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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
20251009 17:27:00 * Metop-C ASCAT 30.3 18.09 -109.45 18.10 -109.33 0.43 1.22 *** ***
20251009 16:39:00 Metop-A ASCAT 30.8 17.36 -108.37 17.40 -108.08 3.36 9.49 *** ***
20251009 11:15:34 SSMIS-18 85-92GHz 33.7 17.46 -111.03 17.51 -110.86 0.32 0.91 2.70 2.9
20251009 11:13:26 * GMI 85-92GHz 33.8 17.51 -111.04 17.56 -110.86 0.30 0.84 2.90 4.6
20251009 11:13:26 GMI 37GHz 33.8 17.41 -110.99 17.46 -110.81 0.52 1.47 0.60 ***
20251009 04:12:00 Metop-A ASCAT 36.5 *** *** *** *** *** *** *** ***
20251008 17:48:00 * Metop-C ASCAT 39.8 15.59 -115.79 15.60 -115.75 0.37 1.04 *** ***
20251008 17:03:00 Metop-A ASCAT 39.2 *** *** *** *** *** *** *** ***
20251008 11:53:27 GMI 85-92GHz 35.0 15.50 -117.23 15.50 -117.22 0.26 0.72 1.90 18.9
20251008 11:53:27 GMI 37GHz 35.0 15.45 -116.98 15.45 -116.96 0.22 0.64 1.00 ***
20251008 09:03:32 AMSR2 85-92GHz 35.0 15.25 -117.29 15.25 -117.30 0.20 0.58 1.20 29.0
20251008 09:03:32 * AMSR2 37GHz 35.0 15.35 -117.24 15.35 -117.25 0.18 0.51 1.20 ***
20251008 05:18:00 Metop-C ASCAT 35.6 *** *** *** *** *** *** *** ***
20251007 20:50:28 AMSR2 85-92GHz 40.0 15.21 -118.68 15.20 -118.66 0.18 0.50 3.00 0.0
20251007 20:50:28 * AMSR2 37GHz 40.0 15.36 -118.73 15.35 -118.71 0.18 0.50 0.80 ***
20251007 18:09:00 Metop-C ASCAT 40.0 *** *** *** *** *** *** *** ***
20251007 17:24:00 * Metop-A ASCAT 40.5 15.48 -119.23 15.46 -119.20 0.14 0.39 *** ***
20251007 12:38:26 GMI 85-92GHz 45.0 *** *** *** *** *** *** 2.20 ***
20251007 12:38:26 GMI 37GHz 45.0 *** *** *** *** *** *** 1.40 ***
20251007 09:58:44 * AMSR2 85-92GHz 45.0 15.65 -120.26 15.70 -120.32 0.23 0.65 0.90 59.7
20251007 09:58:44 AMSR2 37GHz 45.0 15.75 -119.90 15.80 -119.96 0.30 0.86 1.20 ***
20251007 05:39:00 * Metop-C ASCAT 45.0 15.70 -120.21 15.70 -120.17 0.16 0.46 *** ***
20251006 23:13:26 GMI 85-92GHz 45.0 16.13 -120.62 16.12 -120.53 0.18 0.51 1.00 55.8
20251006 23:13:26 * GMI 37GHz 45.0 15.93 -120.83 15.92 -120.74 0.13 0.37 0.40 ***
20251006 21:45:59 AMSR2 85-92GHz 45.0 16.08 -120.84 16.13 -120.91 0.36 1.02 0.80 6.5
20251006 21:45:59 * AMSR2 37GHz 45.0 16.03 -120.99 16.08 -121.07 0.15 0.43 0.50 ***
20251006 17:45:00 * Metop-A ASCAT 45.4 16.16 -121.38 16.15 -121.35 0.13 0.36 *** ***
20251006 06:00:00 * Metop-C ASCAT 65.0 16.15 -122.55 16.15 -122.55 0.15 0.43 *** ***
20251006 05:12:00 * Metop-A ASCAT 65.7 15.90 -122.43 15.90 -122.34 0.17 0.47 *** ***
20251005 23:58:27 * GMI 85-92GHz 70.0 16.20 -123.00 16.20 -123.00 0.14 0.40 0.10 90.7
20251005 23:58:27 GMI 37GHz 70.0 16.15 -123.10 16.15 -123.10 0.18 0.50 0.20 ***
20251005 10:11:08 * AMSR2 85-92GHz 67.0 15.62 -124.02 15.60 -124.09 0.10 0.29 0.50 100.0
20251005 10:11:08 AMSR2 37GHz 67.0 15.52 -124.07 15.50 -124.15 0.11 0.30 0.20 ***
20251005 00:38:26 * GMI 85-92GHz 55.0 15.15 -124.10 15.11 -124.08 0.19 0.53 0.50 90.9
20251005 00:38:26 GMI 37GHz 55.0 15.10 -124.15 15.06 -124.14 0.25 0.70 0.20 ***
20251004 21:58:03 * AMSR2 85-92GHz 55.0 15.08 -124.04 14.99 -123.99 0.11 0.30 0.30 100.0
20251004 21:58:03 AMSR2 37GHz 55.0 14.98 -124.04 14.89 -123.99 0.15 0.41 0.20 ***
20251004 16:45:00 Metop-A ASCAT 54.0 *** *** *** *** *** *** *** ***
20251004 13:08:27 GMI 85-92GHz 50.0 14.53 -123.85 14.47 -123.78 0.15 0.43 0.70 91.2
20251004 13:08:27 * GMI 37GHz 50.0 14.38 -123.80 14.32 -123.73 0.14 0.39 0.20 ***
20251004 09:28:35 * AMSR2 85-92GHz 47.9 14.38 -123.12 14.35 -123.08 0.18 0.50 0.90 100.0
20251004 09:28:35 AMSR2 37GHz 47.9 14.23 -123.17 14.20 -123.13 0.47 1.34 0.20 ***
20251004 05:03:00 * Metop-C ASCAT 45.8 13.88 -122.77 13.95 -122.85 0.19 0.55 *** ***
20251003 21:14:45 AMSR2 85-92GHz 50.0 13.10 -122.73 13.10 -122.68 0.34 0.97 0.40 17.5
20251003 21:14:45 * AMSR2 37GHz 50.0 13.35 -122.06 13.35 -122.01 0.24 0.67 0.70 ***
20251003 17:54:00 Metop-C ASCAT 49.9 *** *** *** *** *** *** *** ***
20251003 13:48:26 GMI 85-92GHz 46.5 *** *** *** *** *** *** 3.00 ***
20251003 13:48:26 GMI 37GHz 46.5 *** *** *** *** *** *** 3.00 ***
20251003 04:33:00 * Metop-A ASCAT 46.2 13.07 -119.87 13.13 -120.04 0.14 0.41 *** ***
20251003 00:28:26 * GMI 85-92GHz 50.0 12.96 -119.24 12.94 -119.19 0.20 0.56 1.20 24.5
20251003 00:28:26 GMI 37GHz 50.0 12.86 -119.24 12.84 -119.19 0.23 0.65 0.80 ***
20251002 17:27:00 * Metop-A ASCAT 50.5 12.63 -118.60 12.65 -118.65 0.15 0.42 *** ***
20251002 17:24:00 * Metop-A ASCAT 50.5 12.63 -118.60 12.65 -118.65 0.15 0.42 *** ***
20251002 05:42:00 Metop-C ASCAT 55.0 12.10 -117.31 12.10 -117.34 0.26 0.72 *** ***
20251002 04:51:00 * Metop-A ASCAT 55.0 12.06 -117.14 12.05 -117.29 0.11 0.31 *** ***
20251001 21:26:21 * AMSR2 85-92GHz 55.0 11.54 -116.70 11.51 -116.66 0.26 0.73 0.30 75.7
20251001 21:26:21 AMSR2 37GHz 55.0 12.04 -116.50 12.01 -116.46 0.37 1.05 0.30 ***
20251001 13:38:27 * GMI 85-92GHz 55.0 11.51 -115.68 11.61 -115.84 0.26 0.74 0.30 43.9
20251001 13:38:27 GMI 37GHz 55.0 11.61 -115.58 11.71 -115.74 0.62 1.76 0.20 ***
20251001 11:28:15 SSMIS-18 85-92GHz 54.6 11.36 -115.49 11.40 -115.56 0.35 0.99 0.30 13.4
20251001 08:58:32 AMSR2 85-92GHz 52.5 11.00 -115.08 11.00 -115.08 0.40 1.14 0.40 22.0
20251001 08:58:32 * AMSR2 37GHz 52.5 11.10 -115.08 11.10 -115.08 0.17 0.49 0.20 ***
20251001 04:21:00 Metop-C ASCAT 47.3 *** *** *** *** *** *** *** ***
20251001 02:37:34 SSMIS-16 85-92GHz 44.4 10.39 -115.09 10.41 -115.12 0.44 1.23 0.30 13.4
20251001 01:48:24 * SSMIS-17 85-92GHz 43.0 10.68 -114.63 10.76 -114.70 0.38 1.07 1.00 8.3
20250930 20:42:52 AMSR2 85-92GHz 40.0 10.68 -114.50 10.71 -114.53 0.44 1.25 1.40 6.0
20250930 20:42:52 * AMSR2 37GHz 40.0 10.43 -114.04 10.46 -114.07 0.43 1.20 0.30 ***
20250930 16:30:00 * Metop-A ASCAT 38.8 9.88 -114.61 9.77 -114.51 0.37 1.06 *** ***
20250930 11:41:26 SSMIS-18 85-92GHz 34.7 *** *** *** *** *** *** 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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