Interpreting A Synoptic Chart

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| By Lauravertigan

Lauravertigan

Community Contributor

Quizzes Created: 4 | Total Attempts: 5,303

Questions: 9 | Attempts: 899 | Updated: Mar 22, 2023

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How to forecast weather using a synoptic chart

Questions and Answers

1.

The synoptic chart shows information that can be used to forecast the weather. This can be difficult, because there are a lot of different things that influence the weather. Even the experts sometimes get it wrong! There are a few rules that help. Rule 1: Highs normally mean hot days and cool nights in summer, and mild days and cold nights in winter. There will be light, or no wind, and clear skies. Lows mean stormy weather - strong winds, cloudy skies and rain, and usually mild temperatures. Rule 2: A cold front means a rapid drop in temperature and brings strong winds (and often rain) Rule 3: Isobars close together mean there are strong winds (because the air pressure is changing more rapidly in these areas) Rule 4: In the southern hemisphere, the rotation of the earth causes air to flow clockwise around low pressure cells, and anticlockwise around high pressure cells.
2.

Using these rules, forecast the weather conditions at Brisbane
3.

Using these rules, forecast the weather conditions at Melbourne
4.

Using these rules, forecast the weather conditions at Adelaide
5.

Cyclones are intense low pressure systems in the tropics associated with very strong winds. Cyclones form over oceans and sometimes cause great damage when they reach land. Describe the location of the tropical cyclone on the above map.
6.

The air pressure at the centre of this cyclone is
- A.
  
  1012 hPa
- B.
  
  1020 hPa
- C.
  
  980 hPa
- D.
  
  1000 hPa
Correct Answer
C. 980 hPa

Explanation
The air pressure at the center of a cyclone is usually lower than the surrounding areas. This is because the air in a cyclone rises rapidly, creating a low-pressure system. The lower the air pressure, the stronger the cyclone. Therefore, a pressure of 980 hPa indicates a strong cyclone at its center.

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7.

Re-write rule 4 to apply to the northern hemisphere
8.

Natural features on the land can have an impact on weather and climate
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Natural features on the land, such as mountains, bodies of water, and vegetation, can indeed have an impact on weather and climate. These features can influence the movement of air masses, the formation of clouds, and the distribution of rainfall. For example, mountains can cause air to rise, cool, and release moisture, leading to increased rainfall on one side and a rain shadow effect on the other side. Bodies of water can moderate temperatures and create local breezes. Vegetation can affect evaporation rates and the amount of moisture in the air. Therefore, it is true that natural features on the land can have an impact on weather and climate.

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9.

Cyclones are linked with extremely high air pressures
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Cyclones are actually linked with low air pressures, not high air pressures. In a cyclone, air spirals inward towards a center of low pressure, causing strong winds and stormy weather. This low pressure system is the opposite of high air pressure, which is associated with fair weather conditions. Therefore, the statement that cyclones are linked with extremely high air pressures is false.

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10.

The weather in Perth on this day is likely to be fine
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The given statement suggests that the weather in Perth on this day is expected to be good or pleasant. This implies that there are no indications of any adverse weather conditions such as rain, storms, or extreme temperatures. Therefore, the answer "True" indicates that the weather in Perth is likely to be fine on this day.

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Interpreting A Synoptic Chart

Using these rules, forecast the weather conditions at Brisbane

Using these rules, forecast the weather conditions at Melbourne

Using these rules, forecast the weather conditions at Adelaide

Cyclones are intense low pressure systems in the tropics associated with very strong winds. Cyclones form over oceans and sometimes cause great damage when they reach land. Describe the location of the tropical cyclone on the above map.

The air pressure at the centre of this cyclone is

Re-write rule 4 to apply to the northern hemisphere

Natural features on the land can have an impact on weather and climate

Cyclones are linked with extremely high air pressures

The weather in Perth on this day is likely to be fine