Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20171027T235453 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20171028T185259 amsr2_85 55.5 22.8 NaN% NaN NaN n/a   35.0 kts
20171028T195617 ssmi15_85 88.8 39.5 NaN% NaN NaN n/a   35.0 kts
20171028T211548 ssmis16_85 299.7 117.3 NaN% NaN NaN n/a   35.0 kts
20171028T234318 ssmis18_85 255.3 111.7 NaN% NaN NaN n/a   35.0 kts
20171028T235739 ssmis17_85 288.6 139.5 NaN% NaN NaN n/a   35.0 kts
20171029T070138 amsr2_85 222.0 106.2 0.0% 7.2 -7.2 n/a   40.9 kts
20171029T082528 ssmi15_85 333.0 161.8 NaN% NaN NaN n/a   42.0 kts
20171029T094614 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   43.1 kts
20171029T121310 ssmis18_85 77.7 33.9 0.0% 3.0 -3.0 n/a   45.2 kts
20171029T122645 ssmis17_85 77.7 33.9 0.0% 5.9 -5.9 n/a   45.4 kts
20171029T175935 amsr2_85 255.3 122.9 NaN% NaN NaN n/a   50.0 kts
20171029T210447 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   50.0 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).