Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20160911T050224 ssmis16 12.2 65.8% 0.0 -0.0 n/a   30.0 kts
20160911T072654 ssmis17 23.4 49.3% 0.0 -0.0 n/a   30.0 kts
20160911T080109 ssmis18 23.4 52.0% 0.2 -0.2 n/a   30.0 kts
20160911T172525 ssmis16 34.5 49.3% 3.9 -3.9 n/a   30.0 kts
20160911T194948 ssmis17 78.9 19.2% 6.2 -6.2 n/a   30.0 kts
20160911T202428 ssmis18 78.9 15.1% 5.0 -5.0 n/a   30.0 kts
20160912T025851 ssmi15 134.5 6.8% 4.3 -4.3 n/a   30.0 kts
20160912T040927 ssmis16 223.5 NaN% NaN NaN n/a   30.0 kts
20160912T071432 ssmis17 323.5 NaN% NaN NaN n/a   30.0 kts
20160912T074939 ssmis18 301.3 NaN% NaN NaN n/a   30.0 kts
20160912T151819 ssmi15 12.2 0.0% 0.8 -0.8 n/a   30.0 kts
20160912T171046 ssmis16 101.2 NaN% NaN NaN n/a   30.0 kts
20160912T193503 ssmis17 23.4 0.0% 1.0 -1.0 n/a   30.0 kts
20160912T201034 ssmis18 267.9 NaN% NaN NaN n/a   30.0 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).