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Maddie's Weather
Air mass, fronts, and pressure
| Term | Definition |
|---|---|
| High Air Pressure | Is a whirling mass of cool, dry air that generally brings fair wether & light winds. |
| Low Air Pressure | Is a whirling mass of warm, moist air that generally brings stormy weather & strong winds |
| Air Mass | HUGE bodies of air that form over land or water in tropical or polar regions. |
| Continental Polar (cP) | Form over cold & dry regions. Cold & dry, but not as cold as cA. Form farther south & often dominate the weather picture across the USA during winter. |
| Continental Arctic (cA) | Form exclusively in the arctic & antarctic regions. Extremely cold & very little moisture. |
| Continental Tropical (cT) | Form over deserts & plains. Hot and very dry. |
| Maretime Polar (mP) | Maretime type humidities with cool, moist weather, brings cloudy damp weather |
| Maretime Tropical (mT) | Warm temperatures with lots of moisture |
| Weather Fronts | Contact zones between two different air masses |
| Cold Fronts | The contact boundary of an advancing cold air mass over a stationary warm air mass. Brings cool, fair weather. |
| Warm Fronts | The contact boundary of an advancing warm air mass over a stationary cold air mass. Brings gental rain or light snow followed by warmer, milder weather. |
| Stationary Fronts | Neither of the air masses are advancing over the other. Brings days of clouds & precipitation. |
| Occluded Front | When a cold front over takes warm front. Brings strong winds & heavy precipitation |