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Barometric Pressure and Weather

The weight of Earth's atmosphere exerts pressure on Earth's surface. The atmosphere is a fluid and flows from one place to another as weather patterns change. Changing weather conditions also cause the atmospheric pressure to change. By
analyzing changes in barometric pressure and observing weather conditions, you
can make weather predictions.

Recognize the Problem

How do changes in barometric pressure help predict weather patterns?
Form a Hypothesis

What is the current barometric pressure where you are? How would you describe the weather today where you are? What is the weather like in the region to the west of you? To the east of you? What will your weather be like tomorrow? By collecting barometric pressure data and observing weather conditions, you will be able to make a prediction about the next day's weather.

Goals

  • Collect barometric pressure and other weather data.

  • Compare barometric pressure to weather conditions.

  • Predict weather patterns based on barometric pressure, wind speed and direction, and visual conditions.

Data Sources
Test Your Hypothesis

Plan

  1. Check the links for information about weather in the region where you live.

  2. Find and record the current barometric pressure and whether the pressure is rising, falling, or remaining steady. Also record the wind speed and direction.

  3. Observe and record other weather conditions, such as whether rain is falling, the Sun is shining, or the sky is cloudy.

  4. Based on the data you collect and your observations, predict what you think tomorrow's weather will be. Record your prediction.

  5. Repeat the data collection and observation for a total of five days.

Do

  1. Make sure your teacher approves your plan before you start.

  2. Check this Web site for links.

Analyze Your Data
  1. Look at your data. What was the weather the day after the barometric pressure increased? The day after the barometric pressure decreased? The day after the barometric pressure was steady?

  2. How accurate were your weather predictions?
Draw Comclusions
  1. What is the weather to the west of you today? How will that affect the weather in your area tomorrow?

  2. What was the weather to the east of you today? How does that compare
    to the weather in your area yesterday?

  3. How does increasing, decreasing, or steady barometric pressure affect the weather?

Post Your Data

Results
Barometric Pressure and Weather
Location of weather station
Barometric pressure
Status of barometric pressure
Wind speed
Wind direction
Current weather conditions
Prediction of tomorrow's weather conditions
Location of weather station
Barometric pressure
Status of barometric pressure
Wind speed
Wind direction
Current weather conditions
Prediction of tomorrow's weather conditions
Location of weather station
Barometric pressure
Status of barometric pressure
Wind speed
Wind direction
Current weather conditions
Prediction of tomorrow's weather conditions
Location of weather station
Barometric pressure
Status of barometric pressure
Wind speed
Wind direction
Current weather conditions
Prediction of tomorrow's weather conditions
Location of weather station
Barometric pressure
Status of barometric pressure
Wind speed
Wind direction
Current weather conditions
Prediction of tomorrow's weather conditions
* City (location of weather station):
* State:
* School:
* required