What do the symbols on a weather chart mean?
Table of Contents
What do the symbols on a weather chart mean?
The large letters (Blue H’s and red L’s) on weather maps indicate high- and low-pressure centers. They mark where the air pressure is highest and lowest relative to the surrounding air and are often labeled with a three- or four-digit pressure reading in millibars.
What are the symbols for weather forecast?
Weather symbols
| Clear night | Sunny day | Partly cloudy (night) |
|---|---|---|
| Cloudy | Overcast | Light rain shower (night) |
| Light rain shower (day) | Drizzle | Light rain |
| Heavy rain shower (night) | Heavy rain shower (day) | Heavy rain |
| Sleet shower (night) | Sleet shower (day) | Sleet |
How do you read wind forecast symbols?
The dot end of the staff is where the wind is blowing to, while the top of the staff shows the direction from which the wind is coming. The top row of wind barbs in the figure to the right all indicate a north wind. The dot is to the south and the top of the wind barb staff is to the north.
How do you read a forecast?
The higher number is the forecast maximum temperature for the day. The lower number is the minimum temperature. Take note of the forecast weather conditions. Symbols like sunshine or lightning are self-explanatory.
What are the squiggly lines on weather forecast?
These are also called front line boundaries, and they represent the line of separation between hot and cold air masses which are present in either high or low pressure areas.
What do wind symbols mean?
Wind speed. A combination of long/short barbs and pennants indicate the speed of the wind in station weather plots rounded to the nearest 5 knots. Calm wind is indicated by a large circle drawn around the skycover symbol. One long barb is used to indicate each 10 knots with the short barb representing 5 knots.
What do squiggly lines mean?
Wavy line (squiggly line): A symbol (shown below) which means (1) “molecular structure beyond this point unspecified or unimportant”, or (2) a mixture of isomers at this point. The wavy line (squiggly line) symbol.
What is the squiggly symbol on the weather?
The ~ (also known as a tilde) is a mathematical symbol that indicates “approximately”.
How do you explain weather forecast?
A weather forecast is made up of three steps: observation and analysis, extrapolation to determine the state of the atmosphere in the future, and estimation of specific variables. One method of qualitative extrapolation is to conclude the weather features will continue to travel in the same direction as they have been.
What does three squiggly lines mean in weather?
fog
The weather symbol that shows a cloud with three lines under means fog.
What are the 4 parts of an area forecast?
Area forecasts are regional forecasts. Area Forecast Coverage. Area Forecast Coverage.
What does OCNL mean in weather?
Occasional
Yes, Ocnl = Occasional, Lkly = Likely, Chc = Chance, & Schc = Slight chance.
How do you read a weather forecast degree?
Some common markers:
- 37 degrees Celsius (98.6 degrees Fahrenheit) corresponds to normal body temperature.
- 22.2 degrees Celsius (72 degrees Fahrenheit) represents the “ideal” room temperature.
- 0 degrees Celsius (32 degrees Fahrenheit) is the melting point of ice.
