-- 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
20260813 15:23:53   AMSR2 37GHz 26 *** *** *** *** 0.30 0.85 0.30 ***
20260813 15:23:53 * AMSR2 89-92GHz 26 39.67 -36.81 39.60 -36.90 0.32 0.91 1.40 4
20260813 09:42:45   SSMIS-16 89-92GHz 29 38.67 -37.67 38.55 -37.82 0.25 0.71 3.70 5
20260813 07:19:33   SSMIS-18 89-92GHz 32 38.21 -38.52 37.99 -38.79 0.30 0.84 2.20 3
20260813 04:19:45   AMSR2 37GHz 34 37.81 -39.51 37.63 -39.82 0.26 0.73 2.80 ***
20260813 04:19:45 * AMSR2 89-92GHz 34 37.86 -39.20 37.68 -39.51 0.22 0.62 0.60 7
20260813 02:50:21   GOES19 IR 36 38.97 -41.20 38.99 -41.16 1.52 4.29 0.70 2
20260813 02:50:21   GOES19 SWIR 36 37.32 -39.91 37.34 -39.87 3.36 9.49 0.70 ***
20260812 23:59:54   GMI 37GHz 38 37.06 -40.37 37.06 -40.37 0.28 0.79 2.60 ***
20260812 23:59:54   GMI 89-92GHz 38 37.26 -40.05 37.26 -40.05 0.22 0.63 1.30 7
20260812 23:50:21   GOES19 IR 38 36.85 -40.70 36.86 -40.65 3.36 9.49 0.90 1
20260812 23:50:21   GOES19 SWIR 38 37.05 -40.60 37.06 -40.56 0.45 1.28 1.00 ***
20260812 21:20:43   SSMIS-16 89-92GHz 39 37.23 -40.47 37.20 -40.56 0.24 0.67 0.40 7
20260812 20:50:21   GOES19 IR 36 36.94 -41.55 36.95 -41.51 0.43 1.22 0.80 3
20260812 20:50:21   GOES19 SWIR 36 36.89 -41.33 36.90 -41.29 0.35 1.00 1.00 ***
20260812 19:34:23   SSMIS-17 89-92GHz 37 36.61 -41.23 36.71 -40.85 0.40 1.14 2.00 2
20260812 18:57:42   SSMIS-18 89-92GHz 37 36.91 -41.68 36.84 -41.94 0.26 0.74 2.10 6
20260812 17:50:21   GOES19 IR 38 36.66 -42.73 36.67 -42.68 3.36 9.49 1.00 0
20260812 17:50:21   GOES19 SWIR 38 36.76 -42.48 36.77 -42.43 3.36 9.49 0.50 ***
20260812 16:18:35   AMSR2 37GHz 39 *** *** *** *** 0.37 1.05 2.30 ***
20260812 16:18:35 * AMSR2 89-92GHz 39 36.73 -42.28 36.70 -42.74 0.20 0.57 2.00 25
20260812 14:50:21   GOES19 IR 40 37.20 -44.70 37.20 -44.65 3.36 9.49 0.70 0
20260812 14:50:21   GOES19 SWIR 40 36.25 -44.05 36.25 -43.99 3.36 9.49 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