Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20130828T235154 ssmis16 23.4 0.0% 0.7 -0.7 n/a   40.0 kts
20130829T032146 ssmis18 56.7 20.6% 0.0 -0.0 n/a   43.0 kts
20130829T055929 tmi 23.4 63.0% 0.0 -0.0 n/a   45.0 kts
20130829T111028 ssmi15 56.7 0.0% 1.6 -1.6 n/a   40.8 kts
20130829T121830 ssmis16 5.0 NaN% NaN NaN n/a   39.7 kts
20130829T123133 tmi 112.3 6.8% 1.0 -1.0 n/a   39.6 kts
20130829T133113 ssmis17 34.5 0.0% 0.5 -0.5 n/a   38.8 kts
20130829T154808 ssmis18 67.8 0.0% 0.0 -0.0 n/a   37.1 kts
20130829T222643 ssmi15 56.7 0.0% 2.5 -2.5 n/a   28.8 kts
20130830T005259 ssmis17 12.2 0.0% 0.2 -0.2 n/a   27.3 kts
20130830T031052 ssmis18 112.3 NaN% NaN NaN n/a   26.3 kts
20130830T064101 tmi 90.1 NaN% NaN NaN n/a   24.7 kts
20130830T105409 ssmi15 101.2 0.0% 3.8 -3.8 n/a   22.4 kts
20130830T113451 tmi 12.2 0.0% 1.8 -1.8 n/a   22.0 kts
20130830T135148 ssmis16 201.2 NaN% NaN NaN n/a   20.9 kts
20130830T153959 ssmis18 56.7 0.0% 3.2 -3.2 n/a   20.3 kts
20130831T010850 ssmis16 156.8 0.0% 2.5 -2.5 n/a   20.0 kts
20130831T054428 tmi 23.4 0.0% 2.8 -2.8 n/a   20.0 kts
20130831T103815 tmi 45.6 0.0% 2.7 -2.7 n/a   20.0 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).