Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20211010T072800 ssmis18_85 144.3 61.7 8.2% 3.9 -3.9 n/a   37.4 kts
20211010T073402 ssmis16_85 122.1 56.1 9.6% 3.3 -3.3 n/a   37.6 kts
20211010T200151 ssmis18_85 177.6 145.1 NaN% NaN NaN n/a   46.7 kts
20211010T200757 ssmis16_85 210.9 150.7 NaN% NaN NaN n/a   46.8 kts
20211010T230018 gmi_85 177.6 150.7 NaN% NaN NaN n/a   49.2 kts
20211011T103202 ssmis17_85 122.1 56.1 NaN% NaN NaN n/a   53.8 kts
20211011T121518 gmi_85 33.3 72.8 27.1% 2.0 -2.0 n/a   55.0 kts
20211011T230527 ssmis17_85 111.0 50.6 0.0% 1.8 1.8 n/a   55.0 kts
20211012T060120 amsr2_85 66.6 28.4 NaN% NaN NaN n/a   55.0 kts
20211012T084412 ssmis18_85 299.7 139.5 NaN% NaN NaN n/a   55.0 kts
20211012T084943 ssmis16_85 288.6 139.5 NaN% NaN NaN n/a   55.0 kts
20211012T101855 ssmis17_85 177.6 156.2 NaN% NaN NaN n/a   55.0 kts
20211012T181230 amsr2_85 22.2 6.1 89.0% 0.0 15.0 n/a   55.0 kts
20211012T211721 ssmis18_85 144.3 67.3 37.0% 2.3 2.3 n/a   55.0 kts
20211012T212312 ssmis16_85 144.3 67.3 26.0% 1.9 1.9 n/a   55.0 kts
20211012T225018 gmi_85 144.3 67.3 35.6% 0.7 0.7 n/a   55.0 kts
20211012T225214 ssmis17_85 244.2 95.1 25.4% 3.0 3.0 n/a   55.0 kts
20211013T083145 ssmis18_85 111.0 50.6 NaN% NaN NaN n/a   55.0 kts
20211013T083708 ssmis16_85 210.9 100.6 NaN% NaN NaN n/a   55.0 kts
20211013T120519 gmi_85 55.5 161.8 NaN% NaN NaN n/a   51.6 kts

Key:

Diameter values indicate the estimated surface eyewall diameter (the MI eyewall edge diameter minus 10 km).

Diameter values are red if Ring % <= 65, yellow/brown if Ring % <= 85 and green if Ring % > 85.

"Ring %" is the percentage of the "ring" (eyewall inner boundary) that is 1) colder than the "hot spot" (warmest eye pixel) in the eye by 20K, or 2) the percentage that is a) colder than 232K and b) colder than the "hot spot" by 10K, whichever is greater.

"Tb diff" is the difference between the "hot spot" (warmest eye pixel) and the warmest pixel on the eyewall.

Scores are listed as negative, and not used, when the JTWC or NHC estimated Vmax is <50 kts in order to rule out weak but highly symmetric TCs.

Error messages in intensity scores: -920 is used when the hottest pixel in the eye is <200K, to prevent false positives; -909 is a failure to process (bad input data).