Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20200809T195817 ssmis16_85 66.6 28.4 17.8% 1.3 -1.3 n/a   31.6 kts
20200809T210108 ssmis18_85 122.1 72.8 39.1% 2.8 -2.8 n/a   32.5 kts
20200809T223326 ssmis17_85 44.4 17.2 0.0% 8.5 -8.5 n/a   33.8 kts
20200810T053641 amsr2_85 77.7 33.9 30.1% 8.0 -8.0 n/a   35.0 kts
20200810T081520 ssmis18_85 55.5 22.8 NaN% NaN NaN n/a   38.8 kts
20200810T174632 amsr2_85 144.3 67.3 43.8% 2.6 -2.6 n/a   54.6 kts
20200810T204751 ssmis18_85 88.8 39.5 49.3% 10.6 10.6 n/a   62.0 kts
20200811T182801 amsr2_85 166.5 78.4 NaN% NaN NaN n/a   34.2 kts
20200811T211038 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   29.7 kts
20200812T052712 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   22.7 kts
20200812T083037 ssmis16_85 155.4 72.8 NaN% NaN NaN n/a   21.5 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).