Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20220123T105506 amsr2_85 188.7 89.5 29.7% 8.1 -8.1 n/a   35.0 kts
20220123T154844 ssmis17_85 122.1 56.1 23.3% 2.4 -2.4 n/a   38.2 kts
20220123T224519 gmi_85 77.7 83.9 37.0% 1.3 -1.3 n/a   44.0 kts
20220124T005122 ssmis18_85 155.4 50.6 21.9% 3.6 -3.6 n/a   45.0 kts
20220124T021403 ssmis16_85 144.3 67.3 20.6% 6.9 -6.9 n/a   45.0 kts
20220124T132655 ssmis18_85 44.4 128.4 NaN% NaN NaN n/a   45.0 kts
20220124T144920 ssmis16_85 33.3 11.7 69.9% 3.2 -3.2 n/a   45.0 kts
20220125T020120 ssmis16_85 299.7 145.1 NaN% NaN NaN n/a   34.2 kts
20220125T042823 ssmis17_85 333.0 161.8 NaN% NaN NaN n/a   33.1 kts
20220125T143619 ssmis16_85 233.1 111.7 NaN% NaN NaN n/a   30.0 kts
20220125T170312 ssmis17_85 33.3 11.7 34.2% 6.2 -6.2 n/a   30.0 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).