1. High Pressure vs. Low Pressure

2. H is for “HIGH PRESSURE”
H is for HEAVY
BLUE = COOL
Cool air contracts
Cool air sinks because COOL air is HEAVIER
Sunny but slightly cooler weather
Heavy shoves clouds out of the way
CLEAR SKIES
Pressure increases which makes it heavier

3. L is for “LOW PRESSURE” L is for LIGHTER RED = WARM
Light air/low pressure expands
Warm air rises because warm air is LIGHTER
Often brings rainy weather
Pressure decreases which makes it lighter

4. COLD FRONT Looks like icicles Has air that is HEAVY
A cold front has COLD(cooler), dry, air behind it as it moves forward
When a cold front meets a warm front, it shoves the warm front up higher
Brings THUNDERSTORMS
Pp. 600

5. WARM FRONT Looks like half suns A warm front has warm,
moist air behind it.
When it moves over a cold front, it will rain near the frontal line where the rising air condenses.
Pp. 600

6. Weather Forecasting Sample Forecast: Weather Channel:
Weather Channel: