-- 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
20260831 14:30:00   HIMAWARI9 IR 30 34.97 167.80 35.08 167.82 3.36 9.49 1.00 1
20260831 14:30:00 * HIMAWARI9 SWIR 30 35.07 167.77 35.18 167.79 1.19 3.37 0.50 ***
20260831 11:30:00 * HIMAWARI9 IR 30 34.41 167.40 34.51 167.42 0.73 2.05 0.50 3
20260831 11:30:00   HIMAWARI9 SWIR 30 34.36 167.46 34.46 167.48 0.75 2.12 0.60 ***
20260831 08:30:00   HIMAWARI9 IR 30 34.13 167.29 34.24 167.30 3.36 9.49 0.50 1
20260831 08:30:00   HIMAWARI9 SWIR 30 34.18 167.35 34.29 167.36 1.21 3.42 0.30 ***
20260831 05:30:00   HIMAWARI9 IR 30 33.78 167.70 33.87 167.73 3.36 9.49 0.30 3
20260831 05:30:00   HIMAWARI9 SWIR 30 34.11 168.48 34.19 168.51 1.57 4.44 0.90 ***
20260831 04:40:44   GMI 37GHz 30 *** *** *** *** 0.50 1.41 1.60 ***
20260831 04:40:44 * GMI 89-92GHz 30 33.71 168.01 33.93 168.10 0.57 1.62 0.90 0
20260831 04:12:36 * SSMIS-18 89-92GHz 30 33.53 167.74 33.33 167.66 0.24 0.67 1.20 5
20260831 02:30:00   HIMAWARI9 IR 30 33.24 167.57 33.32 167.61 3.36 9.49 1.00 1
20260831 02:30:00   HIMAWARI9 SWIR 30 33.19 169.75 33.27 169.79 1.88 5.31 0.80 ***
20260831 01:58:24   AMSR2 37GHz 30 33.00 167.36 33.17 167.43 0.48 1.37 0.80 ***
20260831 01:58:24   AMSR2 89-92GHz 30 33.00 167.42 33.17 167.49 0.43 1.21 0.10 1
20260830 23:30:00   HIMAWARI9 IR 30 33.46 169.31 33.54 169.35 1.41 3.97 0.70 12
20260830 23:30:00   HIMAWARI9 SWIR 30 32.51 167.12 32.59 167.15 3.36 9.49 0.20 ***
20260830 20:30:00   HIMAWARI9 IR 30 31.96 167.38 32.05 167.41 3.36 9.49 0.20 8
20260830 20:30:00   HIMAWARI9 SWIR 30 32.04 166.85 32.12 166.88 3.36 9.49 0.20 ***
20260830 19:08:41 * SSMIS-17 89-92GHz 30 31.92 166.88 31.73 166.81 0.25 0.70 0.90 13
20260830 18:50:44   GMI 37GHz 30 31.39 166.25 31.25 166.19 0.30 0.84 2.00 ***
20260830 18:50:44   GMI 89-92GHz 30 31.69 166.84 31.55 166.78 0.33 0.94 0.90 8
20260830 17:30:00   HIMAWARI9 IR 30 32.62 164.51 32.67 164.58 2.76 7.81 0.80 6
20260830 17:30:00   HIMAWARI9 SWIR 30 32.42 168.68 32.47 168.75 0.41 1.16 0.70 ***
20260830 14:57:44   AMSR2 37GHz 30 31.40 166.00 31.40 166.01 0.34 0.96 0.50 ***
20260830 14:57:44 * AMSR2 89-92GHz 30 31.35 166.24 31.35 166.24 0.23 0.66 0.90 12
20260830 14:30:00   HIMAWARI9 IR 30 31.60 163.94 31.65 164.01 3.36 9.49 0.80 5
20260830 14:30:00   HIMAWARI9 SWIR 30 31.60 163.94 31.65 164.01 1.19 3.37 0.80 ***
20260830 11:30:00   HIMAWARI9 IR 30 30.32 166.48 30.34 166.54 3.36 9.49 0.80 3
20260830 11:30:00   HIMAWARI9 SWIR 30 30.39 165.29 30.42 165.35 0.65 1.83 0.90 ***
20260830 08:30:00   HIMAWARI9 IR 30 30.69 165.35 30.72 165.41 0.63 1.78 0.10 74
20260830 08:30:00   HIMAWARI9 SWIR 30 30.62 165.38 30.64 165.44 0.68 1.93 0.20 ***
20260830 05:30:00   HIMAWARI9 IR 25 30.94 165.50 30.93 165.55 3.36 9.49 0.60 24
20260830 05:30:00   HIMAWARI9 SWIR 25 31.32 165.29 31.31 165.34 3.36 9.49 0.90 ***
20260830 05:20:45 * GMI 37GHz 25 30.66 165.23 30.65 165.30 0.25 0.70 0.10 ***
20260830 05:20:45   GMI 89-92GHz 25 30.86 165.12 30.85 165.18 0.36 1.01 3.10 1
20260830 04:26:25 * SSMIS-18 89-92GHz 25 30.87 165.11 30.90 164.97 0.21 0.60 0.20 8
20260830 02:30:00   HIMAWARI9 IR 25 30.74 165.23 30.74 165.28 1.29 3.64 0.50 24
20260830 02:30:00   HIMAWARI9 SWIR 25 30.97 165.11 30.96 165.16 1.20 3.40 0.10 ***
20260829 23:30:00   HIMAWARI9 IR 35 30.70 164.92 30.72 164.90 3.36 9.49 0.30 11
20260829 23:30:00   HIMAWARI9 SWIR 35 30.98 164.86 31.00 164.85 0.58 1.65 0.20 ***
20260829 20:30:00   HIMAWARI9 IR 35 30.72 164.67 30.73 164.65 3.36 9.49 0.20 0
20260829 20:30:00   HIMAWARI9 SWIR 35 30.69 164.67 30.71 164.65 0.75 2.13 0.20 ***
20260829 19:35:45   GMI 37GHz 40 30.80 164.82 30.85 164.78 0.50 1.41 1.40 ***
20260829 19:35:45 * GMI 89-92GHz 40 30.95 165.06 31.00 165.01 0.36 1.00 1.60 8
20260829 17:30:00   HIMAWARI9 IR 40 29.79 164.13 29.85 164.09 3.36 9.49 0.60 5
20260829 17:30:00   HIMAWARI9 SWIR 40 30.36 164.45 30.42 164.41 3.36 9.49 0.20 ***
20260829 14:20:00   HIMAWARI9 IR 40 29.10 164.65 29.18 164.59 3.36 9.49 0.60 1
20260829 14:20:00   HIMAWARI9 SWIR 40 29.45 164.88 29.53 164.82 3.36 9.49 0.20 ***
20260829 14:15:12   AMSR2 37GHz 40 *** *** *** *** 0.45 1.27 5.00 ***
20260829 14:15:12   AMSR2 89-92GHz 40 *** *** *** *** 0.31 0.87 5.00 0
20260829 11:30:00   HIMAWARI9 IR 40 28.44 163.38 28.59 163.36 0.98 2.78 0.50 1
20260829 11:30:00   HIMAWARI9 SWIR 40 28.44 163.38 28.59 163.36 0.62 1.76 0.40 ***
20260829 08:30:00   HIMAWARI9 IR 40 28.57 163.37 28.72 163.34 3.36 9.49 0.30 1
20260829 08:30:00   HIMAWARI9 SWIR 40 27.95 163.48 28.10 163.45 1.39 3.93 0.60 ***
20260829 06:56:29   SSMIS-17 89-92GHz 35 27.61 165.38 27.32 165.43 0.50 1.40 1.80 1
20260829 06:05:44   GMI 37GHz 40 *** *** *** *** 0.19 0.55 1.90 ***
20260829 06:05:44   GMI 89-92GHz 40 *** *** *** *** 0.43 1.22 5.00 0
20260829 05:30:00   HIMAWARI9 IR 35 27.22 166.50 27.37 166.49 3.36 9.49 1.00 13
20260829 05:30:00   HIMAWARI9 SWIR 35 27.09 165.07 27.24 165.06 1.52 4.29 0.70 ***
20260829 04:39:35 * SSMIS-18 89-92GHz 35 27.29 165.51 27.69 165.48 0.45 1.28 1.80 3
20260829 02:30:00   HIMAWARI9 IR 35 26.51 163.42 26.66 163.41 1.82 5.16 1.00 1
20260829 02:30:00   HIMAWARI9 SWIR 35 26.78 165.63 26.93 165.62 3.36 9.49 0.40 ***
20260829 02:09:05   AMSR2 37GHz 35 26.74 165.32 26.99 165.31 0.33 0.92 2.80 ***
20260829 02:09:05   AMSR2 89-92GHz 35 26.84 165.82 27.09 165.81 0.31 0.89 2.40 7
20260828 23:30:00   HIMAWARI9 IR 35 26.07 165.26 26.09 165.25 3.36 9.49 0.90 1
20260828 23:30:00   HIMAWARI9 SWIR 35 26.12 165.38 26.14 165.36 1.88 5.32 1.00 ***
20260828 20:30:00   HIMAWARI9 IR 40 25.84 164.13 25.85 164.11 3.36 9.49 0.30 0
20260828 20:30:00   HIMAWARI9 SWIR 40 25.29 164.57 25.30 164.56 2.19 6.18 0.40 ***
20260828 19:39:07 * SSMIS-17 89-92GHz 45 26.02 165.66 26.07 165.62 0.27 0.78 0.20 5
20260828 17:30:00   HIMAWARI9 IR 45 26.54 163.85 26.62 163.81 3.36 9.49 0.30 3
20260828 17:30:00   HIMAWARI9 SWIR 45 25.26 164.05 25.35 164.01 1.02 2.87 1.00 ***
20260828 15:11:41   AMSR2 37GHz 45 25.28 166.06 25.25 166.08 0.49 1.39 3.00 ***
20260828 15:11:41 * AMSR2 89-92GHz 45 26.58 165.62 26.55 165.64 0.40 1.12 2.10 8
20260828 14:00:00   HIMAWARI9 IR 45 25.17 164.89 25.33 164.81 3.36 9.49 0.80 0
20260828 14:00:00   HIMAWARI9 SWIR 45 24.97 165.78 25.13 165.70 3.36 9.49 0.80 ***
20260828 11:30:00   HIMAWARI9 IR 49 25.07 165.42 25.14 165.39 2.48 7.00 0.90 1
20260828 11:30:00   HIMAWARI9 SWIR 49 24.62 165.56 24.69 165.53 1.73 4.88 0.70 ***
20260828 08:00:00   HIMAWARI9 IR 48 24.78 165.02 24.91 164.96 3.36 9.49 0.40 0
20260828 08:00:00   HIMAWARI9 SWIR 48 24.73 165.87 24.86 165.81 3.36 9.49 0.10 ***
20260828 07:23:06   SSMIS-16 89-92GHz 48 24.55 167.03 24.36 167.12 0.46 1.31 2.50 2
20260828 05:30:00   HIMAWARI9 IR 47 24.46 165.18 24.53 165.15 3.36 9.49 0.40 0
20260828 05:30:00   HIMAWARI9 SWIR 47 23.49 165.38 23.55 165.34 2.02 5.72 0.10 ***
20260828 04:52:24   SSMIS-18 89-92GHz 47 24.49 167.00 24.64 166.93 0.40 1.14 2.20 3
20260828 02:30:00   HIMAWARI9 IR 46 24.61 168.59 24.68 168.56 3.36 9.49 0.10 4
20260828 02:30:00   HIMAWARI9 SWIR 46 24.56 168.59 24.63 168.56 1.40 3.95 0.10 ***
20260827 23:30:00   HIMAWARI9 IR 44 24.38 168.95 24.45 168.92 3.36 9.49 0.10 7
20260827 23:30:00   HIMAWARI9 SWIR 44 24.06 168.71 24.12 168.68 3.36 9.49 0.10 ***
20260827 20:30:00   HIMAWARI9 IR 43 23.58 165.63 23.65 165.60 1.32 3.74 0.90 3
20260827 20:30:00   HIMAWARI9 SWIR 43 23.81 169.00 23.87 168.97 0.70 1.98 0.30 ***
20260827 19:20:44   GMI 37GHz 42 22.87 167.11 22.69 167.19 0.47 1.32 2.80 ***
20260827 19:20:44   GMI 89-92GHz 42 *** *** *** *** 0.45 1.26 3.10 7
20260827 17:38:23 * SSMIS-18 89-92GHz 41 22.02 166.57 22.07 166.55 0.40 1.14 1.80 1
20260827 17:10:00   HIMAWARI9 IR 41 22.66 168.71 22.77 168.66 3.36 9.49 0.10 4
20260827 17:10:00   HIMAWARI9 SWIR 41 22.43 168.77 22.54 168.72 0.81 2.28 0.10 ***
20260827 14:30:00   HIMAWARI9 IR 40 22.34 168.03 22.40 168.00 3.36 9.49 0.10 1
20260827 14:30:00   HIMAWARI9 SWIR 40 22.34 168.19 22.40 168.16 1.46 4.13 0.20 ***
20260827 14:29:42 * AMSR2 37GHz 40 21.98 166.84 22.05 166.81 0.30 0.84 2.30 ***
20260827 14:29:42   AMSR2 89-92GHz 40 22.28 168.24 22.35 168.21 0.50 1.41 0.20 4
20260827 11:30:00   HIMAWARI9 IR 41 21.80 168.07 21.87 168.07 0.58 1.64 0.10 15
20260827 11:30:00   HIMAWARI9 SWIR 41 21.93 167.99 21.99 167.99 1.18 3.35 0.20 ***
20260827 08:00:00   HIMAWARI9 IR 40 21.48 168.27 21.62 168.27 3.36 9.49 0.10 3
20260827 08:00:00   HIMAWARI9 SWIR 40 21.56 170.10 21.69 170.10 0.46 1.31 0.10 ***
20260827 05:20:00   HIMAWARI9 IR 32 21.43 168.22 21.52 168.26 2.55 7.22 0.70 7
20260827 05:20:00   HIMAWARI9 SWIR 32 21.18 168.01 21.27 168.04 0.74 2.08 0.10 ***
20260827 05:06:01 * SSMIS-18 89-92GHz 32 20.73 167.78 20.85 167.82 0.27 0.75 0.50 21
20260827 02:30:00   HIMAWARI9 IR 30 21.13 168.48 21.20 168.50 3.36 9.49 0.10 6
20260827 02:30:00 * HIMAWARI9 SWIR 30 22.33 169.07 22.40 169.09 0.49 1.37 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: ARCHER Track page

This page automatically updates every 5 minutes