Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20110924T055609 amsre 156.8 9.6% 3.7 -3.7 n/a   30.0 kts
20110924T180921 amsre 5.0 0.0% 2.4 -2.4 n/a   30.0 kts
20110924T185747 tmi 323.5 NaN% NaN NaN n/a   30.0 kts
20110924T225740 ssmis16 201.2 0.0% 1.9 -1.9 n/a   30.0 kts
20110925T091751 ssmis16 323.5 NaN% NaN NaN n/a   35.0 kts
20110925T102528 ssmis17 323.5 NaN% NaN NaN n/a   35.0 kts
20110925T122457 ssmis18 323.5 NaN% NaN NaN n/a   35.0 kts
20110925T224330 ssmis16 234.6 NaN% NaN NaN n/a   35.0 kts
20110926T012332 ssmis18 245.7 9.6% 0.2 -0.2 n/a   34.3 kts
20110926T054432 amsre 323.5 NaN% NaN NaN n/a   30.0 kts
20110926T095500 ssmis17 223.5 17.8% 2.1 -2.1 n/a   30.0 kts
20110926T103139 tmi 234.6 NaN% NaN NaN n/a   30.0 kts
20110926T123319 ssmis18 134.5 21.9% 1.9 -1.9 n/a   29.9 kts
20110926T184314 tmi 212.4 12.3% 5.4 -5.4 n/a   25.0 kts
20110926T224737 ssmis17 134.5 5.5% 0.0 -0.0 n/a   24.6 kts
20110927T011137 ssmis18 145.7 NaN% NaN NaN n/a   23.3 kts
20110927T062715 amsre 256.8 NaN% NaN NaN n/a   19.8 kts
20110927T093458 tmi 134.5 4.1% 0.8 -0.8 n/a   18.3 kts
20110927T112555 ssmis16 323.5 NaN% NaN NaN n/a   17.5 kts
20110927T184003 amsre 323.5 NaN% NaN NaN 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.