![]() ![]() For instance, the passage of an upper warm front may bring warmer air at an altitude of 10,000 ft, without bringing a change of air mass at the surface.Ī stationary or slow-moving boundary between two air masses. Upper fronts represent the boundaries between air masses at levels above the surface. Cloud and precipitation becomes increasingly fragmented. Represents a front that is losing its identity, usually due to rising pressure. Represents a front that is forming due to increase in temperature gradient at the surface. Occluded fronts bring cloud and precipitation.ĭeveloping cold/warm front (frontogenesis) Occlusions form when the cold front of a depression catches up with the warm front, lifting the warm air between the fronts into a narrow wedge above the surface. The leading edge of an advancing warmer air mass, the passage of which commonly brings cloud and precipitation followed by increasing temperature and/or humidity. Its passage is usually marked by cloud and precipitation, followed by a drop in temperature and/or humidity. The leading edge of an advancing colder air mass. Shirt, sunscreen and hat are essential.Īvoid being outside during midday hours. Spend time in the shade between 11am and 3pm. Seek shade during midday hours, cover up and wear sunscreen. Take care during midday hours and do not spend too much time in the sun unprotected. The higher the percentage of humidity, the wetter it will feel outside. If there is a lot of water vapour, the humidity will be high. Humidity is the amount of water vapor in the air. Visibility measures the distance at which an object can be clearly seen. Strong winds are shown in bold and represent speeds of 25 knots (or 29 miles per hour) or above. This value represents the highest wind speed that you should encounter at that time, as the winds peak, and then lull again. NNW would indicate a wind blowing from the north northwest. The arrow shows the direction that the wind is blowing, and the letter represents the direction the wind is blowing from (on a standard 16-point compass rose).įor example, an arrow pointing upwards indicates a wind blowing from the south to the north, along with the letter S to indicate that it is a southerly wind. the mean wind speed you may encounter (in reality the wind will strengthen and lull constantly above and below this value). The speed represents the average wind speed expected at that time, i.e. The number in the coloured bars represents the air temperature in the units selected in Settings (Celsius or Fahrenheit) Feels likeįeels like temperature takes into account wind speed and humidity to give a more representative indication of how the temperature will feel. Weather symbolsįor example, a 70% chance of rain represents a 7 in 10 chance that precipitation will fall at some point during that period.Ĭhance of precipitation represents how likely it is that rain (or other precipitation: sleet, snow, hail, drizzle etc.) will fall from the sky at a certain time. If there is a ‘Heavy rain’ symbol at 11:00am on the same day, we expect it will start raining between 10:00am and 11:00am, and it will be raining at 11:00am. So, for example, a ‘Sunny day’ symbol at 10:00am means that we expect there to be sun at 10:00am. The time displayed in the table shows the forecast data for that specific moment in time, on the hour. We provide a long-range 28-day forecast for the UK as a whole, which you can find underneath the forecast table, below the map and flood warnings. The forecast table gives you an overview of the weather forecast at a specific location for the next seven days. ![]()
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