Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20200720T132314 ssmis18_85 133.2 56.1 13.7% 2.1 -2.1 n/a   30.0 kts
20200720T150953 ssmis17_85 122.1 78.4 1.4% 4.4 -4.4 n/a   30.0 kts
20200720T214655 amsr2_85 266.4 128.4 0.0% 7.7 -7.7 n/a   30.0 kts
20200721T222953 amsr2_85 44.4 17.2 0.0% 1.3 -1.3 n/a   25.0 kts
20200722T010849 ssmis16_85 77.7 33.9 0.0% 2.7 -2.7 n/a   25.0 kts
20200722T020525 ssmis18_85 77.7 33.9 0.0% 1.9 -1.9 n/a   25.0 kts
20200722T035109 ssmis17_85 99.9 45.0 0.0% 3.1 -3.1 n/a   25.0 kts
20200722T104123 amsr2_85 244.2 117.3 0.0% 3.2 -3.2 n/a   23.0 kts
20200722T134230 ssmis16_85 122.1 56.1 0.0% 3.0 -3.0 n/a   21.8 kts
20200722T143913 ssmis18_85 22.2 6.1 0.0% 2.1 -2.1 n/a   21.4 kts
20200722T162440 ssmis17_85 55.5 22.8 0.0% 3.3 -3.3 n/a   20.7 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).