| A | B |
|---|
| maritime polar-mP | originates over the N. Pacific Ocean; very moist but not extremely cold |
| maritime tropical-mT | forms over the warm waters of the Gulf of Mexico and the Tropical North Atlantic Ocean |
| continental polar - cP | forms in northern Canada |
| continental tropical - cT | forms over deserts of northern Mexico and southwestern United States |
| cold front | when a cold air mass overtakes a warm air mass |
| warm front | when a warm air mass overtakes a cooler air mass |
| cyclone | storm that spirals inward toward a low -pressure center |
| anticyclone | storm that spirals outward from a high-pressure center |
| thermometer | instrument used to measure temperature |
| anemometer | instrument used to measure wind speed |
| wind vane | instrument used to measure wind direction |
| barometer | instrument used to measure atmospheric pressure |
| psychrometer | instrument used to measure relative humidity |
| rain gauge | instrument used to measure precipitation |
| radiosonde | instrument used to measure upper atmospheric conditions |
| What is a station model ? | a cluster of symbols shown on a map around the reporting station showing conditions at that station |
| What conditions are shown on a station model? | cloud cover, wind speed and direction, type of precipitation & storm activity, temperature, dew pt., atmospheric pressure |
| What do meteorologists use to make a weather map? | information from station models all over the US |
