Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20210511T192423 ssmis16_85 22.2 6.1 0.0% 0.8 -0.8 n/a   30.0 kts
20210511T215431 ssmis17_85 299.7 145.1 32.9% 2.1 -2.1 n/a   30.0 kts
20210512T042459 amsr2_85 77.7 33.9 2.7% 5.4 -5.4 n/a   30.0 kts
20210512T072504 ssmis18_85 111.0 50.6 19.4% 3.3 -3.3 n/a   30.0 kts
20210512T073726 ssmi15_85 111.0 50.6 9.6% 8.0 -8.0 n/a   30.0 kts
20210512T164248 amsr2_85 22.2 6.1 68.5% 5.8 -5.8 n/a   30.0 kts
20210512T200533 ssmis18_85 288.6 139.5 NaN% NaN NaN n/a   31.7 kts
20210512T214109 ssmis17_85 266.4 128.4 NaN% NaN NaN n/a   33.1 kts
20210513T050811 amsr2_85 22.2 6.1 31.5% 0.0 -0.0 n/a   35.0 kts
20210513T072202 ssmi15_85 122.1 56.1 NaN% NaN NaN n/a   33.9 kts
20210513T075921 ssmis16_85 111.0 50.6 NaN% NaN NaN n/a   33.3 kts
20210513T102952 ssmis17_85 77.7 33.9 NaN% NaN NaN n/a   31.3 kts
20210513T172534 amsr2_85 333.0 56.1 NaN% NaN NaN n/a   25.5 kts
20210513T195241 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   25.0 kts
20210513T200020 ssmi15_85 333.0 161.8 NaN% NaN NaN n/a   25.0 kts
20210514T074640 ssmis16_85 333.0 139.5 NaN% NaN NaN n/a   25.0 kts
20210514T084153 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   25.0 kts
20210514T101636 ssmis17_85 210.9 100.6 NaN% NaN NaN n/a   25.0 kts
20210514T202556 ssmis16_85 210.9 95.1 0.0% 1.8 -1.8 n/a   25.0 kts
20210514T225522 ssmis17_85 233.1 111.7 NaN% NaN NaN n/a   23.9 kts
20210515T082934 ssmis18_85 222.0 106.2 NaN% NaN NaN n/a   20.0 kts
20210515T083207 ssmi15_85 333.0 161.8 NaN% NaN NaN n/a   20.0 kts
20210515T210754 ssmis18_85 155.4 72.8 NaN% NaN NaN n/a   20.0 kts
20210515T224211 ssmis17_85 11.1 2.5 0.0% 0.9 -0.9 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).