Gulf of Alaska Noreaster.

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Presentation transcript:

Gulf of Alaska Noreaster

If lows and highs aloft and at the surface are above one another, the systems will weaken !

Divergence aloft promotes the surface low Convergence aloft promotes the surface high Surface divergence Surface convergence

Longwaves

MIGRATE THROUGH THE LONGWAVE TROUGHS Chapter 10, page 312 Aguado & Burt

1 2 3 Differential temperature advection intensifies the wave Condensation may release even more heat energy for the storm Less upper level divergence No temp advection