Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20250117T191713 ssmis18_85 333.0 128.4 NaN% NaN NaN n/a   35.0 kts
20250117T212632 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   35.0 kts
20250117T215443 ssmis16_85 321.9 156.2 NaN% NaN NaN n/a   35.0 kts
20250118T074959 ssmis18_85 66.6 33.9 67.1% 11.5 -11.5 n/a   38.1 kts
20250118T095915 ssmis17_85 277.5 161.8 NaN% NaN NaN n/a   41.6 kts
20250118T102738 ssmis16_85 44.4 17.2 19.2% 5.6 -5.6 n/a   42.4 kts
20250118T172357 amsr2_85 11.1 6.1 56.2% 0.0 -0.0 n/a   45.0 kts
20250118T232326 gmi_85 77.7 161.8 NaN% NaN NaN n/a   49.5 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).