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Top News of the Day Top News of the Day
Top News of the Day 8 February 2010: Due to the strong winter storms, a moratorium has been declared on upgrades and changes to NWS computer systems. As a result, the AWC has delayed implementation of the Enhanced version of GTG to 11 February 2010. See Technical Implementation Notice 10-03 for details.
Top News of the Day 1 February 2010: Java Tools have been updated. An update of Java Software on your computer may be required. See update information on our Java Help Page. Click on "Java Software Download".
Top News of the Day 1 February 2010: AviationWeather.gov and AviationWeather.gov/adds are now QICP Certified. See QICP Description for registration info and QICP Agreement for more details.
Top News of the Day 12 January 2010: Aviation Weather Center Graphical AIRMET (G-AIRMET) becomes an operational product on 16 March, 2010. See Service Change Notice (SCN) 10-04 for details.
The Aviation Digital Data Service (ADDS) makes available to the aviation community text, digital and graphical forecasts, analyses, and observations of aviation-related weather variables. ADDS is a joint effort of NCAR Research Applications Program (RAP), Global Systems Division (GSD) of NOAA's Earth System Research Laboratory (ESRL), and the National Centers for Environmental Prediction (NCEP) Aviation Weather Center (AWC).
 
Current AIR/SIGMETs:
Current AIR/SIGMETs 		The National Weather Service operationally supports this site as well as the following operational products:

 • METARs
 • TAFs
 • PIREPS
 • AIR/SIGMETs
 • Satellite
 • Radar 		 • Analysis & Prognostic Charts
 • Graphical wind & temperature charts
 • National Convective Weather Forecast
 • Current & Forecast Icing Potential
 • Graphical Turbulence Guidance


The Federal Aviation Administration funds and directs the continuing development of ADDS as well as other experimental products being developed by the FAA Aviation Weather Research Program (AWRP).

The results of the latest ADDS development efforts along with new experimental AWRP algorithm results can be viewed on the experimental ADDS site.
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