Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20170419T094357 ssmis17_85 122.1 56.1 50.7% 12.4 -12.4 n/a   30.0 kts
20170419T100734 ssmis18_85 144.3 67.3 52.0% 11.6 -11.6 n/a   30.0 kts
20170419T170847 ssmi15_85 199.8 72.8 1.4% 1.8 -1.8 n/a   30.0 kts
20170419T174212 ssmis16_85 177.6 83.9 NaN% NaN NaN n/a   30.0 kts
20170419T210536 ssmis17_85 22.2 6.1 0.0% 8.2 -8.2 n/a   30.0 kts
20170419T212852 ssmis18_85 66.6 28.4 NaN% NaN NaN n/a   30.0 kts
20170420T053303 ssmi15_85 188.7 89.5 4.1% 8.9 -8.9 n/a   30.0 kts
20170420T065140 gmi_85 333.0 161.8 NaN% NaN NaN n/a   30.0 kts
20170420T092946 ssmis17_85 222.0 33.9 NaN% NaN NaN n/a   30.0 kts
20170420T095404 ssmis18_85 188.7 89.5 NaN% NaN NaN n/a   30.0 kts
20170420T165406 ssmi15_85 55.5 22.8 19.2% 7.2 -7.2 n/a   38.2 kts
20170420T205339 ssmis17_85 144.3 61.7 24.6% 3.5 -3.5 n/a   42.4 kts
20170420T211750 ssmis18_85 88.8 39.5 26.0% 3.9 -3.9 n/a   42.7 kts
20170420T215139 gmi_85 22.2 33.9 0.0% 7.2 -7.2 n/a   43.2 kts
20170421T073139 gmi_85 333.0 161.8 NaN% NaN NaN n/a   45.0 kts
20170421T073413 ssmis16_85 321.9 156.2 NaN% NaN NaN n/a   45.0 kts
20170421T094032 ssmis18_85 310.8 150.7 NaN% NaN NaN n/a   45.0 kts
20170421T185908 ssmis16_85 66.6 28.4 34.2% 0.0 -0.0 n/a   42.8 kts
20170421T210542 ssmis18_85 33.3 11.7 0.0% 3.6 -3.6 n/a   41.6 kts
20170421T223140 gmi_85 321.9 156.2 NaN% NaN NaN n/a   40.8 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).