Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20180919T085951 amsr2_85 222.0 122.9 NaN% NaN NaN n/a   25.0 kts
20180919T134205 ssmis18_85 210.9 100.6 NaN% NaN NaN n/a   26.4 kts
20180919T142135 ssmis17_85 177.6 83.9 NaN% NaN NaN n/a   27.0 kts
20180919T185140 gmi_85 288.6 83.9 NaN% NaN NaN n/a   30.0 kts
20180919T224105 ssmis16_85 155.4 72.8 NaN% NaN NaN n/a   30.0 kts
20180920T010018 ssmis18_85 66.6 161.8 NaN% NaN NaN n/a   28.3 kts
20180920T013940 ssmis17_85 188.7 89.5 NaN% NaN NaN n/a   27.2 kts
20180920T043639 gmi_85 55.5 22.8 NaN% NaN NaN n/a   24.1 kts
20180920T110929 ssmis16_85 299.7 145.1 NaN% NaN NaN n/a   20.5 kts
20180920T132843 ssmis18_85 321.9 156.2 NaN% NaN NaN n/a   20.0 kts
20180920T140746 ssmis17_85 321.9 156.2 NaN% NaN NaN n/a   20.0 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).