Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20110629T123550 ssmis16 NaN 2.7% 5.6 -5.6 n/a   40.5 kts
20110629T141630 ssmis18 NaN 8.2% 2.0 -2.0 n/a   41.9 kts
20110629T213350 tmi NaN 8.2% 4.6 -4.6 n/a   48.0 kts
20110630T001040 ssmis17 NaN 0.0% 0.0 -0.0 n/a   50.2 kts
20110630T040700 tmi 134.5 NaN% NaN NaN n/a   54.2 kts
20110630T124124 ssmis17 23.4 67.1% 12.8 -12.8 n/a   54.8 kts
20110630T194626 amsre NaN 0.0% 0.9 -0.9 n/a   38.4 kts
20110630T203804 tmi NaN 0.0% 3.6 -3.6 n/a   35.6 kts
20110630T235752 ssmis17 212.4 NaN% NaN NaN n/a   32.7 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.