Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20160823T172314 ssmi15 223.5 0.0% 7.4 -7.4 n/a   25.1 kts
20160823T172322 ssmi15 223.5 0.0% 7.1 -7.1 n/a   25.1 kts
20160823T204609 ssmis17 78.9 8.2% 6.3 -6.3 n/a   25.0 kts
20160824T043535 ssmi15 90.1 13.7% 3.7 -3.7 n/a   25.0 kts
20160824T080024 ssmis17 167.9 23.3% 3.2 -3.2 n/a   23.7 kts
20160824T170433 ssmi15 56.7 0.0% 3.1 -3.1 n/a   20.0 kts
20160824T180251 ssmis16 12.2 0.0% 1.9 -1.9 n/a   20.0 kts
20160824T203018 ssmis17 323.5 NaN% NaN NaN n/a   20.0 kts
20160825T042137 ssmi15 56.7 0.0% 1.8 -1.8 n/a   19.2 kts
20160825T074858 ssmis17 23.4 0.0% 0.6 -0.6 n/a   17.6 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).