Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20210611T183035 amsr2_85 77.7 50.6 NaN% NaN NaN n/a   25.0 kts
20210612T092124 ssmis18_85 144.3 145.1 NaN% NaN NaN n/a   30.6 kts
20210612T215419 ssmis18_85 233.1 111.7 NaN% NaN NaN n/a   24.5 kts
20210613T060749 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   20.0 kts
20210613T090908 ssmis18_85 44.4 17.2 0.0% 1.0 -1.0 n/a   20.0 kts
20210613T092202 ssmi15_85 321.9 156.2 NaN% NaN NaN n/a   20.0 kts
20210613T094635 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   20.0 kts
20210613T181734 amsr2_85 222.0 106.2 NaN% NaN NaN n/a   20.0 kts
20210613T214113 ssmis18_85 321.9 156.2 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).