Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20121003T191440 ssmis16 145.7 0.0% 1.6 -1.6 n/a   30.6 kts
20121003T192424 ssmis17 12.2 0.0% 1.2 -1.2 n/a   30.7 kts
20121003T232937 tmi 5.0 0.0% 7.7 -7.7 n/a   34.9 kts
20121004T083830 ssmis16 212.4 0.0% 2.1 -2.1 n/a   37.1 kts
20121004T194549 ssmis17 23.4 0.0% 5.1 -5.1 n/a   41.0 kts
20121004T195104 ssmis16 101.2 0.0% 6.2 -6.2 n/a   41.1 kts
20121004T223445 tmi 212.4 0.0% 4.2 -4.2 n/a   44.3 kts
20121004T231146 ssmis18 12.2 NaN% NaN NaN n/a   44.8 kts
20121005T081005 ssmis17 23.4 0.0% 4.1 -4.1 n/a   45.0 kts
20121005T082452 ssmis16 5.0 0.0% 1.1 -1.1 n/a   45.0 kts
20121005T190729 ssmis17 134.5 0.0% 1.1 -1.1 n/a   45.0 kts
20121005T192331 ssmis16 123.4 0.0% 2.0 -2.0 n/a   45.0 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.

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).