-- 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
20250715 11:33:00 * Metop-C ASCAT 32.7 48.01 150.63 48.01 150.60 0.34 0.95 *** ***
20250715 11:30:00 Metop-C ASCAT 32.7 48.01 150.45 48.01 150.45 0.45 1.27 *** ***
20250715 10:42:00 Metop-A ASCAT 33.0 *** *** *** *** *** *** *** ***
20250715 10:39:00 Metop-A ASCAT 33.1 *** *** *** *** *** *** *** ***
20250715 07:01:22 * SSMIS-17 85-92GHz 34.6 47.03 149.32 47.36 150.12 0.37 1.03 0.90 2.8
20250715 04:38:26 * GMI 85-92GHz 35.8 46.30 147.86 46.53 148.23 0.30 0.85 0.90 4.9
20250715 04:38:26 GMI 37GHz 35.8 46.40 146.12 46.63 146.49 0.47 1.34 3.00 ***
20250715 00:06:00 * Metop-C ASCAT 38.3 45.52 144.48 45.29 144.29 0.23 0.66 *** ***
20250714 20:33:26 GMI 85-92GHz 40.0 43.74 144.17 43.72 144.15 0.60 1.69 0.30 0.2
20250714 20:33:26 * GMI 37GHz 40.0 43.19 143.27 43.17 143.25 0.41 1.17 3.00 ***
20250714 16:09:00 AMSR2 85-92GHz 40.0 41.94 143.27 42.54 143.61 0.52 1.46 0.60 0.5
20250714 16:09:00 * AMSR2 37GHz 40.0 41.59 142.73 42.19 143.07 0.32 0.90 0.80 ***
20250714 11:51:00 * Metop-C ASCAT 40.1 39.53 142.37 39.36 142.37 0.18 0.50 *** ***
20250714 05:23:27 GMI 85-92GHz 45.0 36.53 142.54 36.58 142.55 0.21 0.61 2.90 7.6
20250714 05:23:27 GMI 37GHz 45.0 36.63 142.36 36.68 142.36 0.19 0.52 0.40 ***
20250714 04:08:37 AMSR2 85-92GHz 45.0 35.95 142.49 36.59 142.57 0.21 0.60 2.00 16.4
20250714 04:08:37 * AMSR2 37GHz 45.0 35.90 142.37 36.54 142.45 0.17 0.48 0.40 ***
20250713 23:39:00 * Metop-A ASCAT 45.3 34.07 141.79 34.02 141.79 0.17 0.47 *** ***
20250713 06:08:26 * GMI 85-92GHz 35.0 27.73 143.00 27.57 142.96 0.29 0.81 2.40 6.8
20250713 06:08:26 GMI 37GHz 35.0 27.68 142.89 27.52 142.84 0.59 1.67 1.40 ***
20250713 00:03:00 Metop-A ASCAT 35.0 *** *** *** *** *** *** *** ***
20250712 20:18:26 * GMI 85-92GHz 35.0 25.25 142.24 25.30 142.24 0.45 1.27 1.30 2.3
20250712 20:18:26 GMI 37GHz 35.0 *** *** *** *** *** *** 1.30 ***
20250712 16:25:38 AMSR2 85-92GHz 35.0 25.12 141.86 25.17 141.99 0.33 0.94 1.90 8.1
20250712 16:25:38 * AMSR2 37GHz 35.0 25.17 141.36 25.22 141.49 0.29 0.81 2.50 ***
20250712 11:36:00 * Metop-A ASCAT 35.0 24.93 141.48 24.92 141.48 0.15 0.42 *** ***
20250712 06:48:26 GMI 85-92GHz 35.3 25.36 140.99 25.36 140.92 0.39 1.10 3.00 3.2
20250712 06:48:26 GMI 37GHz 35.3 25.01 140.77 25.01 140.70 0.36 1.03 2.90 ***
20250712 00:21:00 * Metop-A ASCAT 35.0 25.10 140.47 25.11 140.38 0.16 0.45 *** ***
20250711 20:58:27 GMI 85-92GHz 35.0 25.20 140.30 25.20 140.26 0.57 1.62 0.30 0.4
20250711 20:58:27 GMI 37GHz 35.0 25.55 140.69 25.55 140.64 0.62 1.76 3.00 ***
20250711 11:57:00 * Metop-A ASCAT 30.0 25.10 139.81 25.09 139.82 0.12 0.35 *** ***
20250711 11:09:00 Metop-C ASCAT 30.0 *** *** *** *** *** *** *** ***
20250711 03:35:19 * AMSR2 85-92GHz 30.0 24.96 140.30 24.95 140.32 0.25 0.71 1.80 17.7
20250711 03:35:19 AMSR2 37GHz 30.0 25.06 140.08 25.05 140.10 0.36 1.01 0.10 ***

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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