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Such maps have been in use since the mid-19th century and are used for research and weather forecasting purposes. Maps using isotherms show temperature gradients, [2] which can help locate weather fronts. Isotach maps, analyzing lines of equal wind speed, [3] on a constant pressure surface of 300 or 250 hPa show where the jet stream is located.
Get the Harrisburg, PA local weather forecast by the hour and the next 10 days. ... Snowfall maps, current alerts, weather warnings, ice forecasts, power outages ... The most active day for ...
Get the Harrisburg, PA local weather forecast by the hour and the next 10 days.
The Weather Prediction Center (WPC), located in College Park, Maryland, is one of nine service centers under the umbrella of the National Centers for Environmental Prediction (NCEP), a part of the National Weather Service (NWS), which in turn is part of the National Oceanic and Atmospheric Administration (NOAA) of the U.S. Government.
Date/Time Thumbnail Dimensions User Comment; current: 15:45, 27 April 2018: 600 × 400 (79 KB): Colin Fredericks: Should be visually identical to the original. In the source code, the states have been alphabetized, and css classes have been added so that it's easier to color specific regions (as per US census regions and some others).
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Blank US Map (states only) 2.svg (More detailed outlines, different layout) Other blank US maps: Blank USA, w territories.svg (Includes territories such as Puerto Rico and Guam) Blank USA, w territories 2.svg (Includes territories but in more realistic locations) USA blank.svg (Alaska and Hawaii at full size)