Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20130817T032243 tmi 56.7 15.1% 0.5 -0.5 n/a   28.8 kts
20130817T065533 ssmi15 256.8 28.4% 5.1 -5.1 n/a   30.0 kts
20130817T080837 ssmis17 112.3 16.4% 2.7 -2.7 n/a   30.0 kts
20130817T105500 ssmis18 90.1 26.0% 2.0 -2.0 n/a   30.0 kts
20130817T192645 ssmi15 212.4 NaN% NaN NaN n/a   30.0 kts
20130817T211913 ssmis17 223.5 NaN% NaN NaN n/a   30.0 kts
20130817T232810 ssmis18 145.7 0.0% 5.4 -5.4 n/a   30.0 kts
20130818T022642 tmi 134.5 15.1% 5.0 -5.0 n/a   31.8 kts
20130818T063936 ssmi15 34.5 26.0% 9.6 -9.6 n/a   35.0 kts
20130818T083337 ssmis17 234.6 NaN% NaN NaN n/a   35.0 kts
20130818T104247 ssmis18 45.6 NaN% NaN NaN n/a   35.0 kts
20130818T185754 tmi 78.9 NaN% NaN NaN n/a   40.8 kts
20130818T191103 ssmi15 145.7 31.5% 1.1 -1.1 n/a   41.0 kts
20130818T191106 ssmi15 145.7 30.1% 0.7 -0.7 n/a   41.0 kts
20130818T210618 ssmis17 23.4 89.0% 15.9 -30.9 n/a   42.6 kts
20130818T231559 ssmis18 34.5 63.0% 12.1 -12.1 n/a   44.4 kts
20130819T062403 ssmi15 56.7 43.8% 10.9 -10.9 n/a   50.0 kts
20130819T062404 ssmi15 45.6 42.5% 11.3 -11.3 n/a   50.0 kts
20130819T084943 ssmis16 323.5 NaN% NaN NaN n/a   50.0 kts
20130819T180209 tmi 101.2 27.4% 1.7 1.7 n/a   55.0 kts
20130819T185513 ssmi15 123.4 37.0% 0.4 0.4 n/a   55.0 kts
20130819T212209 ssmis16 179.0 NaN% NaN NaN n/a   55.0 kts
20130820T060902 ssmi15 223.5 NaN% NaN NaN n/a   55.0 kts
20130820T060911 ssmi15 201.2 NaN% NaN NaN n/a   55.0 kts
20130820T083741 ssmis16 145.7 4.1% 0.0 0.0 n/a   57.0 kts
20130820T184414 tmi 78.9 38.4% 10.8 10.8 n/a   60.2 kts
20130820T210816 ssmis16 67.8 30.1% 3.2 3.2 n/a   62.7 kts
20130820T222016 ssmis17 67.8 60.3% 7.2 7.2 n/a   64.1 kts
20130821T003124 ssmis18 45.6 100.0% 22.6 37.6 >65 kts   65.0 kts
20130821T011613 tmi 12.2 NaN% NaN NaN n/a   65.0 kts
20130821T081130 ssmis16 23.4 67.1% 11.3 11.3 n/a   66.1 kts
20130821T174707 tmi 145.7 NaN% NaN NaN n/a   75.0 kts
20130821T200340 ssmi15 5.0 NaN% NaN NaN n/a   75.0 kts
20130821T220720 ssmis17 167.9 NaN% NaN NaN n/a   74.1 kts
20130822T001905 tmi 5.0 23.3% 0.0 0.0 n/a   68.7 kts
20130822T001914 ssmis18 323.5 NaN% NaN NaN n/a   68.7 kts
20130822T071949 ssmi15 23.4 0.0% 4.2 -4.2 n/a   47.8 kts
20130822T092456 ssmis17 12.2 2.7% 2.3 -2.3 n/a   44.8 kts
20130822T113705 ssmis18 179.0 NaN% NaN NaN n/a   42.2 kts
20130822T182804 tmi 67.8 8.2% 2.9 -2.9 n/a   34.4 kts
20130822T194755 ssmi15 112.3 NaN% NaN NaN n/a   32.8 kts
20130822T222346 ssmis16 123.4 8.2% 3.5 -3.5 n/a   29.5 kts
20130823T070419 ssmi15 112.3 NaN% NaN NaN n/a   20.0 kts
20130823T094128 ssmis16 90.1 4.1% 2.0 -2.0 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).