Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20210912T080626 amsr2_85 222.0 89.5 19.7% 1.0 -1.0 n/a   35.0 kts
20210912T105706 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   35.0 kts
20210912T123811 ssmis17_85 299.7 161.8 NaN% NaN NaN n/a   35.0 kts
20210912T215922 ssmis18_85 88.8 39.5 12.3% 2.5 -2.5 n/a   35.0 kts
20210912T221148 ssmis16_85 88.8 39.5 8.2% 4.8 -4.8 n/a   35.0 kts
20210913T194521 amsr2_85 199.8 95.1 NaN% NaN NaN n/a   52.9 kts
20210914T075137 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   60.3 kts
20210914T134954 ssmis17_85 233.1 111.7 NaN% NaN NaN n/a   45.4 kts
20210914T203018 gmi_85 299.7 89.5 NaN% NaN NaN n/a   32.9 kts
20210915T083416 amsr2_85 321.9 156.2 NaN% NaN NaN n/a   26.9 kts
20210915T133612 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   25.0 kts
20210915T193349 amsr2_85 11.1 2.5 NaN% NaN NaN n/a   25.0 kts
20210916T005556 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   24.6 kts
20210916T073855 amsr2_85 199.8 95.1 NaN% NaN NaN n/a   21.8 kts
20210916T132237 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   19.4 kts
20210917T004238 ssmis17_85 199.8 95.1 0.0% 1.1 -1.1 n/a   15.0 kts
20210917T082134 amsr2_85 22.2 6.1 0.0% 0.1 -0.1 n/a   15.0 kts
20210917T094518 gmi_85 77.7 33.9 0.0% 0.1 -0.1 n/a   15.0 kts
20210917T111759 ssmis18_85 99.9 45.0 0.0% 1.6 -1.6 n/a   15.0 kts
20210917T112944 ssmis16_85 77.7 33.9 0.0% 1.5 -1.5 n/a   15.0 kts
20210917T130848 ssmis17_85 66.6 28.4 0.0% 1.2 -1.2 n/a   15.0 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).