Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20230609T070953 amsr2_85 66.6 28.4 0.0% 2.8 -2.8 n/a   40.0 kts
20230609T100632 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   40.0 kts
20230609T123430 ssmis17_85 144.3 67.3 NaN% NaN NaN n/a   40.0 kts
20230609T192028 amsr2_85 77.7 33.9 NaN% NaN NaN n/a   38.9 kts
20230610T095342 ssmis18_85 22.2 6.1 0.0% 0.0 -0.0 n/a   31.2 kts
20230610T122122 ssmis17_85 299.7 145.1 NaN% NaN NaN n/a   30.0 kts
20230610T145615 gmi_85 166.5 78.4 NaN% NaN NaN n/a   30.0 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).