Regional and Mesoscale Meteorology Branch JPSS for Extratropical Transition

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JPSS for Extratropical Transition

Extra-tropical transition:

The storm structure change
Storm size can increase dramatically
Most often occurs north of ~ 40 N
Can occur down to 20 N in the Atlantic
On average there are ~ 15 TS-ETC per year in all global basins
Storm type could significantly affect forecast, especially when occurring right before the landfall
Changes in storm size and structure during ET are important for forecasting storm impatc (2012 Sandy, 2022 Nicole) and risk mitigation

JPSS data, including ATMS and VIIRS provide model-independent information that can be used to improve storm type classification.

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