Shapefiles

Product Description Abstract: These polygon shape files depict areas where thunderstorm activity is forecast to occur during each of the next 1, 2, …, 23 hours. The forecasts are created by DTN meteorologists, and are updated every hour. Purpose: These shapefiles can be used for flight planning, airport and helicopter operations, and other applications impacted by the

Product Description Abstract: These polygon shapefiles contains a contoured analysis of forecast cloud ceiling heights valid at 1, 2, …, 23 hours into the future for North America. Forecasts are generated from modeled weather data, and are updated every hour. Purpose: These shapefiles can be used to plan flight routes and manage aircraft around visibility threats. Description: Cloud

Product Description Abstract: This worldwide point shapefile represents known locations of active and inactive volcanoes. It is produced by DTN meteorologists and updated once a day. Purpose: This shapefile can be used to plan flight routes and manage aircraft around volcano threats. Description: This worldwide point shapefile contains known locations and names of active and inactive volcanoes. This

Product Description Abstract: This polygon shapefile represents potential area of ash generated by active volcanoes around the world. It is produced by DTN meteorologists and updated once a day. Purpose: This shapefile can be used to plan flight routes and manage aircraft around volcano threats. Description: This polygon shapefile represents potential area of ash generated by active volcanoes

Abstract: This polygon shapefile contains Federal Aviation Administration temporary flight restrictions (TFR) for the continental United States, Alaska and Hawaii. New TFRs are added to the shapefile as they become available. TFRs shapefiles are potentially updated every 10 minutes, but at least once an hour. Purpose: This shapefile can be used to plan flight routes

Product Description Abstract: This polygon shapefile, which covers the world, identifies areas of potentially hazardous high-level flight weather, including hail, cumulonimbus clouds, thunderstorms, tropical cyclones, moderate or severe turbulence, severe icing, mountain wave turbulence, duststorms, sandstorms and volcanic ash. It is based on advisories international SIGMET advisories, and is updated every 10 minutes. Purpose: This shapefile can

Product Description Abstract: This point shapefile, which covers the contiguous United States and surrounding waters, identifies the highest elevation at which precipitation is detected by weather radar in an area of precipitation. It is produced from NEXRAD Decoded Attribute Table information, and is nominally updated every five minutes. Purpose: This shapefile can be used to

Echo Tops International Sigmets Temporary Flight Restrictions Volcanic Ash Areas Volcano Locations Forecast Cloud Ceilings Forecast Convective Activity Forecast Tropical Cyclone Locations Forecast Flight Conditions Forecast Jet Streams Forecast Tropopause Height Contours Volcanic Ash Area Advisories Convective SIGMET Advisories SIGMET Advisories AIRMET IFR/Mountain Obscuration Advisories AIRMET Turbulence Advisories AIRMET Icing Advisories