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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
20260811 20:30:00   HIMAWARI9 IR 20 29.29 160.02 29.31 160.02 3.36 9.49 0.90 2
20260811 20:30:00 * HIMAWARI9 SWIR 20 28.49 161.32 28.51 161.32 0.41 1.17 0.20 ***
20260811 17:20:00   HIMAWARI9 IR 20 28.32 161.11 28.35 161.10 3.36 9.49 0.10 14
20260811 17:20:00   HIMAWARI9 SWIR 20 27.99 160.54 28.03 160.52 0.84 2.37 0.10 ***
20260811 14:10:00   HIMAWARI9 IR 20 28.04 159.94 28.08 159.92 0.42 1.20 0.10 72
20260811 14:10:00   HIMAWARI9 SWIR 20 28.04 159.94 28.08 159.92 0.60 1.70 0.10 ***
20260811 11:30:00   HIMAWARI9 IR 20 28.14 160.30 28.19 160.28 3.36 9.49 0.30 2
20260811 11:30:00   HIMAWARI9 SWIR 20 28.46 159.75 28.51 159.73 3.36 9.49 0.50 ***
20260811 10:44:54   GMI 37GHz 20 *** *** *** *** 0.25 0.69 0.50 ***
20260811 10:44:54   GMI 89-92GHz 20 30.20 160.70 30.33 160.64 0.37 1.05 0.20 2
20260811 08:30:00   HIMAWARI9 IR 21 27.54 159.98 27.59 159.95 0.38 1.09 1.00 40
20260811 08:30:00 * HIMAWARI9 SWIR 21 27.69 159.86 27.74 159.84 0.33 0.93 1.00 ***
20260811 07:57:50   SSMIS-16 89-92GHz 22 29.19 160.57 29.29 160.53 0.50 1.42 0.30 1
20260811 05:34:59   SSMIS-18 89-92GHz 23 *** *** *** *** 0.43 1.22 0.30 1
20260811 05:30:00   HIMAWARI9 IR 23 27.77 159.04 27.82 159.01 1.33 3.77 0.50 20
20260811 05:30:00   HIMAWARI9 SWIR 23 27.32 159.21 27.37 159.19 0.87 2.46 0.10 ***
20260811 02:30:00   HIMAWARI9 IR 25 27.98 160.35 28.03 160.32 3.36 9.49 0.60 6
20260811 02:30:00   HIMAWARI9 SWIR 25 28.05 160.86 28.10 160.83 3.36 9.49 0.10 ***
20260811 02:22:21   AMSR2 37GHz 25 28.14 160.82 28.20 160.77 0.35 1.00 3.10 ***
20260811 02:22:21   AMSR2 89-92GHz 25 28.69 160.76 28.75 160.72 0.28 0.78 1.00 4
20260811 00:54:54   GMI 37GHz 25 *** *** *** *** 0.61 1.73 1.10 ***
20260811 00:54:54 * GMI 89-92GHz 25 28.51 160.79 28.42 160.85 0.27 0.78 2.60 5
20260810 23:30:00   HIMAWARI9 IR 25 27.83 160.59 27.91 160.64 3.36 9.49 0.50 0
20260810 23:30:00   HIMAWARI9 SWIR 25 27.93 160.62 28.01 160.67 3.36 9.49 0.80 ***
20260810 20:30:00   HIMAWARI9 IR 25 28.55 159.44 28.63 159.49 3.36 9.49 1.00 6
20260810 20:30:00   HIMAWARI9 SWIR 25 28.18 159.47 28.25 159.52 2.44 6.90 0.60 ***
20260810 18:17:59   SSMIS-18 89-92GHz 28 27.88 160.46 27.83 160.43 0.45 1.27 1.40 1
20260810 17:30:00   HIMAWARI9 IR 28 27.51 159.99 27.51 159.96 3.36 9.49 0.60 1
20260810 17:30:00   HIMAWARI9 SWIR 28 27.41 159.88 27.41 159.85 0.47 1.31 0.40 ***
20260810 15:23:29   AMSR2 37GHz 29 27.35 160.09 27.35 160.12 0.51 1.43 0.40 ***
20260810 15:23:29   AMSR2 89-92GHz 29 27.70 160.66 27.70 160.68 0.34 0.96 0.20 3
20260810 14:30:00   HIMAWARI9 IR 30 27.68 158.73 27.68 158.70 3.36 9.49 0.20 1
20260810 14:30:00   HIMAWARI9 SWIR 30 26.48 159.19 26.48 159.15 2.50 7.07 1.00 ***
20260810 11:30:00   HIMAWARI9 IR 33 27.66 162.65 27.70 162.64 3.36 9.49 0.10 2
20260810 11:30:00   HIMAWARI9 SWIR 33 27.44 162.42 27.47 162.41 0.36 1.01 0.10 ***
20260810 11:24:55   GMI 37GHz 33 26.85 160.33 26.89 160.32 0.46 1.31 1.40 ***
20260810 11:24:55   GMI 89-92GHz 33 27.55 160.95 27.59 160.94 0.62 1.75 1.60 0
20260810 08:30:00   HIMAWARI9 IR 35 26.84 162.92 26.87 162.92 3.36 9.49 0.20 4
20260810 08:30:00   HIMAWARI9 SWIR 35 27.51 162.98 27.55 162.97 1.12 3.17 0.10 ***
20260810 08:10:43   SSMIS-16 89-92GHz 27 26.99 159.96 27.04 159.94 0.47 1.32 1.10 2
20260810 05:48:32 * SSMIS-18 89-92GHz 28 27.07 160.67 27.12 160.69 0.29 0.82 0.30 39
20260810 05:30:00   HIMAWARI9 IR 28 24.98 158.63 25.11 158.68 0.50 1.40 1.00 4
20260810 05:30:00   HIMAWARI9 SWIR 28 25.13 158.49 25.26 158.54 0.78 2.22 0.80 ***
20260810 02:30:00   HIMAWARI9 IR 30 27.28 161.38 27.41 161.43 3.36 9.49 0.50 0
20260810 02:30:00 * HIMAWARI9 SWIR 30 26.83 161.10 26.96 161.15 0.87 2.45 0.50 ***

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

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