 0.09 0.25 0.30 ***
20260114 15:54:00 Metop-A ASCAT 69.1 *** *** *** *** *** *** *** ***
20260114 13:51:33 * SSMIS-16 85-92GHz 68.3 -17.35 76.40 -17.35 76.34 0.19 0.54 0.20 63.3
20260114 11:09:48 SSMIS-18 85-92GHz 67.2 -17.45 76.66 -17.45 76.64 0.23 0.66 0.30 37.3
20260114 06:52:27 * GMI 85-92GHz 65.0 -17.25 76.92 -17.25 77.00 0.16 0.44 0.30 92.1
20260114 06:52:27 GMI 37GHz 65.0 -17.15 76.92 -17.15 77.00 0.16 0.46 0.20 ***
20260114 04:00:00 Metop-C ASCAT 67.5 *** *** *** *** *** *** *** ***
20260114 03:21:00 * Metop-A ASCAT 68.3 -16.90 77.09 -16.90 77.13 0.13 0.36 *** ***
20260114 01:17:27 * SSMIS-16 85-92GHz 70.9 -17.05 77.50 -17.05 77.45 0.12 0.35 0.40 100.0
20260113 19:49:31 * AMSR2 85-92GHz 77.7 -17.25 77.69 -17.25 77.67 0.10 0.29 0.30 100.0
20260113 19:49:31 AMSR2 37GHz 77.7 -17.10 77.53 -17.10 77.51 0.14 0.40 0.30 ***
20260113 17:32:26 * GMI 85-92GHz 80.8 -17.30 77.72 -17.30 77.72 0.10 0.29 0.30 99.1
20260113 17:32:26 GMI 37GHz 80.8 -17.20 77.62 -17.20 77.62 0.14 0.39 0.30 ***
20260113 16:51:00 * Metop-C ASCAT 81.9 -17.00 77.59 -17.00 77.56 0.14 0.39 *** ***
20260113 16:12:00 Metop-A ASCAT 83.0 -16.96 77.67 -16.95 77.61 0.20 0.56 *** ***
20260113 01:30:57 * SSMIS-16 85-92GHz 105.6 -17.09 78.05 -17.11 78.05 0.12 0.33 0.10 83.6
20260112 22:50:32 SSMIS-18 85-92GHz 108.9 -17.11 78.42 -17.13 78.42 0.15 0.42 0.20 12.2
20260112 18:12:26 GMI 85-92GHz 115.0 -16.91 77.95 -16.89 77.95 0.12 0.33 0.10 100.0
20260112 18:12:26 * GMI 37GHz 115.0 -17.06 78.05 -17.04 78.05 0.11 0.32 0.30 ***
20260112 16:33:00 Metop-A ASCAT 113.2 *** *** *** *** *** *** *** ***
20260112 14:19:08 * SSMIS-16 85-92GHz 110.4 -16.98 77.92 -16.99 77.92 0.11 0.32 0.10 80.9
20260112 12:39:08 * SSMIS-17 85-92GHz 108.3 -16.78 78.05 -16.74 78.03 0.12 0.33 0.10 90.9
20260112 04:42:00 * Metop-C ASCAT 97.3 -16.60 77.53 -16.63 77.55 0.15 0.42 *** ***
20260112 04:03:00 * Metop-A ASCAT 95.9 -16.42 77.62 -16.48 77.66 0.16 0.45 *** ***
20260111 23:04:29 * SSMIS-18 85-92GHz 85.6 -16.14 77.61 -16.16 77.63 0.10 0.28 0.30 100.0
20260111 20:01:31 * AMSR2 85-92GHz 79.2 -16.12 77.53 -16.15 77.55 0.09 0.27 0.40 100.0
20260111 20:01:31 AMSR2 37GHz 79.2 -16.07 77.42 -16.10 77.44 0.11 0.30 0.20 ***
20260111 15:54:00 Metop-C ASCAT 71.5 *** *** *** *** *** *** *** ***
20260111 07:27:26 GMI 85-92GHz 57.4 -14.98 76.96 -15.08 77.00 0.14 0.39 0.20 85.2
20260111 07:27:26 * GMI 37GHz 57.4 -15.28 76.70 -15.38 76.74 0.13 0.37 0.40 ***
20260110 23:18:15 * SSMIS-18 85-92GHz 46.6 -14.44 76.32 -14.46 76.34 0.16 0.45 0.60 90.2

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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