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      National Weather Service United States Department of Commerce

      How to Use the New NWS Radar Display

       

      The NWS radar display https://radar.weather.gov/ has been implemented as of Dec 17th, 2020!

      The display has many options, and may take some time to become familiar with it. This is a short tutorial on how to use the interface. See the following images for tips, and read on for more details and familiarization exercises/procedures.

      Here is a link to a ~15 minute video stepping you through most of the tips below: https://youtu.be/5Bcq_t_SvG8

      There is also an FAQ page from the folks who developed the new radar interface.

      If you wish to e:mail the developers, you may use this e:mail address: nws.radarfeedback@noaa.gov.

      Here's a link to our local Central PA (KCCX) radar site. You can bookmark this URL: https://go.usa.gov/xAgBB

           Quick Reference Image:

      New Radar Display Quick Reference Slide

       

           Quick Familiarization Exercises:

      Jump to:
      Single Radar: Navigation: Map settings:

       

       

      Start:

      1. Go to radar.weather.gov
      2. You will be greeted with a national radar mosaic (mosaic = all radar images stitched together) of reflectivity (reflectivity = returned power, a "regular" radar picture)
      3. Here's a link to our local Central PA (KCCX) radar site. You can bookmark this URL: https://go.usa.gov/xAgBB
      radar image

       

      Zoom in/out:

      1. Use the scroll wheel on a mouse
      2. Pinch on a touch screen device
      3. Click the "+" and "-" buttons at the bottom-left of the page
      zoom controls

       

      Pan (slide the map around):

      1. Hold down the left mouse button (MB1) on a PC and drag the map around
      2. Swipe on a touch screen
      mouse left click and drag image

       

      Loop the image:

      1. Press the "Play" button (arrow) at the bottom-left near the (+/-) zoom controls
        1. ?caution! The + and - buttons are zoom controls and do not control the speed of the loop 
      2. The date/time of the image is displayed at the bottom-left next to the loop/play arrow
      loop play_pause button

       

      Center on a specific town/location:

      1. Click in the "Search (magnifying glass)" area
      2. Enter a location
        • The display should re-center on the location
        • The current temperature and an icon which describes the current weather conditions will appear on the left side
        • Clicking the down arrow next to the temperature will display the 7-day forecast for your location
      Search box image

       

      Select a specific/single radar site:

      1. Click on "Select View" (at the very-top left - has an icon which looks like two screens on top of each other)
      2. Click on “Radar Station Products” (not the adjacent down-arrow)
      3. Zoom in/out, pan around, if desired
      4. Select a large purple/blue dot (radar site)
        • The date/time of the most recent image is displayed at the bottom-left next to the loop/play arrow
        • Caution! Clicking once on the radar image/map might unintentionally send you to a different radar site. To pan around, hold the mouse button down.
      5. Here's a link to our local Central PA (KCCX) radar site. You can bookmark this URL: https://go.usa.gov/xAgBB

      change to single radar

       

       

      View different radar data for a single radar site:

      1. Click on the second down-arrow on the top-left -- not the arrow which is directly next to the Radar Site Identifier (KCCX, KPBZ, etc.). This arrow usually has a label of "BREF.RAW" = Super Resolution Base Reflectivity, raw/unfiltered)
      2. Select the type of image/data you wish (ex. "Super Resolution Base Velocity")
      3. The date/time of the most recent image is displayed at the bottom-left next to the loop/play arrow.

      choose different radar data

       

      View more options in single-radar mode:

      1. Click on the triple dots (the "more" button) to the right of the Radar ID/data type/Alert summary
      2. Select from the options there:
        1. ?Weather Hazard / Warning Overlay (ON /OFF)
        2. Transparency ON/OFF:
          1. ?OFF makes it easier to read the data,
          2. ON makes it easier to see the map background and tell where the radar echoes are (see towns, roads, etc.)
        3. ?Ability to select a different single radar site:
          1. ?Turn OFF to prevent accidentally changing to a different radar site when clicking on the map
          2. ON leaves the blue/purple dots on the map to be able to change your view to a new radar site
            • ?Caution! Clicking once on the radar image/map might unintentionally send you to a different radar site. To pan around, hold the mouse button down.

      choose options for a single radar site

       

      Go back to the National Radar Mosaic:

      1. Click the two-screen icon (at the far top-left) to go back to "Select View"
      2. Choose “National Radar Mosaic” (CREF.RAW)
      3. You may also choose from a few other radar data types in the mosaic view, eg. Raw Composite Base Reflectivity
      4. caution! Precipitation type (rain vs. snow, etc.) is based on the type of radar returns which are sampled at the height of the radar beam at that location, and may not accurately reflect the precipitation type occurring at the surface 

      go back to the national view

      ----  then  -----

      more products on the national view

       

      You can BOOKMARK any view you like ! 

      Firm up your settings/preferences (location/zoom/radar image type/data/map background/transparency/loop) before you hit the:

      "bookmark this page" button/feature on your browser. 

      bookmark image

       

      Choose Map Backgrounds:

      1. Press the "menu" button (three stacked lines)
      2. ?choose between any of the options
        1. Hide the menu
        2. Reset the map
          1. Base map backgrounds:
            1. Ocean is a decent mostly-white background 
            2. caution! You may have to turn OFF (or toggle on/off) the TRANSPARENCY to better see the radar data with certain map backgrounds. (see above - single radar display tips)
        3. Choose boundaries to display

      change map and background options

      -- changing transparency in done in single radar mode "more" window --

      choose options for a single radar site

      美高梅4688网址为什么打不开