ADDS - Aviation Digital Data Service

	You can now request all Gulf of Mexico METARs via www.aviationweather.gov/adds/metars by using "@GULF" similar to the @State feature (ie. "@KS").
	Effective March 1, 2013 the Collaborated Convective Forecast Product (CCFP) valid times will change. Currently CCFP is valid 2 hours, 4 hours, and 6 hours from issuance time. The new valid times will be 4 hours, 6 hours, and 8 hours from valid time. Details of this change can be found in NWS Technical Implementation Notice 12-46 (http://www.nws.noaa.gov/om/notification/tin12-46ccfp.htm)

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 SIGMETs:

AIRMET images replaced by
G-AIRMET Display

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.

	NOAA's National Weather Service
	Aviation Weather Center Aviation Digital Data Service (ADDS)