Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20210919T045548 amsr2_85 166.5 11.7 0.0% 1.9 -1.9 n/a   34.1 kts
20210919T062519 gmi_85 266.4 156.2 NaN% NaN NaN n/a   35.0 kts
20210921T062036 amsr2_85 177.6 83.9 0.0% 5.6 -5.6 n/a   35.0 kts
20210921T084724 ssmis18_85 99.9 45.0 0.0% 3.7 -3.7 n/a   35.0 kts
20210921T085816 ssmis16_85 22.2 6.1 0.0% 0.7 -0.7 n/a   35.0 kts
20210921T103604 ssmis17_85 22.2 6.1 0.0% 2.9 -2.9 n/a   35.0 kts
20210921T171602 amsr2_85 233.1 111.7 11.1% 7.0 -7.0 n/a   35.0 kts
20210921T200142 ssmis18_85 321.9 156.2 NaN% NaN NaN n/a   35.0 kts
20210921T201345 ssmis16_85 266.4 128.4 NaN% NaN NaN n/a   35.0 kts
20210922T083422 ssmis18_85 111.0 50.6 NaN% NaN NaN n/a   35.0 kts
20210922T084458 ssmis16_85 111.0 50.6 NaN% NaN NaN n/a   35.0 kts
20210922T175934 amsr2_85 210.9 100.6 NaN% NaN NaN n/a   35.0 kts
20210923T060725 amsr2_85 55.5 22.8 0.0% 1.1 -1.1 n/a   35.0 kts
20210923T114920 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   35.0 kts
20210923T230704 ssmis17_85 66.6 28.4 0.0% 8.1 -8.1 n/a   35.0 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).