Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20121011T212130 ssmis16 23.4 80.8% 0.0 -0.0 n/a   38.5 kts
20121011T223102 tmi 123.4 6.8% 8.8 -8.8 n/a   39.5 kts
20121012T011105 ssmis18 201.2 20.6% 11.1 -11.1 n/a   39.5 kts
20121012T091141 ssmi15 101.2 NaN% NaN NaN n/a   35.0 kts
20121012T101251 ssmis16 90.1 9.6% 7.0 -7.0 n/a   35.0 kts
20121012T134102 ssmis18 12.2 32.9% 0.0 -0.0 n/a   35.0 kts
20121012T202721 ssmi15 5.0 0.0% 4.8 -4.8 n/a   33.2 kts
20121012T213537 tmi 12.2 0.0% 3.6 -3.6 n/a   31.8 kts
20121013T005842 ssmis18 12.2 41.1% 0.0 -0.0 n/a   30.0 kts
20121013T040738 tmi 190.1 13.7% 11.8 -11.8 n/a   30.0 kts
20121013T085547 ssmi15 12.2 0.0% 1.2 -1.2 n/a   30.0 kts
20121013T132845 ssmis18 145.7 0.0% 6.0 -6.0 n/a   27.5 kts
20121013T201203 ssmi15 12.2 0.0% 3.5 -3.5 n/a   25.0 kts
20121013T203943 tmi 5.0 0.0% 9.9 -9.9 n/a   25.0 kts
20121014T004613 ssmis18 145.7 0.0% 2.5 -2.5 n/a   25.0 kts
20121014T031152 tmi 5.0 0.0% 3.5 -3.5 n/a   25.0 kts
20121014T084049 ssmi15 12.2 0.0% 3.3 -3.3 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.

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).