click below
click below
Normal Size Small Size show me how
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 |