Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20131119T134126 ssmis18 12.2 74.0% 0.0 -0.0 n/a   38.4 kts
20131119T211048 tmi 5.0 61.6% 10.8 -10.8 n/a   48.5 kts
20131119T214859 ssmi15 134.5 41.1% 6.1 -6.1 n/a   49.1 kts
20131119T233501 ssmis16 23.4 23.3% 3.0 -3.0 n/a   50.0 kts
20131120T003126 ssmis17 34.5 67.1% 8.4 -8.4 n/a   50.0 kts
20131120T021731 ssmis18 34.5 87.7% 11.5 -26.5 n/a   50.0 kts
20131120T085913 ssmi15 5.0 39.7% 2.3 -2.3 n/a   50.0 kts
20131120T115128 ssmis17 12.2 82.2% 7.1 -7.1 n/a   50.0 kts
20131120T232200 ssmis16 12.2 87.7% 13.1 28.1 >65 kts   59.5 kts
20131121T001814 ssmis17 12.2 75.3% 0.0 0.0 n/a   60.3 kts
20131121T020503 ssmis18 12.2 100.0% 12.4 27.4 >65 kts   62.1 kts
20131121T060533 tmi 12.2 39.7% 7.6 7.6 n/a   65.0 kts
20131121T205743 tmi 123.4 4.1% 2.6 -2.6 n/a   47.7 kts
20131121T235745 ssmis17 101.2 17.8% 0.0 -0.0 n/a   45.0 kts
20131122T050940 tmi 167.9 6.8% 2.6 -2.6 n/a   35.4 kts
20131122T112806 ssmis16 5.0 0.0% 0.7 -0.7 n/a   34.6 kts
20131122T143019 ssmis18 5.0 0.0% 1.3 -1.3 n/a   32.9 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).