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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
20250804 11:58:26 GMI 85-92GHz 25.0 *** *** *** *** *** *** 2.30 ***
20250804 11:58:26 GMI 37GHz 25.0 *** *** *** *** *** *** 2.40 ***
20250804 09:30:00 * Metop-C ASCAT 26.0 22.49 170.79 22.36 170.94 0.40 1.14 *** ***
20250804 07:34:07 SSMIS-16 85-92GHz 26.8 *** *** *** *** *** *** 3.00 ***
20250803 22:33:26 GMI 85-92GHz 30.0 *** *** *** *** *** *** 0.40 ***
20250803 22:33:26 GMI 37GHz 30.0 *** *** *** *** *** *** 3.00 ***
20250803 21:30:00 Metop-A ASCAT 30.0 *** *** *** *** *** *** *** ***
20250803 18:17:46 * SSMIS-17 85-92GHz 30.0 20.01 172.48 19.91 172.61 0.52 1.47 1.20 1.5
20250803 16:51:40 * SSMIS-18 85-92GHz 30.0 19.82 172.45 19.91 172.35 0.51 1.45 1.50 0.6
20250803 14:11:14 * AMSR2 85-92GHz 30.0 19.85 172.32 19.88 172.27 0.30 0.84 1.30 39.4
20250803 14:11:14 AMSR2 37GHz 30.0 *** *** *** *** *** *** 1.60 ***
20250803 02:00:01 AMSR2 85-92GHz 30.0 18.53 174.63 18.58 174.53 0.54 1.51 1.30 1.4
20250803 02:00:01 * AMSR2 37GHz 30.0 18.68 174.57 18.73 174.48 0.26 0.74 1.60 ***
20250802 21:48:00 * Metop-A ASCAT 30.0 18.24 175.03 18.11 175.29 0.27 0.76 *** ***
20250802 18:32:18 * SSMIS-17 85-92GHz 30.0 18.52 176.37 18.41 176.58 0.43 1.23 3.00 1.8
20250802 13:28:52 AMSR2 85-92GHz 30.0 *** *** *** *** *** *** 0.60 ***
20250802 13:28:52 AMSR2 37GHz 30.0 *** *** *** *** *** *** 0.40 ***
20250802 11:48:27 GMI 85-92GHz 30.0 *** *** *** *** *** *** 3.00 ***
20250802 11:48:27 GMI 37GHz 30.0 *** *** *** *** *** *** 3.00 ***
20250802 09:18:00 * Metop-A ASCAT 30.0 16.10 178.63 16.01 178.82 0.25 0.72 *** ***
20250802 06:18:40 SSMIS-16 85-92GHz 30.0 16.86 179.37 16.83 179.45 0.59 1.66 1.50 1.2
20250802 05:58:09 * SSMIS-17 85-92GHz 30.0 16.77 179.56 16.78 179.55 0.35 0.98 1.30 17.0
20250802 01:16:06 * AMSR2 85-92GHz 30.0 15.88 -179.22 15.75 -178.90 0.57 1.60 0.10 1.1
20250802 01:16:06 AMSR2 37GHz 30.0 *** *** *** *** *** *** 0.50 ***
20250801 19:07:14 SSMIS-16 85-92GHz 35.0 *** *** *** *** *** *** 3.00 ***
20250801 10:58:26 GMI 85-92GHz 35.9 *** *** *** *** *** *** 3.00 ***
20250801 10:58:26 GMI 37GHz 35.9 *** *** *** *** *** *** 3.00 ***
20250801 08:48:00 Metop-C ASCAT 37.7 *** *** *** *** *** *** *** ***
20250801 07:57:00 * Metop-A ASCAT 38.4 13.39 -174.18 13.46 -174.53 0.14 0.39 *** ***
20250801 06:31:37 SSMIS-16 85-92GHz 40.0 13.84 -173.13 13.80 -172.96 0.56 1.59 2.60 0.4
20250801 03:04:22 SSMIS-18 85-92GHz 42.4 13.66 -172.80 13.66 -172.78 0.50 1.40 2.40 2.1
20250801 00:32:30 * AMSR2 85-92GHz 44.5 13.85 -171.87 13.80 -171.70 0.46 1.29 0.20 2.8
20250801 00:32:30 AMSR2 37GHz 44.5 *** *** *** *** *** *** 1.50 ***
20250731 17:20:47 SSMIS-17 85-92GHz 45.0 13.70 -169.44 13.76 -169.65 0.52 1.47 1.00 2.9
20250731 15:54:13 * SSMIS-18 85-92GHz 45.0 13.63 -168.86 13.55 -168.55 0.38 1.07 3.00 0.0
20250731 08:18:00 * Metop-A ASCAT 45.0 12.01 -166.46 12.05 -166.68 0.35 1.00 *** ***
20250731 05:03:19 * SSMIS-16 85-92GHz 45.0 12.18 -165.42 12.25 -165.74 0.22 0.62 0.90 27.5
20250731 04:44:08 SSMIS-17 85-92GHz 45.0 12.26 -165.06 12.35 -165.48 0.36 1.03 1.40 4.8
20250731 03:17:35 SSMIS-18 85-92GHz 44.8 11.76 -165.05 11.74 -164.95 0.39 1.11 1.10 5.2
20250730 22:18:27 GMI 85-92GHz 49.2 11.72 -163.38 11.70 -162.93 0.29 0.83 0.60 7.1
20250730 22:18:27 * GMI 37GHz 49.2 11.67 -163.17 11.65 -162.72 0.17 0.49 0.50 ***
20250730 19:33:00 * Metop-A ASCAT 56.1 11.38 -162.27 11.40 -162.77 0.20 0.56 *** ***
20250730 14:27:16 * SSMIS-18 85-92GHz 65.9 11.68 -160.55 11.70 -160.78 0.29 0.83 0.30 2.9
20250730 10:48:26 GMI 85-92GHz 74.0 11.41 -159.18 11.45 -159.53 0.21 0.59 1.40 3.9
20250730 10:48:26 * GMI 37GHz 74.0 11.36 -159.34 11.40 -159.68 0.15 0.42 0.30 ***
20250730 05:16:32 SSMIS-16 85-92GHz 91.8 11.07 -157.58 11.10 -157.74 0.15 0.44 0.10 21.8
20250730 04:57:52 * SSMIS-17 85-92GHz 92.6 11.16 -157.51 11.20 -157.74 0.14 0.41 0.10 31.3
20250730 01:49:12 SSMIS-18 85-92GHz 100.4 *** *** *** *** *** *** 3.00 ***
20250729 14:41:11 * SSMIS-18 85-92GHz 110.0 10.80 -154.34 10.81 -154.41 0.15 0.42 2.00 5.1
20250729 08:09:00 * Metop-C ASCAT 100.4 10.75 -153.13 10.75 -153.29 0.16 0.45 *** ***
20250729 07:18:00 Metop-A ASCAT 98.3 *** *** *** *** *** *** *** ***
20250729 02:03:45 * SSMIS-18 85-92GHz 78.6 10.72 -152.04 10.70 -152.19 0.11 0.32 0.10 100.0
20250728 23:58:49 AMSR2 85-92GHz 70.0 *** *** *** *** *** *** 0.30 ***
20250728 23:58:49 AMSR2 37GHz 70.0 *** *** *** *** *** *** 3.00 ***
20250728 22:08:27 * GMI 85-92GHz 68.5 10.83 -151.22 10.75 -151.03 0.12 0.34 0.20 100.0
20250728 22:08:27 GMI 37GHz 68.5 10.83 -151.22 10.75 -151.03 0.21 0.59 0.20 ***
20250728 19:21:00 Metop-C ASCAT 66.1 10.79 -150.76 10.75 -150.55 0.16 0.44 *** ***
20250728 16:40:18 * SSMIS-16 85-92GHz 63.9 10.76 -150.21 10.75 -150.41 0.11 0.32 0.30 100.0
20250728 11:33:09 * AMSR2 85-92GHz 58.9 10.75 -149.59 10.74 -149.65 0.10 0.28 0.40 100.0
20250728 11:33:09 AMSR2 37GHz 58.9 10.65 -149.59 10.64 -149.65 0.12 0.35 0.20 ***
20250728 10:38:27 GMI 85-92GHz 56.6 10.68 -149.46 10.63 -149.66 0.16 0.44 0.40 85.1
20250728 10:38:27 GMI 37GHz 56.6 10.63 -149.46 10.58 -149.66 0.14 0.41 0.30 ***
20250728 06:48:00 * Metop-C ASCAT 47.0 10.69 -148.82 10.70 -148.70 0.18 0.51 *** ***
20250728 04:02:40 SSMIS-16 85-92GHz 41.7 10.90 -148.42 10.90 -148.23 0.27 0.77 0.50 55.2
20250728 03:44:44 * SSMIS-17 85-92GHz 41.2 10.90 -148.47 10.90 -148.34 0.26 0.73 0.60 60.1
20250728 02:17:53 SSMIS-18 85-92GHz 38.8 10.90 -148.37 10.90 -148.49 0.35 0.99 0.50 11.2
20250727 23:17:15 * AMSR2 85-92GHz 34.4 11.00 -147.85 11.00 -147.95 0.31 0.87 0.30 60.3
20250727 23:17:15 AMSR2 37GHz 34.4 11.10 -147.64 11.10 -147.75 0.32 0.91 2.10 ***
20250727 19:42:00 * Metop-C ASCAT 31.4 10.88 -147.07 10.85 -147.24 0.14 0.39 *** ***
20250727 13:27:59 * SSMIS-18 85-92GHz 30.0 11.10 -146.05 11.10 -145.83 0.27 0.77 0.40 40.1

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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