Shear Lines, Fronts
and
Areas of Confluence/Diffluence

Shearlines vs. Fronts

Wind Confluence and Diffluence
in the Caribbean

Wind Confluence and Diffluence
in South America

Wind Divergence

Divergence of the Wind

Divergence (Cont)

Example Directional Diffluence/Confluence

Speed
Diffluence/Confluence

Convergent or Divergent?

Convergent or Divergent?

Convergent or Divergent?

Convergent or Divergent?

Evaluation of Shear Lines

Front/Shear Line Evaluation

Slide 16

Slide 17

Slide 18

Slide 19

Forecast Hints

Example of “Ideal” Conditions for Heavy Rainfall

Example Front/Shear Line Caribbean

Example Front/Shear Line South America

Identify Features

Satellite Interpretation

Analysis

Analysis