Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20101212T125422 ssmis18 NaN 65.8% 0.0 -0.0 n/a   25.0 kts
20101212T175921 amsre NaN 0.0% 0.0 -0.0 n/a   25.0 kts
20101213T062624 amsre NaN 0.0% 5.1 -5.1 n/a   20.0 kts
20101213T102255 ssmis17 NaN 0.0% 3.2 -3.2 n/a   19.7 kts
20101213T104616 tmi NaN 0.0% 4.8 -4.8 n/a   19.5 kts
20101213T113448 ssmis16 NaN 0.0% 4.1 -4.1 n/a   19.0 kts
20101213T122323 ssmis18 NaN 0.0% 2.7 -2.7 n/a   18.4 kts
20101213T184212 amsre NaN 52.0% 3.3 -3.3 n/a   15.0 kts
20101213T203728 tmi NaN 26.0% 1.5 -1.5 n/a   15.0 kts
20101214T010358 ssmis18 NaN 0.0% 0.0 -0.0 n/a   15.0 kts
20101214T101022 ssmis17 NaN 39.7% 0.0 -0.0 n/a   15.0 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.