Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20180922T072345 ssmis16_85 144.3 33.9 0.0% 5.8 -5.8 n/a   28.8 kts
20180922T094410 ssmis18_85 177.6 89.5 5.5% 4.5 -4.5 n/a   26.9 kts
20180922T102116 ssmis17_85 22.2 56.1 0.0% 3.7 -3.7 n/a   26.4 kts
20180922T170613 amsr2_85 33.3 11.7 0.0% 4.3 -4.3 n/a   25.0 kts
20180922T205458 ssmis18_85 55.5 28.4 30.1% 7.4 -7.4 n/a   25.0 kts
20180922T213142 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   25.0 kts
20180923T003140 gmi_85 222.0 161.8 NaN% NaN NaN n/a   25.0 kts
20180923T052008 amsr2_85 33.3 11.7 21.9% 7.9 -7.9 n/a   25.0 kts
20180923T071016 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   24.0 kts
20180923T093120 ssmis18_85 133.2 61.7 5.5% 4.0 -4.0 n/a   22.1 kts
20180923T100746 ssmis17_85 144.3 67.3 0.0% 1.5 -1.5 n/a   21.6 kts
20180923T134640 gmi_85 11.1 2.5 0.0% 8.7 -8.7 n/a   20.0 kts
20180923T200158 ssmis16_85 333.0 161.8 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).