Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20110126T123822 amsre NaN 4.1% 2.8 -2.8 n/a   35.0 kts
20110130T041305 tmi NaN 32.9% 1.0 -1.0 n/a   37.5 kts
20110130T135234 amsre -919.0 -999.0% -999.0 -909.0 n/a   47.3 kts
20110130T175928 ssmis17 45.6 100.0% 36.1 -51.1 n/a   53.9 kts
20110130T190312 tmi 67.8 100.0% 31.8 46.8 >65 kts   55.8 kts
20110130T190553 ssmis16 78.9 100.0% 33.9 48.9 >65 kts   55.9 kts
20110130T205357 ssmis18 NaN 46.6% 8.5 8.5 n/a   59.2 kts
20110131T063613 ssmis17 23.4 93.2% 17.3 32.3 >65 kts   79.9 kts
20110131T093116 ssmis18 NaN 61.6% 0.0 0.0 n/a   86.1 kts
20110131T143553 amsre NaN 65.8% 0.9 0.9 n/a   92.6 kts
20110201T035535 tmi 67.8 100.0% 31.2 46.2 >65 kts   106.4 kts
20110201T151923 amsre 56.7 100.0% 53.1 68.1 >85 kts# 121.7 kts
20110201T184627 tmi 45.6 100.0% 26.0 41.0 >65 kts   122.9 kts
20110201T191559 ssmis17 45.6 68.5% 19.4 19.4 n/a   123.1 kts
20110201T203019 ssmis16 45.6 100.0% 35.8 50.8 >65 kts   123.5 kts
20110201T221224 ssmis18 45.6 100.0% 32.3 47.3 >65 kts   124.1 kts
20110202T033227 amsre 45.6 100.0% 37.3 52.3 >65 kts   128.1 kts
20110202T072739 ssmis17 34.5 100.0% 50.9 65.9 >85 kts# 132.4 kts
20110202T083852 ssmis16 34.5 100.0% 53.5 68.5 >85 kts# 133.5 kts
20110202T104801 ssmis18 34.5 100.0% 56.1 71.1 >85 kts# 134.8 kts
20110202T160322 amsre 23.4 100.0% 64.7 79.7 >85 kts# 115.1 kts
20110202T192657 tmi 90.1 83.6% 13.9 13.9 n/a   84.2 kts
20110202T201847 ssmis16 NaN 41.1% 3.8 3.8 n/a   76.9 kts
20110202T220133 ssmis18 NaN 39.7% 0.0 0.0 n/a   65.4 kts
20110203T033800 tmi NaN 0.0% 0.0 0.0 n/a   59.8 kts
20110203T041451 amsre NaN 0.0% 2.6 2.6 n/a   59.4 kts
20110203T103520 ssmis18 NaN 0.0% 0.0 -0.0 n/a   47.4 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.