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SPC Hand Analysis Example (Online Tornado FAQ)
SPC Hand Analysis Example

SPC Hand Analysis Example

Despite the powerful computers, there is no substitute for drawing weather maps by hand for making a forecaster take the time to thoroughly understand the ongoing weather situation. And without knowing the intricate details of what's happening now, a forecast can suffer. So SPC forecasters routinely draw -- by hand -- surface and upper air features on printed maps, many times per day. This is a piece of a surface map containing lows and warm fronts (bright red), highs and cold fronts (blue), outflow boundaries (purple dash-dot), pressure troughs and isobars (dark gray), isotherms and warm spots for temperature (dark red), isodrosotherms and moist spots for dew point (green), a dryline (dark brown), and finally, snapshots of wind flow called streamlines (tan). It may look like a jumbled mess, bad food or abstract art; but to a severe storms meteorologist, it is stuffed with useful information.

THE ONLINE TORNADO FAQ

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