Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20210707T172018 gmi_85 266.4 134.0 NaN% NaN NaN n/a   20.6 kts
20210707T190714 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   20.0 kts
20210707T213937 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   20.0 kts
20210707T221018 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   20.0 kts
20210708T001823 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   20.0 kts
20210708T060147 amsr2_85 299.7 145.1 NaN% NaN NaN n/a   20.0 kts
20210708T085434 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   18.8 kts
20210708T092440 ssmis16_85 144.3 67.3 0.0% 0.9 -0.9 n/a   18.6 kts
20210708T113239 ssmis17_85 77.7 33.9 0.0% 0.6 -0.6 n/a   17.7 kts
20210708T212703 ssmis18_85 199.8 95.1 NaN% NaN NaN n/a   15.0 kts
20210708T215701 ssmis16_85 299.7 145.1 NaN% NaN NaN n/a   15.0 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).