Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20160818T075627 ssmis16 312.4 5.9% 1.4 -1.4 n/a   25.0 kts
20160818T102512 ssmis18 323.5 NaN% NaN NaN n/a   25.0 kts
20160818T102623 ssmis17 323.5 NaN% NaN NaN n/a   25.0 kts
20160818T210437 ssmis16 279.1 NaN% NaN NaN n/a   36.0 kts
20160818T233406 ssmis17 234.6 16.4% 1.6 -1.6 n/a   39.9 kts
20160818T234824 ssmis18 201.2 11.0% 0.0 -0.0 n/a   40.0 kts
20160819T073717 ssmi15 56.7 12.3% 3.5 -3.5 n/a   40.0 kts
20160819T082007 ssmis16 34.5 15.1% 9.6 -9.6 n/a   40.0 kts
20160819T101518 ssmis17 12.2 48.0% 2.5 -2.5 n/a   39.8 kts
20160819T200806 ssmi15 201.2 6.8% 2.6 -2.6 n/a   33.5 kts
20160819T205226 ssmis16 101.2 NaN% NaN NaN n/a   33.0 kts
20160820T072154 ssmi15 123.4 0.0% 1.3 -1.3 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).