Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20100823T001619 ssmis18 -919.0 -999.0% -999.0 -909.0 n/a   35.2 kts
20100823T044024 tmi NaN 15.1% 1.8 -1.8 n/a   38.7 kts
20100823T062818 amsre NaN 65.8% 0.2 -0.2 n/a   40.6 kts
20100823T092230 ssmi15 NaN 45.2% 1.0 -1.0 n/a   45.7 kts
20100823T103112 ssmis17 NaN 64.4% 0.0 -0.0 n/a   47.8 kts
20100823T113758 ssmis16 NaN 54.8% 0.0 -0.0 n/a   49.6 kts
20100823T131018 ssmis18 NaN 0.0% 0.0 -0.0 n/a   51.2 kts
20100823T184044 amsre 56.7 49.3% 21.6 21.6 >65 kts   55.6 kts
20100823T215530 ssmi15 NaN 28.8% 0.5 0.5 n/a   59.0 kts
20100824T001237 ssmis16 67.8 100.0% 34.1 49.1 >65 kts   60.0 kts
20100824T094154 ssmis17 34.5 100.0% 27.6 42.6 >65 kts   44.2 kts
20100824T112618 ssmis16 NaN 31.5% 0.8 0.8 n/a   40.3 kts
20100824T125859 ssmis18 NaN 0.0% 0.0 -0.0 n/a   40.0 kts
20100824T201155 tmi NaN 0.0% 4.2 -4.2 n/a   35.1 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.