Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20151009T235949 ssmis16 156.8 9.6% 2.4 -2.4 n/a   35.0 kts
20151010T011935 ssmis19 201.2 9.6% 2.4 -2.4 n/a   35.0 kts
20151010T012914 ssmis19 212.4 8.2% 3.2 -3.2 n/a   35.0 kts
20151010T013939 ssmis17 190.1 6.8% 3.0 -3.0 n/a   35.0 kts
20151010T022733 ssmis18 201.2 9.6% 3.1 -3.1 n/a   35.0 kts
20151010T111537 ssmis16 78.9 4.1% 3.2 -3.2 n/a   35.0 kts
20151010T235041 ssmis16 179.0 0.0% 6.0 -6.0 n/a   25.0 kts
20151011T012613 ssmis17 45.6 19.2% 2.8 -2.8 n/a   25.0 kts
20151011T100710 ssmi15 212.4 1.4% 1.6 -1.6 n/a   25.0 kts
20151011T110245 ssmis16 201.2 9.6% 3.3 -3.3 n/a   25.0 kts
20151011T134448 ssmis19 201.2 NaN% NaN NaN n/a   25.0 kts
20151011T224043 ssmi15 167.9 NaN% NaN NaN n/a   25.0 kts
20151011T233739 ssmis16 45.6 21.9% 2.2 -2.2 n/a   25.0 kts
20151012T095139 ssmi15 12.2 0.0% 2.3 -2.3 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).