Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20201020T161302 amsr2_85 111.0 50.6 11.0% 7.1 -7.1 n/a   30.0 kts
20201020T191658 ssmis18_85 166.5 78.4 NaN% NaN NaN n/a   30.0 kts
20201020T192920 ssmis16_85 188.7 89.5 15.1% 3.3 -3.3 n/a   30.0 kts
20201020T213802 ssmis17_85 144.3 72.8 10.6% 1.8 -1.8 n/a   30.0 kts
20201021T054018 gmi_85 22.2 161.8 NaN% NaN NaN n/a   30.0 kts
20201021T063447 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   29.5 kts
20201021T064632 ssmis16_85 33.3 6.1 0.0% 0.2 -0.2 n/a   29.4 kts
20201021T085454 ssmis17_85 99.9 78.4 0.0% 1.8 -1.8 n/a   27.6 kts
20201021T165611 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   23.9 kts
20201021T190018 gmi_85 66.6 28.4 6.8% 3.5 -3.5 n/a   22.8 kts
20201021T191641 ssmis16_85 88.8 39.5 5.5% 1.9 -1.9 n/a   22.6 kts
20201021T212506 ssmis17_85 22.2 6.1 0.0% 1.4 -1.4 n/a   21.4 kts
20201022T045018 gmi_85 333.0 161.8 NaN% NaN NaN n/a   20.0 kts
20201022T063347 ssmis16_85 266.4 128.4 1.6% 0.9 -0.9 n/a   20.0 kts
20201022T084154 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   20.0 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.

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).