Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20101220T064430 ssmis16 NaN 43.8% 0.0 -0.0 n/a   45.0 kts
20101220T075651 ssmis18 NaN 41.1% 0.0 -0.0 n/a   45.0 kts
20101220T110851 tmi 12.2 100.0% 11.6 -26.6 n/a   45.0 kts
20101220T134844 amsre NaN 15.1% 8.1 -8.1 n/a   42.8 kts
20101220T180427 ssmis17 NaN 0.0% 0.0 -0.0 n/a   35.0 kts
20101220T202905 ssmis18 NaN 13.7% 5.7 -5.7 n/a   35.0 kts
20101221T004422 amsre NaN 0.0% 2.1 -2.1 n/a   35.0 kts
20101221T034100 tmi NaN 8.2% 6.5 -6.5 n/a   35.0 kts
20101221T052052 ssmis17 NaN 0.0% 6.2 -6.2 n/a   35.0 kts
20101221T063312 ssmis16 -919.0 -999.0% -999.0 -909.0 n/a   35.0 kts
20101221T074617 ssmis18 NaN 0.0% 4.7 -4.7 n/a   35.0 kts
20101221T101334 tmi NaN 0.0% 0.0 -0.0 n/a   35.0 kts
20101221T174950 ssmis17 NaN 0.0% 6.8 -6.8 n/a   35.0 kts
20101221T185739 ssmis16 NaN 0.0% 7.6 -7.6 n/a   35.0 kts
20101221T201513 ssmis18 NaN 0.0% 1.4 -1.4 n/a   35.0 kts
20101222T042417 tmi NaN 0.0% 2.0 -2.0 n/a   35.0 kts
20101222T050951 ssmis17 NaN 0.0% 7.0 -7.0 n/a   35.0 kts
20101222T060217 tmi NaN 0.0% 1.0 -1.0 n/a   35.0 kts
20101222T062214 ssmis16 NaN 0.0% 4.2 -4.2 n/a   35.0 kts
20101222T073559 ssmis18 NaN 0.0% 0.0 -0.0 n/a   34.9 kts
20101222T074007 tmi NaN 0.0% 0.0 -0.0 n/a   34.9 kts
20101222T133300 amsre NaN 0.0% 3.4 -3.4 n/a   32.7 kts
20101222T173524 ssmis17 NaN 0.0% 0.0 -0.0 n/a   30.3 kts
20101222T184738 ssmis16 NaN 0.0% 4.3 -4.3 n/a   30.0 kts
20101222T200135 ssmis18 NaN 0.0% 5.3 -5.3 n/a   30.0 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.