Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20170305T180543 ssmi15 23.4 75.3% 0.1 -0.1 n/a   46.7 kts
20170305T212809 ssmis18 23.4 100.0% 21.5 -36.5 n/a   49.4 kts
20170305T214347 ssmis17 23.4 98.6% 14.6 -29.6 n/a   49.5 kts
20170306T064023 ssmi15 12.2 82.2% 0.0 -0.0 n/a   38.3 kts
20170306T092244 ssmis18 34.5 49.3% 17.6 -17.6 n/a   32.4 kts
20170306T093705 ssmis17 45.6 46.6% 15.8 -15.8 n/a   32.1 kts
20170306T100534 ssmis18 34.5 56.2% 19.4 -19.4 n/a   31.4 kts
20170306T175041 ssmi15 5.0 48.0% 4.7 -4.7 n/a   29.4 kts
20170306T194002 ssmis16 45.6 19.2% 0.0 -0.0 n/a   28.5 kts
20170306T213134 ssmis17 212.4 0.0% 1.3 -1.3 n/a   27.2 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).