Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20131009T112136 ssmis16 23.4 0.0% 0.4 -0.4 n/a   40.0 kts
20131009T133606 ssmis18 23.4 95.9% 9.7 -24.7 n/a   41.4 kts
20131009T181018 tmi 34.5 100.0% 45.2 -60.2 n/a   50.2 kts
20131010T021231 ssmis18 23.4 100.0% 50.4 65.4 >85 kts# 57.7 kts
20131010T022250 tmi 23.4 100.0% 46.3 61.3 >85 kts# 58.0 kts
20131010T110904 ssmis16 12.2 100.0% 48.7 63.7 >85 kts# 95.3 kts
20131010T125011 ssmis18 12.2 100.0% 37.2 52.2 >65 kts   104.1 kts
20131010T171443 tmi 12.2 100.0% 63.3 78.3 >85 kts# 122.9 kts
20131010T234217 ssmis16 12.2 100.0% 27.1 42.1 >65 kts   135.0 kts
20131011T015536 ssmis18 5.0 100.0% 22.8 37.8 >65 kts   135.0 kts
20131011T092145 ssmi15 45.6 100.0% 12.1 27.1 >65 kts   138.0 kts
20131011T102354 ssmis16 5.0 100.0% 19.6 34.6 >65 kts   139.1 kts
20131011T120431 ssmis17 12.2 100.0% 24.5 39.5 >65 kts   140.0 kts
20131011T175645 tmi 23.4 NaN% NaN NaN n/a   140.0 kts
20131011T215510 ssmi15 12.2 100.0% 54.6 69.6 >85 kts# 140.0 kts
20131011T233106 ssmis16 12.2 100.0% 43.5 58.5 >65 kts   140.0 kts
20131012T003908 ssmis17 23.4 100.0% 48.7 63.7 >85 kts# 139.8 kts
20131012T020818 tmi 12.2 100.0% 49.4 64.4 >85 kts# 137.9 kts
20131012T090648 ssmi15 12.2 93.2% 18.5 33.5 >65 kts   125.2 kts
20131012T102218 ssmis16 12.2 93.2% 18.1 33.1 >65 kts   123.2 kts
20131012T114436 ssmis17 12.2 89.0% 14.5 29.5 >65 kts   120.6 kts
20131012T170052 tmi 12.2 100.0% 52.4 67.3 >85 kts# 101.1 kts
20131012T213845 ssmi15 190.1 11.0% 0.9 0.9 n/a   99.6 kts
20131012T230930 ssmis16 212.4 20.6% 11.8 11.8 n/a   96.2 kts
20131013T002524 ssmis17 12.2 0.0% 0.0 0.0 n/a   91.4 kts
20131013T011159 tmi 179.0 0.0% 6.8 6.8 n/a   87.8 kts
20131013T114018 ssmis17 34.5 0.0% 3.1 -3.1 n/a   47.0 kts
20131013T143107 ssmis18 101.2 0.0% 0.3 -0.3 n/a   38.9 kts
20131013T174311 tmi 12.2 0.0% 0.8 -0.8 n/a   30.7 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).