Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20200122T191639 gmi_85 111.0 50.6 17.8% 0.0 -0.0 n/a   35.0 kts
20200122T230733 ssmis16_85 333.0 150.7 NaN% NaN NaN n/a   35.0 kts
20200123T003117 ssmis18_85 55.5 28.4 12.3% 8.6 -8.6 n/a   34.6 kts
20200123T011403 ssmis17_85 66.6 28.4 0.0% 3.4 -3.4 n/a   34.0 kts
20200123T113833 ssmis16_85 222.0 106.2 0.0% 1.2 -1.2 n/a   25.3 kts
20200123T134430 ssmis17_85 310.8 150.7 NaN% NaN NaN n/a   25.0 kts
20200123T202927 amsr2_85 210.9 100.6 9.6% 3.0 -3.0 n/a   25.0 kts
20200123T225559 ssmis16_85 299.7 145.1 NaN% NaN NaN n/a   25.0 kts
20200124T002015 ssmis18_85 177.6 83.9 8.2% 3.4 -3.4 n/a   25.0 kts
20200124T010213 ssmis17_85 255.3 122.9 NaN% NaN NaN 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).