Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20121124T101141 tmi 23.4 100.0% 41.7 -56.7 n/a   50.0 kts
20121124T103943 ssmi15 23.4 100.0% 31.6 -46.6 n/a   50.5 kts
20121125T004502 ssmis16 12.2 NaN% NaN NaN n/a   55.0 kts
20121125T005006 ssmis17 23.4 69.9% 0.0 0.0 n/a   55.0 kts
20121125T031013 ssmis18 NaN 69.9% 0.0 -920.0 n/a   55.0 kts
20121125T091540 tmi 5.0 89.0% 5.7 -20.7 n/a   51.4 kts
20121125T132619 ssmis17 12.2 0.0% 5.1 -5.1 n/a   41.5 kts
20121125T154638 ssmis18 190.1 0.0% 0.0 -0.0 n/a   36.8 kts
20121126T000706 tmi 101.2 0.0% 9.2 -9.2 n/a   34.3 kts
20121126T003745 ssmis17 134.5 0.0% 0.1 -0.1 n/a   34.1 kts
20121126T004806 ssmis16 123.4 0.0% 1.8 -1.8 n/a   34.0 kts
20121126T025836 ssmis18 5.0 0.0% 0.1 -0.1 n/a   32.6 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.

Error messages in intensity scores: -920 is used when the hottest pixel in the eye is <200K, to prevent false positives; -909 is a failure to process (bad input data).