Experimental ADDS

Weather Products
Advisories
- AIR/SIGMETs
Observed Products
Forecasted Products
- Convection
- Winds/Temps
- Turbulence
- Prog Charts
- Icing
- TAFs
These products are available online and run directly within your web browser.
Desktop Apps
Flight Path Tool

Provides all ADDS weather products in a single interactive display. Slices through 4D datasets horizontally at a flight level, vertically along a flight path, and in time. Includes meteorograms at surface points.
- Learn More
- Launch Application
HEMS Tool

Provides weather of interest to low altitude pilots in an interactive display. Interpolates 3D weather variables to AGL altitudes. Includes street-scale basemaps.
- Learn More
- Launch Application
These "all-in-one" applications run outside of the web browser and your system may require additional configuration before you are able to launch them.
Data Services
Text Data Server

The Text Data Server enhances and complements the ADDS web site by providing flexible and queryable access to real-time METARs, PIREPs, TAFs, and AIR/SIGMETs data.
- Learn More
In addition to the weather products and desktop applications, ADDS also provides service level access to selected real-time data.

Overview

There are 159 NEXRAD radars systems deployed in the United States and around the world. Each of these radars implements the WSR-88D technology. The "Doppler" capability of these radars uses shifts in the phase of the reflected energy to determine the velocity of the particles towards or away from the radar. The effective detection range is between 80 and 140 nautical miles, depending on the intensity of the precipitation. In clear air mode, these radars transmit data every 10 minutes. In precip mode, they transmit every 4 to 6 minutes.

All of the images on the ADDS radar page are generated by the NWS. ADDS simply provides a custom interface to the information already available on the NWS website.

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Overview