Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20130715T214255 ssmis17 190.1 56.2% 1.5 -1.5 n/a   25.0 kts
20130715T232751 ssmis18 190.1 NaN% NaN NaN n/a   25.0 kts
20130716T065148 ssmi15 34.5 43.8% 10.2 -10.2 n/a   25.0 kts
20130716T081858 ssmis17 23.4 28.8% 1.3 -1.3 n/a   25.0 kts
20130716T092137 ssmis16 23.4 NaN% NaN NaN n/a   25.0 kts
20130716T192457 ssmi15 45.6 26.0% 0.9 -0.9 n/a   25.5 kts
20130716T195629 tmi 45.6 43.8% 5.6 -5.6 n/a   25.9 kts
20130716T212939 ssmis17 34.5 12.3% 0.1 -0.1 n/a   27.4 kts
20130717T063652 ssmi15 5.0 9.6% 0.0 -0.0 n/a   35.0 kts
20130717T090948 ssmis16 45.6 74.0% 0.2 -0.2 n/a   35.0 kts
20130717T104846 tmi 201.2 NaN% NaN NaN n/a   35.0 kts
20130717T115725 ssmis18 56.7 12.3% 3.5 -3.5 n/a   35.0 kts
20130717T185905 tmi 167.9 0.0% 6.0 -6.0 n/a   40.0 kts
20130717T214211 ssmis16 312.4 6.8% 6.9 -6.9 n/a   40.0 kts
20130718T002754 ssmis18 134.5 24.7% 0.3 -0.3 n/a   40.0 kts
20130718T083335 ssmis16 323.5 NaN% NaN NaN n/a   38.0 kts
20130718T101237 ssmis17 323.5 NaN% NaN NaN n/a   36.1 kts
20130718T113018 tmi 323.5 NaN% NaN NaN n/a   35.1 kts
20130718T115909 ssmis18 323.5 NaN% NaN NaN n/a   35.0 kts
20130718T121701 ssmis18 279.1 NaN% NaN NaN n/a   35.0 kts
20130718T180257 tmi 323.5 NaN% NaN NaN n/a   33.0 kts
20130718T212846 ssmis16 323.5 NaN% NaN NaN n/a   26.7 kts
20130718T224145 ssmis17 312.4 NaN% NaN NaN n/a   23.6 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).