Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20210801T121651 ssmi15_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20210801T232816 ssmi15_85 155.4 78.4 28.8% 5.6 -5.6 n/a   30.0 kts
20210802T000843 ssmis18_85 166.5 78.4 34.2% 1.7 -1.7 n/a   30.0 kts
20210802T110018 gmi_85 111.0 50.6 17.8% 4.4 -4.4 n/a   34.2 kts
20210802T120044 ssmi15_85 122.1 56.1 17.8% 3.4 -3.4 n/a   35.0 kts
20210802T124252 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   35.0 kts
20210802T204509 amsr2_85 244.2 2.5 0.0% 5.9 -5.9 n/a   35.0 kts
20210802T235615 ssmis18_85 277.5 122.9 3.1% 5.8 -5.8 n/a   35.0 kts
20210803T001945 ssmis16_85 122.1 89.5 1.4% 1.2 -1.2 n/a   34.7 kts
20210803T002018 gmi_85 255.3 117.3 NaN% NaN NaN n/a   34.7 kts
20210803T021732 ssmis17_85 233.1 111.7 6.8% 4.9 -4.9 n/a   33.1 kts
20210803T122925 ssmis18_85 188.7 106.2 4.1% 8.5 -8.5 n/a   29.6 kts
20210803T125245 ssmis16_85 22.2 139.5 NaN% NaN NaN n/a   29.3 kts
20210803T145005 ssmis17_85 33.3 6.1 0.0% 5.4 -5.4 n/a   27.6 kts
20210803T212834 amsr2_85 255.3 2.5 0.0% 0.4 -0.4 n/a   25.0 kts
20210803T234400 ssmis18_85 199.8 95.1 0.0% 8.5 -8.5 n/a   25.0 kts
20210804T000705 ssmis16_85 277.5 100.6 0.0% 7.4 -7.4 n/a   25.0 kts
20210804T020410 ssmis17_85 33.3 11.7 0.0% 0.0 -0.0 n/a   25.0 kts
20210804T093901 amsr2_85 166.5 78.4 0.0% 1.6 -1.6 n/a   21.3 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).