What the map shows
Approaching troughs (falling heights) and building ridges (rising heights).
How to read the colors
Blues for falling heights, reds for rising.
Common mistakes
- Confusing a change map with the pattern itself.
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Learning Center / Model Parameters / Upper Air: Heights, Winds & Temps
12-hr 500 mb Height Change
How much 500 mb heights rise or fall over 12 hours.