Hurricane Karl Sep 2010

Track of Karl

Notation is: L = low, D = depression, S = tropical storm, the cyclone symbol denotes a hurricane.

Wind vectors and contours of the vertical component of relatiove vorticity at selected pressure levels

Contours of relative vorticity: thin contours 2 × 10 ^-5 s^-1 (twice the value of the Coriolis parameter at 20^oN), and 1 × 10 m s^-4 s^-1, thick contours 5 × 10 m s^-4 s^-1 and 1 × 10 m s^-3 s^-1. Positive values red/solid, negative values blue/dashed. Regions with values larger than 2 × 10 ^-5 s^-1 are shaded pink, those with values larger than 2 × 10 ^-5 s^-1 are shaded light blue. Contour interval for zonal wind is 5 m s^-1. Positive values red/solid, negative values blue/dashed. Regions with westerly winds larger than 5 m s^-1 are shaded pink, those with easterly winds larger than 5 m s^-1 are shaded light blue. The blue cyclone symbol marks the minimum geopotential at the corresponding pressure level at the time of the plot shown at the top right of each panel.