Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20231008T170114 gmi_85 266.4 33.9 0.0% 2.2 -2.2 n/a   30.0 kts
20231008T201316 amsr2_85 122.1 78.4 26.0% 12.0 -12.0 n/a   31.9 kts
20231008T222251 ssmis18_85 99.9 45.0 17.8% 3.1 -3.1 n/a   33.7 kts
20231009T001522 ssmis16_85 144.3 72.8 35.6% 9.0 -9.0 n/a   35.4 kts
20231009T061614 gmi_85 333.0 161.8 NaN% NaN NaN n/a   45.2 kts
20231009T082609 amsr2_85 144.3 61.7 27.4% 8.7 -8.7 n/a   47.0 kts
20231009T105721 ssmis18_85 33.3 11.7 68.5% 5.6 -5.6 n/a   49.1 kts
20231009T124959 ssmis16_85 33.3 11.7 50.7% 7.7 -7.7 n/a   50.7 kts
20231009T221002 ssmis18_85 33.3 11.7 0.0% 7.8 -7.8 n/a   41.1 kts
20231010T000229 ssmis16_85 188.7 39.5 15.1% 1.2 -1.2 n/a   34.9 kts
20231010T012256 ssmis17_85 33.3 161.8 NaN% NaN NaN n/a   32.7 kts
20231010T052615 gmi_85 144.3 67.3 NaN% NaN NaN n/a   28.6 kts
20231010T104332 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   25.7 kts
20231010T123609 ssmis16_85 199.8 95.1 0.0% 1.4 -1.4 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).