2025_01E

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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

20250601 04:48:00 *

Metop-C

ASCAT

25.5

22.24

-109.50

22.35

-109.50

0.14

0.39

***

20250601 03:57:00

Metop-A

ASCAT

25.9

***

20250531 20:09:42 *	AMSR2	85-92GHz	29.1	21.04	-109.71	21.12	-109.71	0.24	0.68	1.80	3.0
20250531 20:09:42	AMSR2	37GHz	29.1	20.99	-109.93	21.07	-109.93	0.38	1.06	1.20	***

20250531 17:36:00	Metop-C	ASCAT	30.2	***	***	***	***	***	***	***	***
20250531 16:45:00	Metop-A	ASCAT	30.7	***	***	***	***	***	***	***	***

20250531 13:10:52 *	SSMIS-17	85-92GHz	32.7	20.93	-109.37	20.78	-109.34	0.38	1.08	0.70	1.5
20250531 11:32:32	SSMIS-18	85-92GHz	33.6	20.37	-109.64	20.43	-109.66	0.38	1.09	2.50	0.8

20250531 09:15:04	AMSR2	85-92GHz	34.9	20.23	-109.41	20.20	-109.41	0.27	0.76	0.20	5.2
20250531 09:15:04 *	AMSR2	37GHz	34.9	19.88	-109.52	19.85	-109.51	0.18	0.51	1.10	***

20250531 05:09:00

Metop-C

ASCAT

35.7

19.78

-109.49

19.90

-109.52

0.52

1.48

***

20250531 01:13:26	GMI	85-92GHz	39.0	18.84	-109.03	18.65	-109.00	0.22	0.63	1.50	7.6
20250531 01:13:26 *	GMI	37GHz	39.0	18.74	-108.98	18.55	-108.95	0.17	0.49	0.60	***
20250531 00:38:34	SSMIS-17	85-92GHz	40.0	***	***	***	***	***	***	2.10	***
20250530 22:59:48	SSMIS-18	85-92GHz	40.8	18.64	-108.66	18.81	-108.68	0.35	1.00	1.80	3.2

20250530 21:04:04	AMSR2	85-92GHz	42.4	19.06	-108.74	19.04	-108.74	0.40	1.13	3.00	0.0
20250530 21:04:04 *	AMSR2	37GHz	42.4	18.26	-108.79	18.24	-108.79	0.19	0.54	0.40	***

20250530 17:06:00

Metop-A

ASCAT

45.0

***

20250530 16:18:00

Metop-C

ASCAT

45.0

***

20250530 11:48:26	GMI	85-92GHz	45.0	16.97	-108.32	17.00	-108.34	0.21	0.59	1.50	55.5
20250530 11:48:26 *	GMI	37GHz	45.0	16.77	-108.59	16.80	-108.60	0.09	0.25	1.00	***

20250530 08:33:04	AMSR2	85-92GHz	45.0	16.49	-108.01	16.55	-108.05	0.38	1.07	1.50	8.0
20250530 08:33:04 *	AMSR2	37GHz	45.0	16.24	-108.38	16.30	-108.42	0.12	0.35	0.90	***

20250530 04:39:00

Metop-A

ASCAT

46.1

15.81

-108.00

15.95

-108.11

0.19

0.54

***

20250530 00:51:51 *

SSMIS-17

85-92GHz

50.0

15.12

-107.64

15.02

-107.56

0.17

0.49

2.10

31.9

20250529 20:20:03	AMSR2	85-92GHz	46.9	15.16	-107.38	15.28	-107.48	0.48	1.34	1.20	4.2
20250529 20:20:03 *	AMSR2	37GHz	46.9	14.91	-107.43	15.03	-107.53	0.11	0.32	1.20	***

20250529 15:48:00 *

Metop-A

ASCAT

39.5

14.32

-106.74

14.16

-106.62

0.18

0.50

***

20250529 12:33:27 *	GMI	85-92GHz	30.9	14.45	-106.82	14.38	-106.77	0.36	1.02	3.00	0.0
20250529 12:33:27	GMI	37GHz	30.9	14.45	-106.82	14.38	-106.77	0.42	1.17	3.00	***

20250529 04:09:00 *

Metop-C

ASCAT

30.0

12.62

-105.73

12.51

-105.49

0.22

0.63

***

20250529 01:03:27 *	GMI	85-92GHz	30.0	12.75	-104.38	12.63	-104.27	0.39	1.11	0.40	5.4
20250529 01:03:27	GMI	37GHz	30.0	***	***	***	***	***	***	0.70	***

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.

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