- tornadoes . . .
- lightning . . .
- storms . . .
- clouds . . .
- northern lights . . .
- rainbows . . .
- abstracts . . .
- An approaching squall line with gust front and straight shelf cloud
watermarked image
- W003663Z
- An approaching squall line with gust front and straight shelf cloud along the wind shift. Pockets of rising air in the broad lifting zone ahead of the line are forming showers, with a heavier one at right. These and growing clouds migrate along the axis toward the right, eventually merging with it and dropping heavy rain behind the forward edge of the colder air.
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