Weather Service Forecast Office. Knowing how to read a weather map can help you understand the weather and know what to expect.
Use the alphabetical index below or scroll through the entire list.
What does h stand for on a weather map. For example this type of map will show an outline of the United States along with colored lines and symbols representing pressure systems. What it Means on the Weather Map Low pressure systemslike this one in the Tennessee valleycan cause the formation of clouds and storms. When the term is applied to a particular weather system it refers to the highest one-minute average wind at an elevation of 10 meters with an unobstructed exposure associated with that weather system at a particular point in time.
H and L on weather maps called high and low pressure centers indicate the locations of areas of relative highest and lowest air pressure. The cone on the map indicates the potential path of the storm and it indicates the uncertainty of where the storm is headed. There are High Pressure centers over Colorado Washington and Alabama.
This information often comes in the form of a weather map such as a surface analysis map. A hurricane has the. Theres a Low Pressure center over Minnesota.
For example high pressure H areas will have clear skies while low pressure L areas can be stormy. Contained in this document is a list of abbreviations and acronyms which may appear in Weather Prediction Center WPC discussions. Weather Surveillance Radar 1988 Doppler.
On weather maps these readings are represented as a blue H for high pressure or a red L for low pressure. Either a 9 or a 10 is. Follow along with us on the latest weather were watching the threats it may bring and check out the extended forecast each day to be prepared.
The capital letter H. A Stationary Front extends across the Mid-Atlantic States and into the Midwest. Unlocking the Mystery of the WatchWarningAdvisory Web Map E ver want to know how to interpret the color codes on the Watch Warning Advisory and PointClick map that resides below the weatherataglance graphics graphicasts.
Weather Prediction Center formerly HPC WPDN. Time indicated on the weather map and the 2 digit underlined number indicates its expected previous center pressure. The L and H icons on weather maps represent respectively areas of relative low air pressure cyclones in meteorological parlance and high air pressure.
What follows is a comprehensive list of the color codes associated text product codes and the meaning of each watch warning. Weather Information Applications Branch. Wind Profiler Demonstration Network.
Weather maps are frequently covered in lines and symbols that indicate very useful information if you know what they mean. H stands for a high-pressure system and L stands for a low-pressure system. To be assumed in front of the 2 digits.
Reading a Weather Forecast. Here is a typical weather map with satellite and radar overlays. What Do Those Map Colors Mean.
Weather Map Symbols Abbreviations and Features. Blue cold front lines bring rain and wind in the direction the triangular marks point.