Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning NHC estimate
20210908T192713 amsr2_85 166.5 78.4 9.6% 5.2 -5.2 n/a   32.4 kts
20210908T212416 ssmis16_85 66.6 28.4 NaN% NaN NaN n/a   35.7 kts
20210909T073220 amsr2_85 88.8 39.5 12.3% 1.0 -1.0 n/a   33.7 kts
20210909T093736 ssmis18_85 333.0 161.8 NaN% NaN NaN n/a   32.0 kts
20210909T095122 ssmis16_85 333.0 161.8 NaN% NaN NaN n/a   31.8 kts
20210909T183229 amsr2_85 66.6 22.8 0.0% 2.3 -2.3 n/a   30.0 kts
20210909T205809 ssmis18_85 222.0 106.2 7.7% 8.2 -8.2 n/a   30.0 kts
20210909T211151 ssmis16_85 222.0 100.6 NaN% NaN NaN n/a   30.0 kts
20210909T225412 ssmis17_85 166.5 72.8 2.7% 5.4 -5.4 n/a   30.0 kts
20210910T063625 amsr2_85 55.5 22.8 6.8% 0.0 -0.0 n/a   28.0 kts
20210910T092402 ssmis18_85 55.5 22.8 0.0% 4.2 -4.2 n/a   26.4 kts
20210910T093731 ssmis16_85 66.6 28.4 0.0% 4.4 -4.4 n/a   26.3 kts
20210910T111930 ssmis17_85 144.3 67.3 9.6% 6.2 -6.2 n/a   25.4 kts
20210910T173743 amsr2_85 177.6 83.9 12.3% 5.7 -5.7 n/a   25.0 kts
20210910T204531 ssmis18_85 222.0 106.2 9.1% 6.7 -6.7 n/a   25.0 kts
20210910T205857 ssmis16_85 244.2 117.3 11.0% 6.7 -6.7 n/a   25.0 kts
20210910T224046 ssmis17_85 33.3 11.7 NaN% NaN NaN n/a   25.0 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).