On Monday April 30, the winds, temperature, and relative humidity data derived from the current Rapid Update Cycle (RUC) modeling system will be replaced with the winds, temperature, and relative humidity data obtained from the new Weather Research and Forecast (WRF) -Rapid Refresh (RR) modeling system, also known as RAP.&...

The Experimental ADDS web site, data services, and applications will be shut down from 8am MDT (14Z) until around 5pm MDT (23Z) on Saturday, April 28th. This outage is to allow for the installation of a new uninterruptable power supply (UPS) in the computer room which houses the ...

On Tuesday May 1, the National Centers for Environmental Prediction will replace the current Rapid
Update Cycle (RUC) modeling system with the new Weather Research and Forecast (WRF) -Rapid Refresh (RR) modeling system, also known as RAP.  

This affects Experimental and Operational ADDS gridded ...

Map services supporting the ADDS FlightPath Tool and HEMS Tool will be down for system maintenance on Saturday, March 24th. We apologize for the inconvenience. Please be prepared to use an alternate source of data while our staff completes this necessary maintenance.

Dear Experimental ADDS users,

    We're happy to announce that the Experimental ADDS website is staffed once again. We are now operating under temporary funding and hopefull that soon we will receive funds for the remainder of the fiscal year.

    ...

Dear Experimental ADDS Users,

Funding for Experimental ADDS ...

We've made several updates to the Experimental ADDS web site:

• Registered users may now indicate more than one home station (click on 'Settings' at the top of the page).
• The Ceiling and Visibility Analysis product has been promoted to its own page. As ...

The National Convective Weather Diagnosis and Forecast v2 products (NCWD2 and NCWF2) have been discontinued as of 6/15/2011. These products will no longer appear on the Experimental ADDS "Convection" page. We apologize for any inconvenience.

When the next generation convective forecast product is available, we will ...

We have resolved the problems with our database. All data should now be current on the website and in the Data Server.

Our apologies for the outage.

We are having problems with the main database on Experimental ADDS. The problem started on Friday, but still has not been resolved. It is affecting many products across the site.

We are working on the problem, but do not yet know when it will be resolved. Our ...