En esta composicion AMSU, en su canal 7 se ve claramente sobre los 200 mb esa anomalia calida:

CIMSS/NESDIS-USAF/NRL AMSU TC Intensity Estimation:
INVEST 96L
Monday 07sep09 Time: 1527 UTC
Latitude: 12.06 Longitude: -22.54
Storm position corresponds to AMSU-A FOV 24 [1<--->30]
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| Estimated MSLP: 1001 hPa
| Estimated Maximum Sustained Wind: 44 kts
| Estimate Confidence: Good ( +/- 5mb +/- 7 kts )
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Channel 8 (~150 hPa) Tb Anomaly: 0.47
Channel 7 (~250 hPa) Tb Anomaly: 0.71 RMW: 111 km
RMW Source is: TPC
Environmental Pressure: 1010 (TPC)
Satellite: NOAA-18
ATCF data for Month: 09 Day: 07 Time (UTC): 1200