Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20171208T192504 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   40.0 kts
20171208T212845 ssmi15_85 99.9 33.9 0.0% 8.4 -8.4 n/a   40.0 kts
20171209T001627 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   39.8 kts
20171209T032640 gmi_85 33.3 50.6 0.0% 3.4 -3.4 n/a   37.1 kts
20171209T075648 amsr2_85 66.6 28.4 0.0% 2.5 -2.5 n/a   35.0 kts
20171209T084052 ssmi15_85 99.9 45.0 NaN% NaN NaN n/a   35.0 kts
20171209T101828 ssmis16_85 55.5 22.8 NaN% NaN NaN n/a   34.3 kts
20171209T125002 ssmis17_85 44.4 17.2 NaN% NaN NaN n/a   32.9 kts
20171209T164139 gmi_85 333.0 161.8 NaN% NaN NaN n/a   30.7 kts
20171209T200730 amsr2_85 33.3 11.7 0.0% 2.3 -2.3 n/a   29.1 kts
20171209T211215 ssmi15_85 33.3 11.7 0.0% 3.2 -3.2 n/a   28.7 kts
20171210T000334 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   27.5 kts
20171210T012244 ssmis17_85 188.7 89.5 NaN% NaN NaN n/a   26.9 kts
20171210T023139 gmi_85 333.0 161.8 NaN% NaN NaN n/a   26.4 kts
20171210T070210 amsr2_85 44.4 17.2 NaN% NaN NaN n/a   25.0 kts
20171210T082534 ssmi15_85 55.5 22.8 NaN% NaN NaN n/a   25.0 kts
20171210T100556 ssmis16_85 244.2 117.3 NaN% NaN NaN n/a   25.0 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).