Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20170717T170513 amsr2_85 111.0 50.6 0.0% 6.2 -6.2 n/a   35.0 kts
20170717T212640 ssmis18_85 266.4 128.4 0.0% 8.5 -8.5 n/a   37.9 kts
20170717T212801 ssmis17_85 255.3 122.9 0.0% 10.0 -10.0 n/a   37.9 kts
20170718T052035 amsr2_85 22.2 6.1 23.3% 0.0 -0.0 n/a   44.5 kts
20170718T100455 ssmis18_85 111.0 50.6 26.0% 6.1 -6.1 n/a   41.6 kts
20170718T100547 ssmis17_85 144.3 67.3 21.9% 6.9 -6.9 n/a   41.6 kts
20170718T182213 ssmi15_85 166.5 78.4 16.4% 3.6 -3.6 n/a   35.0 kts
20170718T195144 ssmis16_85 33.3 11.7 0.0% 5.3 -5.3 n/a   35.0 kts
20170719T070140 gmi_85 333.0 161.8 NaN% NaN NaN n/a   35.0 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).