Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20140721T222328 ssmis18 34.5 42.5% 1.5 -1.5 n/a   30.0 kts
20140722T014946 tmi 56.7 9.6% 0.6 -0.6 n/a   30.0 kts
20140722T074043 ssmis16 34.5 38.4% 1.3 -1.3 n/a   30.0 kts
20140722T113110 ssmis18 56.7 5.5% 0.3 -0.3 n/a   30.0 kts
20140722T211526 ssmis17 45.6 37.0% 0.2 -0.2 n/a   30.0 kts
20140722T215438 ssmis18 67.8 26.0% 2.4 -2.4 n/a   30.0 kts
20140723T023025 tmi 12.2 41.1% 0.0 -0.0 n/a   30.0 kts
20140723T095202 ssmis17 12.2 0.0% 3.7 -3.7 n/a   30.0 kts
20140723T111842 ssmis18 134.5 13.7% 5.3 -5.3 n/a   30.0 kts
20140723T184135 ssmi15 145.7 1.4% 1.0 -1.0 n/a   24.2 kts
20140723T201927 ssmis16 12.2 37.0% 1.3 -1.3 n/a   18.4 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).