Weather Maps Mr. Bradley's

Weather Maps

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Pressure Pattern

The pressure pattern will always show you a number of things – we always have areas of high pressure (H) and areas of low pressure (L) and the white lines that circulate around, show where the pressure is equal. They are called isobars.

What is high and low pressure?

A high pressure system is a condition where the pressure in the atmosphere is higher than the surrounding area. A low pressure system On the other hand, a low pressure system is a condition in which the pressure in the atmosphere is lower than the pressure on the surface of the earth.

How does air move from region to region?

When air moves from areas of high pressure to area of low pressure and try and maintain that balance or to try and ease that difference, than there is air moving around and we feel wind moving.

How is weather data collected?

Meteorologists must look at data that come from different sources. Meteorologist use many kinds of advanced technologies to gather this data. These technologies are found at ground stations and in balloons, aircraft, and satellites.

Weather balloons

Weather balloons are the primary source of data above the ground. They provide valuable input for computer forecast models, local data for meteorologists to make forecasts and predict storms, and data for research.

Ground Stations

Land-based observations are collected from instruments sited at locations on every continent. They include temperature, dew point, relative humidity, precipitation, wind speed and direction, visibility, atmospheric pressure, and types of weather occurrences such as hail, fog, and thunder.

Radar for weather

Land-based observations are collected from instruments sited at locations on every continent. They include temperature, dew point, relative humidity, precipitation, wind speed and direction, visibility, atmospheric pressure, and types of weather occurrences such as hail, fog, and thunder.

This symbol points in the direction of air movement. It is likely to get colder as the cold front moves across.

Warm Front

Warm Front

A warm front is a boundary between two air masses, one cool and the other warm, moving so that the warmer air replaces the cooler air. A warm front is represented as a red line with half circles pointing toward the direction on movement.

Multiple Choice

What does this weather symbol mean?

• Rain

• Thunderstorm

• Partly Cloudy

• Sunny

Multiple Choice

What does this image represent?

• sunny

• Thunderstorms

• Rain

• Partly cloudy

Multiple Choice

What does the following weather symbol represent?

• Sunny with clear skies

• Partly cloudy

• Overcast

Multiple Choice

What does the following weather symbol represent?

• Sunny with clear skies

• Partly cloudy

• Overcast

Multiple Choice

What instrument is used to measure temperature?

• Thermometer

• Rain Gauge

• Wind Sock

Multiple Choice

A ___________________ studies weather and predicts upcoming changes in the weather.

• meteorologist

• astronaut

Multiple Choice

Knowing what the temperature will be helps people decide what to _____________.

• wear

• eat

Multiple Choice

Scientists use many ___________ to find weather patterns and forecast how weather will change.

• tools

• books

Multiple Choice

High Pressure is associated with this type of weather...

• Cloudy/Overcast Weather
• Cold Weather
• Warm Weather
• Fair Weather

Multiple Choice

• High Pressure
• Warm Front
• Cold Front
• Mountains

What are the effect of low pressure?

Vertical air is drawn in the middle of low pressure area because air is “lighter”. Winds move toward low pressure and counter clockwise. In horizontal air is moving into the low. Usually associated with cloudy and breezy condition. Precipitation accompany many low pressure systems.

Multiple Choice

How is weather data collected?

• Someone sends an email

• Meteorologists use ground station, balloons, aircraft, and satellites.

• Space crafts

• Everybody waits to here from Mr. Bradley for weather.