Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20110827T060938 amsre 34.5 0.0% 2.2 -2.2 n/a   35.0 kts
20110827T170715 amsre 167.9 NaN% NaN NaN n/a   35.0 kts
20110827T193042 tmi 145.7 17.8% 7.5 -7.5 n/a   35.0 kts
20110827T214654 ssmis17 78.9 11.0% 7.5 -7.5 n/a   35.0 kts
20110827T235006 ssmis18 145.7 8.2% 6.2 -6.2 n/a   35.0 kts
20110828T101311 ssmis17 190.1 0.0% 8.1 -8.1 n/a   35.0 kts
20110828T113915 ssmis16 101.2 NaN% NaN NaN n/a   35.0 kts
20110828T121759 ssmis18 156.8 NaN% NaN NaN n/a   35.0 kts
20110828T151912 tmi 23.4 0.0% 3.0 -3.0 n/a   37.9 kts
20110828T165706 tmi 156.8 0.0% 14.9 -14.9 n/a   39.6 kts
20110828T175131 amsre 34.5 9.6% 6.5 -6.5 n/a   40.0 kts
20110828T183456 tmi 67.8 15.1% 6.9 -6.9 n/a   40.0 kts
20110828T213534 ssmis17 101.2 0.0% 5.7 -5.7 n/a   40.0 kts
20110828T233936 ssmis18 112.3 0.0% 8.2 -8.2 n/a   40.0 kts
20110829T055430 amsre 67.8 21.9% 4.7 -4.7 n/a   35.1 kts
20110829T100000 ssmis17 112.3 16.4% 9.5 -9.5 n/a   27.1 kts
20110829T112421 ssmis16 212.4 9.6% 2.8 -2.8 n/a   25.2 kts
20110829T165830 amsre 5.0 0.0% 1.6 -1.6 n/a   24.7 kts
20110829T212507 ssmis17 201.2 0.0% 4.4 -4.4 n/a   22.3 kts
20110829T232930 ssmis18 179.0 NaN% NaN NaN n/a   20.5 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.