Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20210919T031831 amsr2_85 33.3 100.6 NaN% NaN NaN n/a   30.0 kts
20210919T055244 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20210919T060406 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20210921T070549 ssmis18_85 111.0 50.6 0.0% 0.9 -0.9 n/a   39.1 kts
20210921T071639 ssmis16_85 321.9 156.2 NaN% NaN NaN n/a   38.9 kts
20210921T085429 ssmis17_85 188.7 89.5 0.0% 0.9 -0.9 n/a   37.6 kts
20210921T153655 amsr2_85 310.8 150.7 1.4% 6.1 -6.1 n/a   35.0 kts
20210921T182111 ssmis18_85 288.6 139.5 4.8% 5.2 -5.2 n/a   35.0 kts
20210921T183156 ssmis16_85 255.3 122.9 NaN% NaN NaN n/a   35.0 kts
20210922T065241 ssmis18_85 144.3 67.3 11.0% 1.3 -1.3 n/a   30.0 kts
20210922T070316 ssmis16_85 155.4 72.8 9.6% 3.8 -3.8 n/a   30.0 kts
20210922T162023 amsr2_85 166.5 78.4 0.0% 7.7 -7.7 n/a   30.0 kts
20210923T042849 amsr2_85 11.1 2.5 0.0% 4.2 -4.2 n/a   30.0 kts
20210923T100743 ssmis17_85 310.8 150.7 NaN% NaN NaN n/a   29.4 kts
20210923T212501 ssmis17_85 77.7 33.9 13.7% 6.4 -6.4 n/a   25.0 kts
20210924T095323 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   25.0 kts
20210924T160925 amsr2_85 255.3 122.9 1.6% 3.6 -3.6 n/a   25.0 kts
20210924T211206 ssmis17_85 44.4 17.2 0.0% 0.6 -0.6 n/a   25.0 kts
20210925T041518 amsr2_85 321.9 156.2 NaN% NaN NaN n/a   25.0 kts
20210925T093928 ssmis17_85 33.3 11.7 0.0% 10.1 -10.1 n/a   25.0 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).