Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20240917T172941 amsr2_85 177.6 83.9 9.2% 4.7 -4.7 n/a   25.0 kts
20240918T060054 amsr2_85 177.6 111.7 5.5% 3.8 -3.8 n/a   25.0 kts
20240918T113855 gmi_85 99.9 45.0 8.2% 1.5 -1.5 n/a   25.0 kts
20240918T181304 amsr2_85 22.2 6.1 NaN% NaN NaN n/a   30.0 kts
20240918T223517 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20240918T230855 gmi_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20240919T064359 amsr2_85 144.3 67.3 NaN% NaN NaN n/a   30.0 kts
20240919T084402 ssmis18_85 122.1 56.1 NaN% NaN NaN n/a   30.0 kts
20240919T110102 ssmis16_85 66.6 28.4 NaN% NaN NaN n/a   28.9 kts
20240919T112843 ssmis17_85 55.5 22.8 NaN% NaN NaN n/a   28.6 kts
20240919T185611 amsr2_85 33.3 11.7 0.0% 0.0 -0.0 n/a   24.6 kts
20240919T211945 ssmis18_85 177.6 83.9 NaN% NaN NaN n/a   23.6 kts
20240919T222855 gmi_85 333.0 161.8 NaN% NaN NaN n/a   23.1 kts
20240919T233520 ssmis16_85 122.1 56.1 0.0% 0.0 -0.0 n/a   22.7 kts
20240920T083206 ssmis18_85 321.9 156.2 NaN% NaN NaN n/a   20.0 kts
20240920T104754 ssmis16_85 310.8 150.7 NaN% NaN NaN n/a   20.0 kts
20240920T111447 ssmis17_85 133.2 61.7 0.0% 1.2 -1.2 n/a   20.0 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).