Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20210924T174948 amsr2_85 177.6 83.9 8.2% 5.5 -5.5 n/a   40.0 kts
20210924T225542 ssmis17_85 88.8 39.5 0.0% 0.1 -0.1 n/a   40.0 kts
20210925T055241 amsr2_85 310.8 6.1 0.0% 4.2 -4.2 n/a   35.1 kts
20210925T060018 gmi_85 188.7 89.5 0.0% 7.3 -7.3 n/a   35.0 kts
20210925T093416 ssmis18_85 22.2 11.7 0.0% 4.3 -4.3 n/a   35.0 kts
20210925T094404 ssmis16_85 33.3 11.7 0.0% 3.4 -3.4 n/a   35.0 kts
20210925T111958 ssmis17_85 277.5 117.3 0.0% 3.6 -3.6 n/a   35.0 kts
20210925T154019 gmi_85 33.3 11.7 NaN% NaN NaN n/a   30.0 kts
20210925T165445 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20210925T224221 ssmis17_85 22.2 6.1 0.0% 1.7 -1.7 n/a   30.0 kts
20210926T063507 amsr2_85 11.1 2.5 0.0% 2.6 -2.6 n/a   30.0 kts
20210926T092045 ssmis18_85 266.4 128.4 NaN% NaN NaN n/a   30.0 kts
20210926T093017 ssmis16_85 11.1 2.5 0.0% 3.1 -3.1 n/a   30.0 kts
20210926T110604 ssmis17_85 210.9 100.6 NaN% NaN NaN n/a   30.0 kts
20210926T145019 gmi_85 22.2 6.1 0.0% 0.0 -0.0 n/a   30.0 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).