Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20240911T133107 ssmis16_85 255.3 139.5 NaN% NaN NaN n/a   30.0 kts
20240912T085601 amsr2_85 321.9 156.2 NaN% NaN NaN n/a   30.0 kts
20240912T144855 gmi_85 166.5 72.8 11.0% 3.1 -3.1 n/a   32.3 kts
20240913T041355 gmi_85 22.2 6.1 0.0% 0.5 -0.5 n/a   40.0 kts
20240913T203331 amsr2_85 88.8 33.9 25.4% 1.7 -1.7 n/a   37.9 kts
20240914T084225 amsr2_85 144.3 67.3 17.9% 1.0 -1.0 n/a   35.0 kts
20240915T141855 gmi_85 188.7 89.5 NaN% NaN NaN n/a   27.0 kts
20240916T034355 gmi_85 133.2 61.7 0.0% 7.2 -7.2 n/a   20.9 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).