Weather Forecasting

Although accurate, reliable weather forecasting has defied humans for eons, you can perform a crude form of it by learning to recognize multiple clues and patterns.



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A map of high- and low- pressure areas is useful in weather forecasting. Air circulates away from higher-pressure areas in a clockwise direction. Air moving into a low pressure area circulates in a counterclockwise direction.
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Cumulonimbus: Towering, angry-looking, billowing cloud varying from white to dark gray. Weather: The severe weather cloud, which may bring high winds and thunderstorms.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Cumulus congestus: Cumulus starting at low altitude, turning gray, billowing, and beginning to develop vertically. Weather: May produce precipitation immediately.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Cirrostratus: High, transparent, white clouds that put a halo around the moon. Weather: Precipitation in 15 to 20 hours if wind is from northeast.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Cumulus: Separated, fluffy, white clouds. Weather: Fair weather unless developing into other cumulus.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Cirrocumulus: High, white layer of puffy or rippled clouds. Weather: Precipitation in 15 to 20 hours if wind is from between northeast and south.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Stratus: Usually lighter gray, low-level, flat layers. Weather: Heavy precipitation if wind is from between northeast and south.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Nimbostratus: Light to dark gray monotonal, low-level cloud layers that obscure the sun. Weather: Precipitation of long duration if wind is from between northeast and south.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Stratocumulus: Light-to dark gray, variable tone, low-level layers. Weather: Precipitation soon.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Cirrus: High, lacy, white ice cloud; often hairy appearance. Weather: Fair if lower-level wind is from west.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Altostratus: Medium-height layer of gray, translucent clouds. Weather: Precipitation in 10 to 15 hours if wind is steady from between northeast and south; overcast for other winds.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION
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Altocumulus: Medium-height, white to light-gray layers. Weather: Precipitation in 10 to 15 hours if wind is steady from between northeast and south.
NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION











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