Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20120521T081534 ssmis16 90.1 28.8% 7.6 -7.6 n/a   25.0 kts
20120521T100727 ssmis18 12.2 0.0% 0.8 -0.8 n/a   25.0 kts
20120521T163128 tmi 290.2 NaN% NaN NaN n/a   32.6 kts
20120521T181452 ssmi15 123.4 67.1% 0.0 -0.0 n/a   35.3 kts
20120521T205304 ssmis16 34.5 2.7% 3.7 -3.7 n/a   38.2 kts
20120521T224456 ssmis18 34.5 23.3% 2.9 -2.9 n/a   39.7 kts
20120522T064920 ssmis16 56.7 15.1% 6.5 -6.5 n/a   40.3 kts
20120522T074350 ssmis17 90.1 39.7% 3.3 -3.3 n/a   41.0 kts
20120522T153444 tmi 45.6 0.0% 6.2 -6.2 n/a   45.0 kts
20120522T203915 ssmis16 123.4 56.2% 4.1 -4.1 n/a   46.5 kts
20120522T204039 ssmis17 34.5 46.6% 5.2 -5.2 n/a   46.5 kts
20120522T223212 ssmis18 56.7 30.1% 2.5 -2.5 n/a   48.6 kts
20120523T062648 tmi 23.4 46.6% 15.2 -15.2 n/a   55.4 kts
20120523T072051 ssmis17 45.6 39.7% 13.4 13.4 n/a   56.1 kts
20120523T143829 tmi 112.3 50.7% 7.2 7.2 n/a   62.7 kts
20120523T202506 ssmis16 101.2 45.2% 6.1 6.1 n/a   65.0 kts
20120523T202729 ssmis17 101.2 45.2% 5.0 5.0 n/a   65.0 kts
20120524T063506 ssmi15 56.7 26.0% 11.1 11.1 n/a   65.0 kts
20120524T070124 ssmis17 78.9 31.5% 7.2 7.2 n/a   65.0 kts
20120524T111009 ssmis18 -919.0 -999.0% -999.0 -909.0 n/a   65.0 kts
20120524T134225 tmi 45.6 28.8% 4.0 4.0 n/a   65.6 kts
20120524T190646 ssmi15 101.2 30.1% 3.4 3.4 n/a   71.7 kts
20120524T201336 ssmis17 78.9 68.5% 5.3 5.3 n/a   74.1 kts
20120525T061420 tmi 45.6 1.4% 4.3 4.3 n/a   75.0 kts
20120525T062031 ssmi15 45.6 0.0% 4.4 4.4 n/a   75.0 kts
20120525T103418 ssmis18 112.3 6.8% 12.9 12.9 n/a   79.3 kts
20120525T124649 tmi 90.1 13.7% 5.2 5.2 n/a   79.8 kts
20120525T184939 ssmi15 101.2 31.5% 22.6 22.6 >65 kts   75.0 kts
20120525T195958 ssmis17 101.2 NaN% NaN NaN n/a   75.0 kts
20120525T233438 ssmis18 -919.0 -999.0% -999.0 -909.0 n/a   75.0 kts
20120526T060533 ssmi15 56.7 0.0% 3.4 3.4 n/a   69.9 kts
20120526T102439 ssmis18 156.8 8.2% 1.5 1.5 n/a   66.3 kts
20120526T115143 tmi 67.8 21.9% 1.9 1.9 n/a   65.1 kts
20120526T183354 ssmi15 223.5 15.1% 5.3 5.3 n/a   59.3 kts
20120526T194623 ssmis17 279.1 NaN% NaN NaN n/a   57.3 kts
20120526T232140 ssmis18 45.6 NaN% NaN NaN n/a   50.8 kts
20120527T055024 ssmi15 245.7 15.1% 5.0 -5.0 n/a   45.0 kts
20120527T060245 tmi 201.2 15.1% 3.4 -3.4 n/a   45.0 kts
20120527T063429 ssmis17 190.1 16.4% 6.1 -6.1 n/a   45.0 kts
20120527T105658 tmi 279.1 10.4% 5.4 -5.4 n/a   44.7 kts
20120527T182042 ssmi15 12.2 0.0% 1.7 -1.7 n/a   40.0 kts
20120527T193223 ssmis17 312.4 NaN% NaN NaN n/a   40.0 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.