Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20110218T202915 ssmis18 34.5 76.7% 15.4 -15.4 n/a   39.0 kts
20110219T023701 amsre 45.6 100.0% 23.4 -38.4 n/a   47.1 kts
20110219T055606 ssmis17 67.8 NaN% NaN NaN n/a   50.0 kts
20110219T201733 ssmis18 45.6 100.0% 28.3 43.3 >65 kts   58.6 kts
20110220T062049 ssmis16 23.4 100.0% 24.5 39.5 >65 kts   90.9 kts
20110220T081309 ssmis18 12.2 50.7% 10.8 10.8 n/a   95.8 kts
20110220T141206 amsre NaN 41.1% 4.5 4.5 n/a   111.1 kts
20110220T200548 ssmis18 134.5 NaN% NaN NaN n/a   114.0 kts
20110221T022415 amsre 56.7 57.5% 16.1 16.1 n/a   104.3 kts
20110221T082412 ssmis18 45.6 56.2% 11.8 11.8 n/a   98.5 kts
20110221T083207 tmi NaN 42.5% 8.2 8.2 n/a   98.4 kts
20110221T182447 ssmis17 101.2 100.0% 23.7 38.7 >65 kts   95.0 kts
20110222T073717 tmi 123.4 NaN% NaN NaN >65 kts   94.1 kts
20110222T074621 ssmis18 112.3 100.0% 26.2 41.2 >65 kts   93.9 kts
20110222T181327 ssmis17 101.2 69.9% 16.4 16.4 n/a   90.0 kts
20110222T194358 ssmis18 NaN 54.8% 9.1 9.1 n/a   88.9 kts
20110223T020914 amsre 45.6 38.4% 17.7 17.7 n/a   74.8 kts
20110223T064236 ssmis17 212.4 NaN% NaN NaN n/a   70.0 kts
20110223T071833 ssmis18 NaN 12.3% 0.0 0.0 n/a   70.0 kts
20110223T082103 tmi NaN 23.3% 3.9 3.9 n/a   70.0 kts
20110223T130800 amsre NaN 19.2% 1.4 1.4 n/a   64.6 kts
20110223T131520 tmi NaN 8.2% 0.0 0.0 n/a   64.3 kts
20110223T173625 ssmis16 212.4 NaN% NaN NaN n/a   55.5 kts
20110223T193308 ssmis18 NaN 20.6% 1.4 1.4 n/a   53.3 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.