Weather Map

Reading a Weather Map•Meteorologists get information from weather stations

Reading a Weather Map•Weather stations transmit info in symbols

Reading a Weather Map•Symbols tell of:•Temperature•Cloud cover•Wind speed and direction•Air pressure

Reading a Weather Map

Cloud Cover

Wind Speed and Direction

Air Pressure

•Measured in millibars (mbs) or Kilopascals (kPa)• Sea level ~ 1013.2 mbs or 101.32 kPa

Air Pressure• If 1st number is less than 5; add 10• If 1st number is greater than 5; add 9

Air Pressure•Areas of significantly HIGHER pressure = high or anticyclone

•Weather has prolonged calm, clear skies – winds swirl outward

Air Pressure•Areas of significantly LOWER pressure = low or cyclone or depression

•Weather is stormy with winds circulating inward

Weather Map• Like topographic maps

• Pressure shown using isobars

Weather Map•Closer the isobars, the faster the change in pressure

•Greater wind

Fronts• Cold Front

•Warm Front

• Stationary Front

•Occluded Front