Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20120521T084901 tmi 12.2 8.2% 0.5 -0.5 n/a   30.0 kts
20120521T115418 ssmis16 34.5 24.7% 0.8 -0.8 n/a   30.0 kts
20120521T122553 ssmis17 45.6 20.6% 3.4 -3.4 n/a   30.0 kts
20120521T223522 ssmi15 212.4 NaN% NaN NaN n/a   30.0 kts
20120522T022933 ssmis18 212.4 12.3% 3.5 -3.5 n/a   31.9 kts
20120522T030648 ssmis18 212.4 13.7% 3.2 -3.2 n/a   32.6 kts
20120522T111220 ssmi15 201.2 11.0% 5.9 -5.9 n/a   35.0 kts
20120522T121259 ssmis17 112.3 17.1% 1.4 -1.4 n/a   35.0 kts
20120522T153509 ssmis18 212.4 NaN% NaN NaN n/a   35.0 kts
20120522T224319 tmi 12.2 15.1% 0.0 -0.0 n/a   35.0 kts
20120523T003415 ssmis16 134.5 4.1% 4.3 -4.3 n/a   35.0 kts
20120523T010341 ssmis17 123.4 9.6% 3.5 -3.5 n/a   35.0 kts
20120523T025438 ssmis18 167.9 16.4% 3.2 -3.2 n/a   35.0 kts
20120523T025602 ssmis18 145.7 9.6% 2.2 -2.2 n/a   35.0 kts
20120523T105603 ssmi15 56.7 21.9% 21.1 -21.1 n/a   53.3 kts
20120523T133926 ssmis16 34.5 17.8% 3.8 3.8 n/a   55.0 kts
20120523T152815 ssmis18 78.9 11.0% 6.0 6.0 n/a   55.0 kts
20120524T004936 ssmis17 78.9 100.0% 37.4 52.4 >65 kts   61.3 kts
20120524T005008 ssmis16 78.9 100.0% 33.2 48.2 >65 kts   61.3 kts
20120524T005116 ssmis17 78.9 100.0% 36.2 51.2 >65 kts   61.4 kts
20120524T024346 ssmis18 56.7 100.0% 33.6 48.6 >65 kts   65.8 kts
20120524T073752 tmi 67.8 100.0% 33.0 48.0 >65 kts   79.2 kts
20120524T131843 ssmis17 45.6 100.0% 47.6 62.6 >85 kts# 92.8 kts
20120524T131934 ssmis16 45.6 100.0% 45.8 60.8 >85 kts# 92.9 kts
20120524T223028 tmi 34.5 100.0% 58.1 73.1 >85 kts# 100.0 kts
20120525T000738 ssmis16 12.2 0.0% 0.8 0.8 n/a   100.0 kts
20120525T003813 ssmis16 23.4 100.0% 38.5 53.5 >65 kts   99.9 kts
20120525T003907 ssmis17 23.4 100.0% 30.7 45.7 >65 kts   99.9 kts
20120525T023224 ssmis18 23.4 100.0% 29.4 44.5 >65 kts   98.6 kts
20120525T064223 tmi 34.5 52.0% 11.9 11.9 n/a   94.5 kts
20120525T130558 ssmis17 45.6 9.6% 9.2 9.2 n/a   87.2 kts
20120525T131007 ssmis16 45.6 13.7% 10.1 10.1 n/a   86.9 kts
20120525T145323 ssmis18 190.1 6.8% 4.1 4.1 n/a   78.8 kts
20120525T213519 tmi 12.2 0.0% 3.1 3.1 n/a   59.1 kts
20120526T002656 ssmis17 67.8 0.0% 2.8 2.8 n/a   53.9 kts
20120526T054629 tmi 212.4 2.7% 1.4 -1.4 n/a   35.5 kts
20120526T121317 ssmis16 34.5 0.0% 4.0 -4.0 n/a   25.0 kts
20120526T125954 ssmis17 23.4 0.0% 3.6 -3.6 n/a   25.0 kts
20120526T145410 ssmis18 190.1 NaN% NaN NaN n/a   25.0 kts
20120526T230117 ssmi15 190.1 NaN% NaN NaN n/a   25.0 kts
20120526T233115 ssmis16 23.4 NaN% NaN NaN n/a   25.0 kts
20120526T234308 ssmis17 134.5 NaN% NaN NaN n/a   25.0 kts
20120527T001442 ssmis17 201.2 NaN% NaN NaN 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.