Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20160725T232419 ssmis18 145.7 15.1% 2.3 -2.3 n/a   29.5 kts
20160726T071549 ssmi15 78.9 35.6% 0.2 -0.2 n/a   35.0 kts
20160726T083039 ssmis16 234.6 NaN% NaN NaN n/a   35.0 kts
20160726T105719 ssmis18 212.4 NaN% NaN NaN n/a   35.0 kts
20160726T110020 ssmis17 212.4 NaN% NaN NaN n/a   35.0 kts
20160726T194741 ssmi15 45.6 9.6% 0.0 -0.0 n/a   35.0 kts
20160726T210403 ssmis16 167.9 17.8% 1.7 -1.7 n/a   35.0 kts
20160726T233057 ssmis18 312.4 NaN% NaN NaN n/a   35.0 kts
20160726T233635 ssmis17 223.5 26.0% 4.8 -4.8 n/a   35.0 kts
20160727T070031 ssmi15 267.9 NaN% NaN NaN n/a   35.8 kts
20160727T081813 ssmis16 234.6 42.5% 3.0 -3.0 n/a   38.3 kts
20160727T102236 ssmis17 323.5 NaN% NaN NaN n/a   43.2 kts
20160727T193140 ssmi15 34.5 87.7% 15.6 -30.6 n/a   38.7 kts
20160727T205053 ssmis16 34.5 27.4% 12.6 -12.6 n/a   35.7 kts
20160727T232319 ssmis17 56.7 21.9% 1.2 -1.2 n/a   30.8 kts
20160728T103748 ssmis17 101.2 NaN% NaN NaN n/a   20.6 kts
20160728T121441 ssmis18 167.9 0.0% 1.2 -1.2 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).