Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20130820T075459 tmi 5.0 17.8% 3.9 -3.9 n/a   30.0 kts
20130820T142724 tmi 112.3 0.0% 1.3 -1.3 n/a   30.0 kts
20130821T150900 tmi 56.7 NaN% NaN NaN n/a   30.0 kts
20130822T073952 tmi 12.2 0.0% 8.3 -8.3 n/a   30.0 kts
20130822T141236 tmi 67.8 0.0% 1.3 -1.3 n/a   30.0 kts
20130823T064332 tmi 179.0 0.0% 1.2 -1.2 n/a   30.0 kts
20130824T054729 tmi 134.5 NaN% NaN NaN n/a   30.0 kts
20130824T135824 tmi 5.0 0.0% 3.2 -3.2 n/a   30.0 kts
20130825T062922 tmi 5.0 NaN% NaN NaN n/a   30.0 kts
20130825T214602 ssmi15 23.4 87.7% 17.3 -32.3 n/a   42.3 kts
20130825T222015 ssmis16 23.4 NaN% NaN NaN n/a   43.4 kts
20130825T235949 ssmis17 34.5 45.2% 4.2 -4.2 n/a   45.0 kts
20130826T000052 ssmis17 23.4 26.0% 0.0 -0.0 n/a   45.0 kts
20130826T021420 ssmis18 34.5 100.0% 21.4 -36.4 n/a   45.0 kts
20130826T021536 ssmis18 34.5 100.0% 22.8 -37.8 n/a   45.0 kts
20130826T053259 tmi 34.5 100.0% 31.9 -46.9 n/a   45.0 kts
20130826T053302 tmi 34.5 100.0% 29.5 -44.5 n/a   45.0 kts
20130826T101739 ssmi15 34.5 16.4% 11.3 -11.3 n/a   38.4 kts
20130826T112207 ssmis16 212.4 NaN% NaN NaN n/a   36.2 kts
20130826T123344 ssmis17 34.5 60.3% 8.8 -8.8 n/a   34.0 kts
20130826T134412 tmi 45.6 67.1% 0.2 -0.2 n/a   31.8 kts
20130826T144900 ssmis18 12.2 0.0% 1.1 -1.1 n/a   30.2 kts
20130826T213052 ssmi15 179.0 0.0% 2.2 -2.2 n/a   26.1 kts
20130826T234432 ssmis17 201.2 NaN% NaN NaN n/a   25.1 kts
20130826T234843 ssmis17 179.0 NaN% NaN NaN n/a   25.1 kts
20130827T020239 ssmis18 101.2 0.0% 0.5 -0.5 n/a   24.0 kts
20130827T020406 ssmis18 101.2 4.1% 0.5 -0.5 n/a   24.0 kts
20130827T100140 ssmi15 101.2 0.0% 2.4 -2.4 n/a   20.7 kts
20130827T122044 ssmis17 167.9 2.7% 2.9 -2.9 n/a   20.0 kts
20130827T124759 tmi 156.8 2.7% 2.8 -2.8 n/a   20.0 kts
20130827T143125 ssmis18 179.0 1.4% 2.4 -2.4 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).