Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20211231T150620 amsr2_85 88.8 39.5 13.7% 8.0 -8.0 n/a   52.6 kts
20211231T174214 ssmis16_85 255.3 117.3 NaN% NaN NaN n/a   54.8 kts
20211231T175525 ssmis18_85 188.7 89.5 0.0% 5.2 -5.2 n/a   54.9 kts
20211231T201919 ssmis17_85 255.3 134.0 NaN% NaN NaN n/a   51.1 kts
20220101T031558 amsr2_85 266.4 11.7 NaN% NaN NaN n/a   42.3 kts
20220101T061351 ssmis16_85 266.4 111.7 NaN% NaN NaN n/a   40.0 kts
20220101T062719 ssmis18_85 188.7 117.3 NaN% NaN NaN n/a   40.0 kts
20220101T081518 gmi_85 333.0 11.7 41.1% 1.4 -1.4 n/a   40.0 kts
20220101T085224 ssmis17_85 277.5 134.0 NaN% NaN NaN n/a   40.0 kts
20220101T172943 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   40.0 kts
20220101T174311 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   40.0 kts
20220101T200626 ssmis17_85 11.1 2.5 0.0% 0.0 -0.0 n/a   39.1 kts
20220101T213518 gmi_85 299.7 145.1 NaN% NaN NaN n/a   38.5 kts
20220102T060008 ssmis16_85 299.7 145.1 NaN% NaN NaN n/a   35.0 kts
20220102T061342 ssmis18_85 122.1 56.1 NaN% NaN NaN n/a   35.0 kts
20220102T083631 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   35.0 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).