Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20151016T042411 ssmis16 145.7 13.7% 2.9 -2.9 n/a   35.0 kts
20151016T053000 ssmis17 23.4 43.8% 0.0 -0.0 n/a   35.0 kts
20151016T071012 ssmis18 156.8 NaN% NaN NaN n/a   35.1 kts
20151016T144230 ssmi15 167.9 9.6% 5.9 -5.9 n/a   39.1 kts
20151016T155249 ssmis16 167.9 NaN% NaN NaN n/a   39.6 kts
20151016T190606 ssmis19 23.4 57.5% 0.0 -0.0 n/a   39.9 kts
20151016T190737 ssmis19 23.4 64.4% 0.0 -0.0 n/a   39.9 kts
20151016T200212 ssmis18 34.5 NaN% NaN NaN n/a   39.7 kts
20151017T031652 ssmi15 190.1 8.2% 7.8 -7.8 n/a   36.3 kts
20151017T040500 ssmis16 12.2 84.9% 3.2 -3.2 n/a   35.9 kts
20151017T065542 ssmis19 NaN NaN% NaN -920.0 n/a   34.6 kts
20151017T074438 ssmis19 212.4 NaN% NaN NaN n/a   34.2 kts
20151017T185528 ssmis19 45.6 0.0% 0.2 -0.2 n/a   30.0 kts
20151017T185529 ssmis19 45.6 0.0% 0.2 -0.2 n/a   30.0 kts
20151017T185645 ssmis17 212.4 0.0% 4.0 -4.0 n/a   30.0 kts
20151017T195105 ssmis18 67.8 0.0% 4.4 -4.4 n/a   30.0 kts
20151018T071248 ssmis17 101.2 0.0% 3.5 -3.5 n/a   25.0 kts
20151018T080258 ssmis18 5.0 0.0% 0.0 -0.0 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).