Meteorology question: Cloud direction vs wind direction?

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SUMMARY

The discussion centers on the relationship between wind direction and cloud movement, highlighting that the wind direction reported by weather.com may differ significantly from the direction of cloud movement. Specifically, the user notes instances where ground-level wind from the northwest contrasts with storm clouds moving from the southeast. This discrepancy is attributed to factors such as altitude differences, the Coriolis effect, and surface drag from ground obstacles, which can cause surface winds to turn towards low-pressure areas. The user seeks to understand the directional relationship between surface winds and upper-atmospheric winds, particularly in the context of the northern hemisphere.

PREREQUISITES
  • Understanding of the Coriolis effect in meteorology
  • Knowledge of jet streams and their impact on weather patterns
  • Familiarity with surface wind dynamics and atmospheric pressure systems
  • Basic principles of meteorological reporting and data interpretation
NEXT STEPS
  • Research the Coriolis effect and its influence on wind patterns
  • Study the behavior of jet streams and their role in weather systems
  • Examine the impact of surface drag on wind direction and speed
  • Analyze local weather patterns to observe discrepancies between surface and upper winds
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Meteorology students, weather enthusiasts, and professionals in atmospheric sciences seeking to deepen their understanding of wind dynamics and cloud movement relationships.

BarnRat
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Sometimes, but not always, the wind direction (as given by weather.com for my location) is exactly the opposite of the cloud movement. For example: the wind may be given as NW but the storm clouds are coming out of the SE. Almost always the wind direction given by weather.com is corroborated by the wind vane on the top of my house so I assume that weather.com is giving me the "ground level" wind direction. Am I correct in assuming that the upper atmosphere wind direction can be 180 degrees to the ground direction? I am aware that wind direction and wind speed can be different at different altitudes: jet streams.
 
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Winds circulate around low pressure areas due to the Coriolis effect and other forces. Ground winds are subject to drag due to ground obstacles, this slows it down reducing the Coriolis effect, as a result they turn into the direction of the low pressure and that's the main reason that surface winds have different directions than the upper winds (and hence clouds), but 180 degrees is a bit much, although the jet streams around 30,000 feet have also other, more complex logics.

Question, can you figure out in which direction the surface wind turns, in comparison to the upper winds?
 
Andre said:
Winds circulate around low pressure areas due to the Coriolis effect and other forces. Ground winds are subject to drag due to ground obstacles, this slows it down reducing the Coriolis effect, as a result they turn into the direction of the low pressure and that's the main reason that surface winds have different directions than the upper winds (and hence clouds), but 180 degrees is a bit much.
Thanks. I'll have to think about your answer.

Question, can you figure out in which direction the surface wind turns, in comparison to the upper winds?
Is this intended as a sort of homework question, meaning that the answer is the same for all locations in the northern hemisphere? Or do you want me to try to analyze my local weather/wind patterns?
 
Ah the question is just to stimulate thinking, figuring things out. I could have explained it and I will eventually, if needed. But it's essentially the same on each hemisphere.
 

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