Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20210921T175529 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   25.0 kts
20210921T205439 ssmis16_85 255.3 122.9 NaN% NaN NaN n/a   25.0 kts
20210921T223211 ssmis17_85 321.9 156.2 NaN% NaN NaN n/a   25.0 kts
20210922T112311 ssmis17_85 77.7 33.9 NaN% NaN NaN n/a   25.0 kts
20210922T183829 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   25.5 kts
20210922T203040 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   27.1 kts
20210923T092317 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   35.0 kts
20210923T093337 ssmis16_85 99.9 161.8 NaN% NaN NaN n/a   35.0 kts
20210923T111013 ssmis17_85 111.0 39.5 44.9% 1.5 -1.5 n/a   35.0 kts
20210923T182518 gmi_85 333.0 161.8 NaN% NaN NaN n/a   33.1 kts
20210923T220904 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   31.0 kts
20210923T234530 ssmis17_85 188.7 89.5 12.7% 1.3 -1.3 n/a   30.1 kts
20210924T061259 amsr2_85 266.4 128.4 0.0% 2.8 -2.8 n/a   24.8 kts
20210924T091048 ssmis18_85 77.7 33.9 0.0% 7.1 -7.1 n/a   22.4 kts
20210924T092101 ssmis16_85 77.7 33.9 0.0% 8.6 -8.6 n/a   22.2 kts
20210924T105733 ssmis17_85 88.8 39.5 NaN% NaN NaN n/a   20.9 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).