Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
19990911T100700 ssmi13_85 44.4 17.2 48.0% 6.1 6.1 n/a   95.0 kts
19990911T102200 tmi_85 44.4 17.2 21.9% 11.4 11.4 n/a   95.0 kts
19990912T024100 tmi_85 55.5 22.8 43.8% 18.6 18.6 n/a   89.5 kts
19990912T234000 ssmi11_85 66.6 28.4 100.0% 55.6 70.6 >85 kts# 124.4 kts
19990913T011600 ssmi14_85 66.6 28.4 100.0% 65.0 80.0 >85 kts# 127.1 kts
19990913T030400 tmi_85 66.6 28.4 100.0% 58.7 73.7 >85 kts# 130.1 kts
19990913T093100 tmi_85 55.5 22.8 100.0% 51.4 66.4 >85 kts# 135.0 kts
19990913T112300 ssmi13_85 555.0 22.8 100.0% 31.3 46.3 >65 kts   135.0 kts
19990913T121100 ssmi11_85 77.7 28.4 NaN% NaN NaN n/a   134.7 kts
19990913T134700 ssmi14_85 55.5 28.4 100.0% 48.6 63.6 >85 kts# 132.0 kts
19990913T223900 ssmi13_85 55.5 22.8 100.0% 36.0 51.0 >65 kts   117.3 kts
19990914T010500 ssmi14_85 55.5 22.8 100.0% 39.8 54.8 >65 kts   113.2 kts
19990914T111000 ssmi13_85 44.4 28.4 16.7% 25.4 25.4 >65 kts   105.0 kts
19990914T222800 ssmi13_85 99.9 45.0 100.0% 37.7 52.7 >65 kts   113.5 kts
19990915T084000 tmi_85 111.0 50.6 49.3% 22.6 22.6 >65 kts   105.6 kts
19990915T132300 ssmi11_85 111.0 45.0 NaN% NaN NaN n/a   98.8 kts
19990916T004300 ssmi11_85 88.8 39.5 21.9% 15.3 15.3 n/a   90.0 kts
19990916T041400 tmi_85 66.6 28.4 2.7% 10.7 10.7 n/a   90.0 kts
19990916T055100 tmi_85 44.4 45.0 34.2% 1.5 1.5 n/a   90.0 kts
19990916T130800 ssmi11_85 111.0 28.4 NaN% NaN NaN n/a   68.1 kts
19990916T144800 ssmi14_85 555.0 161.8 NaN% NaN NaN n/a   65.3 kts
19990916T220600 ssmi13_85 555.0 156.2 NaN% NaN NaN n/a   53.2 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).