Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20211107T085829 amsr2_85 310.8 128.4 27.8% 7.8 -7.8 n/a   30.0 kts
20211107T121946 ssmis16_85 77.7 33.9 2.7% 3.2 -3.2 n/a   30.3 kts
20211107T212730 amsr2_85 144.3 61.7 0.0% 4.4 -4.4 n/a   35.0 kts
20211107T233208 ssmis18_85 122.1 56.1 8.2% 3.9 -3.9 n/a   35.0 kts
20211108T023037 ssmis17_85 88.8 45.0 0.0% 3.5 -3.5 n/a   35.0 kts
20211108T094117 amsr2_85 188.7 95.1 12.3% 2.8 -2.8 n/a   35.0 kts
20211108T120537 ssmis16_85 321.9 161.8 NaN% NaN NaN n/a   35.0 kts
20211108T120816 ssmis18_85 288.6 145.1 NaN% NaN NaN 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).