SkyStef's weather page
Showalter map bottom right = white lines with values in wet bulb potential temperatures (deg C).
Jetstream map upper right = speed values in color (m/s) + direction via arrows at 300 hPa.
Critical values for Showalter Index: (not to be used with frontal
inversion between 850-500 hPa)
A little explanation where to find these zones:
Jet streaks pull in air upstream (to their west) in what is called the entrance region and throw it out downstream (to their east) in what is called exit region. They are further subdivided in a left or right zone as shown on the picture.
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