Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20210930T210433 amsr2_85 177.6 83.9 34.2% 6.6 -6.6 n/a   42.6 kts
20211001T142952 ssmis17_85 77.7 33.9 38.4% 12.4 12.4 n/a   57.9 kts
20211001T192018 gmi_85 77.7 33.9 24.7% 22.1 22.1 >65 kts   57.2 kts
20211001T214715 amsr2_85 66.6 22.8 100.0% 23.7 38.7 >65 kts   61.3 kts
20211002T030047 ssmis17_85 77.7 33.9 5.5% 11.9 11.9 n/a   62.5 kts
20211002T050519 gmi_85 88.8 22.8 0.0% 11.3 11.3 n/a   60.8 kts
20211002T084344 amsr2_85 33.3 11.7 100.0% 31.2 46.2 >65 kts   60.0 kts
20211002T124412 ssmis16_85 33.3 11.7 100.0% 21.3 36.3 >65 kts   62.1 kts
20211002T141706 ssmis17_85 55.5 22.8 35.6% 4.1 4.1 n/a   62.9 kts
20211003T010631 ssmis18_85 22.2 6.1 0.0% 5.5 5.5 n/a   70.9 kts
20211003T011429 ssmis16_85 22.2 6.1 0.0% 2.9 2.9 n/a   71.0 kts
20211003T024735 ssmis17_85 188.7 89.5 41.8% 8.5 8.5 n/a   72.3 kts
20211003T092647 amsr2_85 22.2 6.1 35.6% 3.4 3.4 n/a   73.6 kts
20211003T122328 ssmis18_85 199.8 95.1 25.8% 0.0 0.0 n/a   72.3 kts
20211003T123114 ssmis16_85 188.7 89.5 13.2% 0.0 0.0 n/a   72.3 kts
20211003T140359 ssmis17_85 188.7 89.5 12.7% 2.9 2.9 n/a   71.6 kts
20211003T213506 amsr2_85 44.4 17.2 67.1% 0.0 0.0 n/a   64.0 kts
20211004T005351 ssmis18_85 33.3 11.7 100.0% 12.2 27.2 >65 kts   58.5 kts
20211004T010145 ssmis16_85 22.2 6.1 67.1% 6.1 6.1 n/a   58.3 kts
20211004T023421 ssmis17_85 33.3 11.7 34.2% 7.2 7.2 n/a   55.7 kts
20211004T121003 ssmis18_85 144.3 67.3 NaN% NaN NaN n/a   44.9 kts
20211004T121808 ssmis16_85 33.3 11.7 0.0% 1.3 -1.3 n/a   44.7 kts
20211004T221825 amsr2_85 44.4 17.2 0.0% 1.2 -1.2 n/a   36.4 kts
20211005T004145 ssmis18_85 77.7 33.9 0.0% 0.6 -0.6 n/a   34.4 kts
20211005T004912 ssmis16_85 22.2 6.1 0.0% 0.5 -0.5 n/a   34.3 kts
20211005T091416 amsr2_85 333.0 161.8 NaN% NaN NaN n/a   30.0 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).