Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20241221T182927 amsr2_85 244.2 161.8 NaN% NaN NaN n/a   25.0 kts
20241221T201842 ssmis18_85 244.2 78.4 NaN% NaN NaN n/a   25.0 kts
20241221T223502 ssmis17_85 44.4 NaN 38.4% 0.0 -920.0 n/a   25.0 kts
20241221T225033 ssmis16_85 199.8 NaN 54.8% 0.0 -920.0 n/a   25.0 kts
20241222T200444 ssmis18_85 299.7 145.1 NaN% NaN NaN n/a   30.0 kts
20241222T222100 ssmis17_85 321.9 161.8 NaN% NaN NaN n/a   30.0 kts
20241222T223704 ssmis16_85 210.9 100.6 NaN% NaN NaN n/a   30.0 kts
20241223T060126 amsr2_85 11.1 2.5 0.0% 0.5 -0.5 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).