Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20151022T034944 ssmi15 112.3 2.7% 2.4 -2.4 n/a   25.0 kts
20151022T044133 ssmis16 67.8 28.8% 0.9 -0.9 n/a   25.0 kts
20151022T082956 ssmis19 234.6 NaN% NaN NaN n/a   25.0 kts
20151022T161731 ssmi15 290.2 NaN% NaN NaN n/a   25.0 kts
20151022T174507 ssmis16 145.7 12.3% 3.4 -3.4 n/a   25.0 kts
20151023T033516 ssmi15 23.4 43.8% 5.5 -5.5 n/a   29.1 kts
20151023T050424 ssmis16 45.6 39.7% 11.0 -11.0 n/a   29.9 kts
20151023T055851 ssmis17 134.5 9.6% 3.7 -3.7 n/a   30.0 kts
20151023T073725 ssmis18 234.6 15.1% 3.3 -3.3 n/a   30.0 kts
20151023T155932 ssmi15 23.4 0.0% 2.4 -2.4 n/a   30.0 kts
20151023T172734 ssmis16 90.1 0.0% 3.6 -3.6 n/a   30.0 kts
20151023T185849 ssmis17 301.3 NaN% NaN NaN n/a   30.0 kts
20151023T190146 ssmis19 245.7 0.0% 3.8 -3.8 n/a   30.0 kts
20151023T200308 ssmis18 45.6 6.8% 7.4 -7.4 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).