How To

How to Forecast a Blizzard

Contributor
By eHow Contributing Writer
(8 Ratings)

Knowing when a substantial winter storm is coming can help save lives. Surviving and remaining comfortable during a blizzard takes much preparation and is more possible when you are able to predict that the storm is coming. Knowing how to predict blizzards is an important part of meteorology.

Difficulty: Moderately Easy
Instructions

Things You'll Need:

  • Weather map
  1. Step 1

    Consult a weather map. This map will show you all of the pressure systems in a certain area of the world. Blizzards typically occur in the northern areas of the world, so if you're looking for a blizzard, you should concentrate the bulk of your efforts to these locations, especially those areas in the northern United States and Canada.

  2. Step 2

    Look for a high-pressure system. High-pressure systems are depicted on weather maps as blue circles with capital Ls in them. The existence of a high-pressure system is one of the key weather conditions to create a blizzard.

  3. Step 3

    Look for a low-pressure system. Low-pressure systems are shown on weather maps by red circles with capital Ls in them.

  4. Step 4

    Check to see if a point exists where a high-pressure system is coming into contact with an area of a low-pressure system. If this happens, the circumstances are suitable for a blizzard.

  5. Step 5

    Look for precipitation in the area. In order for there to be a blizzard, there has to be moisture in the air to create snow. The combination of the high and low pressure areas will often create enough moisture to make precipitation.

  6. Step 6

    Look for freezing temperatures. The temperature has to be such that the moisture can freeze into snow.

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