Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20130224T140834 ssmis18 23.4 100.0% 17.5 -32.5 n/a   36.6 kts
20130224T233522 ssmis17 5.0 8.2% 0.0 -0.0 n/a   40.0 kts
20130225T011852 ssmis18 56.7 57.5% 2.2 -2.2 n/a   39.8 kts
20130225T092357 tmi 212.4 8.2% 2.2 -2.2 n/a   35.6 kts
20130225T102436 ssmis16 34.5 63.0% 0.0 -0.0 n/a   35.2 kts
20130225T132435 ssmis18 NaN 57.5% 0.0 -920.0 n/a   35.0 kts
20130225T232245 ssmis17 45.6 0.0% 1.0 -1.0 n/a   35.0 kts
20130226T001558 tmi 12.2 NaN% NaN NaN n/a   35.0 kts
20130226T010716 ssmis18 78.9 0.0% 5.5 -5.5 n/a   35.0 kts
20130226T082800 tmi 5.0 0.0% 1.7 -1.7 n/a   35.0 kts
20130226T101639 ssmis16 123.4 NaN% NaN NaN n/a   35.0 kts
20130226T134307 ssmis18 23.4 0.0% 1.1 -1.1 n/a   34.7 kts
20130226T204959 ssmi15 179.0 0.0% 0.5 -0.5 n/a   30.9 kts
20130226T230957 ssmis17 56.7 0.0% 0.3 -0.3 n/a   30.1 kts
20130226T231950 tmi 45.6 0.0% 1.1 -1.1 n/a   30.0 kts
20130227T005513 ssmis18 123.4 0.0% 0.0 -0.0 n/a   30.0 kts
20130227T092402 ssmi15 5.0 0.0% 0.4 -0.4 n/a   30.0 kts
20130227T110632 ssmis17 90.1 0.0% 2.0 -2.0 n/a   30.0 kts
20130227T131258 ssmis18 156.8 0.0% 0.5 -0.5 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).