Create new GFS plots for SWIFT catalogue

[tdjames1]

• Black Vectors=925hpA, red vectors=700 hPa (p2) [or better “vector of max shear” between surface to 800hPa and 700 to 500 hPa, negating need for plot below]
• Black Vectors=850hpA, red vectors=600 hPa(p2)
• GFS summary: Colour =CAPE , labelled Lines=TCWV, vectors = shear (2 versions for above level pairs) (p2)
• 4 GFS summaries: Colour =CAPE /Li Index/Kindex/Showalter, vectors = shear (2 versions for above level pairs) (p2)
• GFS rain + vectors=shear (p2)

[tdjames1]

CEMAC fork of GFS plotting code: https://github.com/cemac/GFS_plotting/tree/master

[tdjames1]

Done by Alex: https://github.com/earajr/GFS_plotting/commit/4eeb9ccb516296fee654e59b82016dabf5e81668