Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20120614T101530 ssmi15 34.5 16.4% 0.3 -0.3 n/a   38.5 kts
20120614T122043 ssmis17 156.8 5.5% 2.5 -2.5 n/a   40.3 kts
20120614T122048 ssmis16 156.8 9.6% 4.7 -4.7 n/a   40.3 kts
20120614T142153 ssmis18 34.5 41.1% 9.2 -9.2 n/a   41.8 kts
20120614T192848 tmi 78.9 NaN% NaN NaN n/a   47.2 kts
20120614T225719 ssmis17 34.5 45.2% 1.2 -1.2 n/a   53.6 kts
20120614T233021 ssmis16 78.9 NaN% NaN NaN n/a   54.4 kts
20120615T095903 ssmi15 101.2 NaN% NaN NaN n/a   63.1 kts
20120615T101809 tmi 112.3 75.3% 16.3 16.3 n/a   63.3 kts
20120615T111211 ssmis16 78.9 100.0% 20.6 35.6 >65 kts   64.2 kts
20120615T120714 ssmis17 78.9 97.3% 19.4 34.4 >65 kts   65.1 kts
20120615T141519 ssmis18 56.7 100.0% 30.4 45.4 >65 kts   68.1 kts
20120616T223452 ssmi15 190.1 0.0% 1.2 -1.2 n/a   20.5 kts
20120617T025650 ssmis18 112.3 0.0% 0.5 -0.5 n/a   20.0 kts
20120617T100440 tmi 190.1 12.3% 2.9 -2.9 n/a   20.0 kts
20120617T110739 ssmi15 190.1 9.6% 4.1 -4.1 n/a   20.0 kts
20120617T152931 ssmis18 101.2 0.0% 1.6 -1.6 n/a   20.0 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.