Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20121025T020833 ssmis17 90.1 0.0% 1.9 -1.9 n/a   35.0 kts
20121025T022248 ssmis16 112.3 6.8% 0.8 -0.8 n/a   35.0 kts
20121025T041819 ssmis18 145.7 19.2% 3.8 -3.8 n/a   35.0 kts
20121025T050756 tmi 78.9 4.1% 12.7 -12.7 n/a   35.0 kts
20121025T115250 ssmi15 45.6 37.0% 7.3 -7.3 n/a   35.0 kts
20121025T145854 tmi 56.7 31.5% 2.9 -2.9 n/a   35.0 kts
20121025T170835 ssmis18 34.5 12.3% 9.4 -9.4 n/a   34.5 kts
20121026T003024 ssmi15 179.0 2.7% 1.5 -1.5 n/a   29.8 kts
20121026T020728 ssmis17 167.9 NaN% NaN NaN n/a   29.0 kts
20121026T021604 ssmis16 201.2 NaN% NaN NaN n/a   28.9 kts
20121026T145631 ssmis17 134.5 13.7% 0.8 -0.8 n/a   25.0 kts
20121026T164352 ssmis18 179.0 NaN% NaN NaN 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).