Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning NHC estimate
20160618T205005 ssmi15 156.8 0.0% 0.0 -0.0 n/a   30.0 kts
20160619T203453 ssmi15 12.2 39.7% 0.0 -0.0 n/a   30.0 kts
20160620T090618 ssmi15 123.4 NaN% NaN NaN n/a   32.6 kts
20160620T090622 ssmi15 134.5 NaN% NaN NaN n/a   32.6 kts
20160620T101909 ssmis16 156.8 NaN% NaN NaN n/a   33.6 kts
20160620T124701 ssmis17 156.8 45.2% 7.7 -7.7 n/a   35.7 kts
20160620T232640 ssmis17 145.7 9.6% 9.2 -9.2 n/a   35.6 kts
20160621T001231 ssmis17 145.7 8.2% 9.0 -9.0 n/a   34.7 kts
20160621T011456 ssmis18 12.2 31.5% 0.0 -0.0 n/a   33.0 kts
20160621T011628 ssmis18 12.2 23.3% 0.0 -0.0 n/a   33.0 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).