Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20171019T044639 gmi_85 333.0 161.8 NaN% NaN NaN n/a   25.0 kts
20171019T054511 amsr2_85 255.3 122.9 NaN% NaN NaN n/a   25.0 kts
20171019T070157 ssmi15_85 277.5 134.0 NaN% NaN NaN n/a   25.0 kts
20171019T075356 ssmis16_85 233.1 111.7 NaN% NaN NaN n/a   25.0 kts
20171019T101509 ssmis18_85 66.6 28.4 NaN% NaN NaN n/a   24.3 kts
20171019T103738 ssmis17_85 111.0 50.6 0.0% 0.8 -0.8 n/a   24.1 kts
20171019T161639 gmi_85 310.8 150.7 NaN% NaN NaN n/a   21.0 kts
20171019T180023 amsr2_85 33.3 11.7 NaN% NaN NaN n/a   20.0 kts
20171020T045028 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   15.5 kts
20171020T074127 ssmis16_85 210.9 100.6 NaN% NaN NaN n/a   15.0 kts
20171020T102453 ssmis17_85 255.3 122.9 NaN% NaN NaN 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).