Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20111108T014211 ssmis17 134.5 17.8% 1.4 -1.4 n/a   35.0 kts
20111108T042122 ssmis18 167.9 NaN% NaN NaN n/a   35.0 kts
20111108T142125 ssmis16 12.2 39.7% 6.0 -6.0 n/a   35.0 kts
20111108T152220 ssmis18 34.5 26.0% 0.0 -0.0 n/a   35.0 kts
20111109T003611 tmi 101.2 7.9% 4.7 -4.7 n/a   30.1 kts
20111109T012900 ssmis17 123.4 27.4% 2.4 -2.4 n/a   30.8 kts
20111109T025712 ssmis16 167.9 NaN% NaN NaN n/a   32.4 kts
20111109T042315 ssmis18 34.5 35.6% 0.0 -0.0 n/a   34.1 kts
20111109T140858 ssmis16 34.5 0.0% 7.5 -7.5 n/a   30.0 kts
20111109T152822 tmi 212.4 NaN% NaN NaN n/a   30.0 kts
20111109T153542 ssmis18 212.4 NaN% NaN NaN n/a   30.0 kts
20111109T234019 tmi 201.2 0.0% 7.7 -7.7 n/a   25.3 kts
20111110T024415 ssmis16 212.4 9.6% 5.0 -5.0 n/a   25.0 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.