• Notes for Storms (page 99) & Thunderstorms (p103)• 17.1 and 17.4 RHW Quizzes • Notes for Storms (page 99) & Thunderstorms (p103)• 17.1 and 17.4 RHW Quizzes

• I will be able to:

• Explain how technology helps forecast the weather.

• Analyze weather maps.

• I will be able to:

• Explain how technology helps forecast the weather.

• Analyze weather maps.

• Have 17.4 Notes out.• Have 17.4 Notes out.

Predicting the Weather

Predicting the Weather

Chapter 17 Section 4

Pages 583-589

Chapter 17 Section 4

Pages 583-589

• Your own Weather Forecasting– You can make your own predictions based on

your own observations.• Changing air pressure- You can expect a change

in the weather.– Falling pressure (Low)- might bring rainy weather– Rising pressure (high)- clear weather

• Clouds are a sign too.– Cumulonimbus- thunderstorms.– Cirrus- Low pressure might be approaching

Objective: I will be able to describe how technology helps predict weather.

• Weather Forecasting:• Meteorologists- are scientists who study

the causes of weather and try to predict it.– Interpret information from various sources

• Local weather observers.• Weather balloons.• Weather stations.• Weather Radar.• Satellites

– Computers analyze data and help prepare forecasts

Objective: I will be able to describe how technology helps predict weather.

• Weather Technology– Changes in technology

• Gathering Data• Computers Analyzing

Data

– Have made:• Short day forecasts for

up to 5 days are more reliable.

• Long range forecasts possible

Objective: I will be able to describe how technology helps predict weather.

• Weather Balloons– Carry a radiosonde-

high into the troposphere and stratosphere.

• Measures:– Air Pressure– Temperature– Humidity

Objective: I will be able to describe how technology helps predict weather.

• Doppler Weather Radar– Used to find the

location, movement and intensity of precipitation.

– Can detect what form of precipitation a weather system is carrying.

Objective: I will be able to describe how technology helps predict weather.

• Weather Satellites– First weather satellite

was launched in 1960.– Cameras on satellites

in the exosphere photograph:

• Earth’s surface• Clouds• Storms• Ice and Snow Cover

Objective: I will be able to describe how technology helps predict weather.

• Computer Forecasts– Widely used to help

forecast weather.

– Computers process the large amounts of data gathered quickly to help forecasters make predictions.

Objective: I will be able to describe how technology helps predict weather.

• Computer Forecasts– 1. Gathers reported conditions from weather

stations.

– 2. Works through thousands of calculations.• Surface conditions, temp, air pressure, wind speed

and direction and sunlight.

– 3. Revises forecasts with new data• Creates 12hr, 24hr, 36hr forecasts

Objective: I will be able to describe how technology helps predict weather.

• Weather Maps– A weather map is a “snapshot” of conditions

at a particular time over a large area.

– Generated by computers and radar information.

Objective: I will be able to analyze weather maps.

• National Weather Service Maps– Data from over 300 local weather stations

over the country is assembled into weather maps at the NWS.

– Information is converted into a Station Model.

381018

34

Temperature

Dew PointAir Pressure

(millibars)

Wind Speed(9-14mph)Wind Direction

(Northwest)

Cloud Cover(50%)

Objective: I will be able to analyze weather maps.

On your paper- flip # 38 & 34 so that temp is 38 and dew pt is 34

• National Weather Service Maps– Curvy lines are drawn

where temperature and air pressure are equal (iso).

• Isobars- lines of equal air pressure. (inches of Hg or millibars)

• Isotherms-lines of equal temperature. °F or °C.

Objective: I will be able to analyze weather maps.

Objective: I will be able to analyze weather maps.

• News Paper Maps– Simplified versions of

NWS maps for the general public.

– Standard Symbols• Fronts• Areas of High and Lower

Pressure• Precipitation• Temperatures

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to analyze weather maps.

• TV News– Information is

received from the National Weather Service or AccuWeather.

– Presented in a format the general public can understand.

Objective: I will be able to describe how technology helps predict weather.

• TV News– Typical Format:

• Current Conditions• Weather Across the

Local Area– Visible Cloud Satellite

and Doppler Radar

• Weather Across the Country

– Visible Cloud Satellite and US Doppler Radar

• Five Day Forecast– High/Low Temps– Weather Conditions

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.

Objective: I will be able to describe how technology helps predict weather.