-- Directory of older time series plots --


-- Link to ARCHER Track 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
20250731 22:40:11 SSMIS-16 85-92GHz 20.6 *** *** *** *** *** *** 2.00 ***
20250731 22:20:41 SSMIS-17 85-92GHz 20.7 *** *** *** *** *** *** 4.30 ***
20250731 20:53:44 * SSMIS-18 85-92GHz 21.3 32.17 117.79 32.16 117.81 0.36 1.01 3.60 2.1
20250731 16:23:28 GMI 85-92GHz 23.2 31.84 118.17 31.86 118.10 0.51 1.43 0.20 0.8
20250731 10:14:22 SSMIS-16 85-92GHz 25.7 31.86 119.07 31.89 118.98 0.23 0.66 2.40 6.5
20250731 09:54:55 * SSMIS-17 85-92GHz 25.9 31.75 119.04 31.71 119.16 0.19 0.52 1.30 18.2
20250731 04:51:04 * AMSR2 85-92GHz 28.0 31.84 119.50 31.86 119.44 0.33 0.92 1.00 6.7
20250731 02:53:27 GMI 85-92GHz 28.8 *** *** *** *** *** *** 1.70 ***
20250730 22:54:04 SSMIS-16 85-92GHz 30.6 31.85 119.74 31.88 119.68 0.55 1.55 0.50 1.9
20250730 22:34:42 * SSMIS-17 85-92GHz 30.8 31.79 119.84 31.83 119.74 0.27 0.77 0.30 22.9
20250730 17:50:19 * AMSR2 85-92GHz 33.4 31.47 120.38 31.45 120.42 0.23 0.65 0.20 23.2
20250730 17:08:27 * GMI 85-92GHz 33.8 31.38 120.46 31.40 120.42 0.19 0.53 1.60 31.5
20250730 10:27:45 * SSMIS-16 85-92GHz 36.3 30.23 121.22 30.31 121.15 0.35 0.98 2.60 4.0
20250730 07:01:14 SSMIS-18 85-92GHz 40.0 *** *** *** *** *** *** 1.20 ***
20250730 07:01:13 SSMIS-18 85-92GHz 40.0 *** *** *** *** *** *** 1.70 ***
20250730 07:00:15 SSMIS-18 85-92GHz 40.0 *** *** *** *** *** *** 1.50 ***
20250729 19:41:50 * SSMIS-18 85-92GHz 40.0 29.82 122.61 29.91 122.53 0.38 1.07 0.30 9.4
20250729 17:07:58 * AMSR2 85-92GHz 40.0 28.95 123.66 28.99 123.63 0.58 1.65 1.40 0.5
20250729 07:14:11 * SSMIS-18 85-92GHz 36.0 28.11 124.82 28.21 124.67 0.50 1.42 2.10 1.7
20250729 07:13:52 SSMIS-18 85-92GHz 35.0 28.11 124.87 28.21 124.72 0.52 1.47 2.10 1.8
20250729 05:01:54 AMSR2 85-92GHz 35.0 28.06 124.87 28.10 124.83 0.50 1.43 3.40 3.0
20250729 02:43:27 GMI 85-92GHz 35.0 27.97 124.62 27.95 124.63 0.35 0.99 1.70 7.7
20250728 19:56:01 * SSMIS-18 85-92GHz 35.0 26.79 125.17 26.84 125.14 0.44 1.24 2.40 2.9
20250728 16:53:27 GMI 85-92GHz 34.1 26.92 125.54 26.90 125.37 0.50 1.41 3.40 1.8
20250728 07:27:40 * SSMIS-18 85-92GHz 33.8 26.83 127.54 26.96 127.41 0.49 1.39 0.30 1.0
20250728 04:18:33 AMSR2 85-92GHz 35.0 26.18 128.28 26.27 128.35 0.43 1.22 3.30 2.5
20250727 21:37:44 * SSMIS-17 85-92GHz 35.0 26.97 128.32 27.02 128.52 0.38 1.06 4.00 5.7
20250727 20:10:18 SSMIS-18 85-92GHz 35.0 *** *** *** *** *** *** 4.00 ***
20250727 17:20:38 * AMSR2 85-92GHz 35.5 26.66 128.83 26.66 128.79 0.50 1.41 3.80 2.4
20250727 07:41:51 SSMIS-18 85-92GHz 27.6 *** *** *** *** *** *** 0.40 ***
20250727 07:41:46 SSMIS-18 85-92GHz 32.8 *** *** *** *** *** *** 0.20 ***
20250727 07:40:53 SSMIS-18 85-92GHz 27.6 *** *** *** *** *** *** 0.40 ***
20250726 22:09:03 SSMIS-16 85-92GHz 25.0 *** *** *** *** *** *** 1.00 ***
20250726 21:51:35 SSMIS-17 85-92GHz 25.0 *** *** *** *** *** *** 1.30 ***
20250726 09:40:19 * SSMIS-16 85-92GHz 25.0 26.33 126.67 26.19 126.64 0.42 1.20 1.30 4.3
20250726 09:23:12 * SSMIS-17 85-92GHz 25.0 26.45 126.61 26.34 126.59 0.42 1.20 1.30 3.2
20250726 04:30:43 * AMSR2 85-92GHz 25.0 25.98 126.43 26.11 126.53 0.46 1.30 2.40 3.0
20250725 22:23:35 SSMIS-16 85-92GHz 26.3 *** *** *** *** *** *** 0.90 ***
20250725 22:06:38 SSMIS-17 85-92GHz 26.6 *** *** *** *** *** *** 1.10 ***
20250725 17:33:51 AMSR2 85-92GHz 30.4 23.56 124.78 23.54 124.77 0.34 0.97 5.00 6.7
20250725 17:28:27 * GMI 85-92GHz 30.4 23.54 124.82 23.55 124.83 0.32 0.89 5.00 5.5
20250725 08:08:05 SSMIS-18 85-92GHz 41.4 *** *** *** *** *** *** 1.10 ***
20250725 05:24:04 AMSR2 85-92GHz 45.0 *** *** *** *** *** *** 0.70 ***
20250724 18:08:26 * GMI 85-92GHz 60.0 16.72 120.11 16.66 120.04 0.20 0.57 0.20 76.4
20250724 10:05:02 * SSMIS-16 85-92GHz 66.6 16.10 119.58 16.17 119.63 0.22 0.63 1.00 40.5
20250724 09:48:52 SSMIS-17 85-92GHz 66.8 *** *** *** *** *** *** 0.60 ***
20250724 08:21:27 SSMIS-18 85-92GHz 70.0 16.03 118.96 16.03 118.96 0.19 0.53 0.30 65.2
20250724 08:21:21 * SSMIS-18 85-92GHz 68.0 15.98 118.96 15.99 118.97 0.15 0.43 0.30 83.7
20250724 04:43:26 GMI 85-92GHz 70.0 *** *** *** *** *** *** 5.00 ***
20250723 22:53:08 SSMIS-16 85-92GHz 68.1 16.34 118.33 16.29 118.41 0.24 0.68 0.30 13.8
20250723 22:37:30 SSMIS-17 85-92GHz 67.7 16.36 118.25 16.28 118.36 0.21 0.59 0.30 41.9
20250723 17:48:16 * AMSR2 85-92GHz 59.3 16.67 118.21 16.72 118.22 0.14 0.38 0.30 92.8
20250723 10:19:11 * SSMIS-16 85-92GHz 38.6 17.65 118.95 17.65 118.79 0.19 0.54 0.20 49.7
20250723 05:36:09 AMSR2 85-92GHz 34.7 18.00 119.32 18.00 119.34 0.37 1.04 0.40 30.0
20250723 05:28:27 GMI 85-92GHz 34.6 18.01 119.33 18.01 119.33 0.29 0.82 0.40 40.6
20250722 23:06:16 SSMIS-16 85-92GHz 30.0 19.29 120.36 19.23 120.30 0.35 1.00 1.00 13.6

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: ARCHER Track page

This page automatically updates every 5 minutes