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 Maintenance announcements
Maintenance announcements are posted here. These announcements regard the GDACS web site and the GDACS disaster alert system.
GDACS maintenance policy - Friday, February 14, 2014
To comply with JRC policy on security settings, GDACS servers may go offline on a weekly basis for basic maintenance. The maintenance will be limited to a few minutes around 11:00UTC on Fridays. This affects all GDACS services (including mobile services). JRC is working on a solution to eliminate the downtime. read more ...
Old GDACS system shut down - Friday, November 22, 2013

In June 2013, GDACS was migrated to new servers. The old system was still available as backup under the URL This system has now been shut down. If you have any links pointing to that URL, they will not longer work.

Solved issue with Australian mobile numbers - Tuesday, November 19, 2013

Australian users may have experienced problems with receiving SMS alerts from GDACS in the past months. We noticed a while ago that all SMS traffic to Australian mobile numbers was not processed well by our SMS provider. We’ve since worked with the provider on a solution, which was tested with a few users this week. All traffic to Australian mobile numbers should now be routed correctly.

GDACS Migration - Wednesday, July 17, 2013

The JRC will shortly upgrade hardware and software underlying the GDACS monitoring, alert and public web system. User registration and changes to the alert profile will be unavailable for a short time, but other changes should be transparent. The main changes are:

  • Complete overhaul of the Earthquake and Tsunami system for better performance and with new alert models for tsunamis, support for national sub-systems and for different alert scales
  • Upgrade of the geospatial database system from ArcGIS Server 9.3 to 10, with new features for better maps
  • Migration of hardware from JRC corporate web zone to a dedicated subnet with more flexibility for scaling and deploying new beta products, and reducing the servers from 15 to 8 more powerful ones in a new architecture.

The new system can be previewed on Please let us know if you notice bugs with services you're using, in particular for syndicated feeds. After the switch (which will be announced in a further message), the old system will be available on Please don't hesitate to contact us for further information.

 Your feedback
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         4/21/2014 10:46:43 AM
volcanic eruptions Dear Sirs, I am airline pilot, active with the German, European and International Associations. I have subscribed to your alerts, and found them to be helpful as far as hurricanes are concerned. I noted, however, that you don´t have near real-time warnings for volcanic eruptions. Since many years, I have been following the deveolopment of SACS. The system sends out automated SO2 Aerosol emission warnings as well as ash warnings. It might be of interest to you as an additional source of information. Best regards, Klaus Sievers Member, Air Traffic Services Working Group, German Airline Pilots´ Association Submitted By: Klaus Sievers

         3/17/2014 1:45:19 AM
My password and user name don't work Hello, I have been trying to change my alerts for months but can't get onto the system. Can you please help me or give me a phone number that I can call for assistance? Thank you, Kelly Cullen Submitted By: kelly

         3/16/2014 5:30:29 PM
Registration of a government agency Hi, I am a consultant working for the Gambia government on disaster risks management in the framework of a World Bank project. I would like to know if African national disasters management agencies can be registred in your users database (and how to get an id. and a pwd), and if there is a tsunami watch for Western Africa. Thanks Submitted By: Dr. Christian CREPEAU

         3/3/2014 9:27:15 AM
upgrade to secure flies Good Morning, I am new at OCHA INSARAG and I am looking for someone who could help us to know the capacities and limits possible for some sharing files on the GDACS. Please contact me for a conversation about this subject Nicolas Meunier Submitted By: nic

         11/12/2013 3:53:03 AM
Tsunami response and frequency of alerts by peril 1) Is there a way to get shape files for displaying the footprints for Storms Surge? 2) What is the frequency of the advisory reports, alerts by peril? 3) How is the impact to population calculated for different time alerts? Submitted By: Francisco J Perez

         11/3/2013 7:39:16 PM
Newsletter Dear GDACS Team! First of all, thank you so much for everything. You are doing an amazing job. Just wanted to let you know that before I ask for help. I've searcxhed for the newsletter subscription but I can't find it. Any suggestions? Thanks in advance Regards, Peter F. Submitted By: Peter F

         10/15/2013 10:31:47 AM
modify the email profile is it possible to modify my email's profile? if yes how can i do it? thank yu Submitted By:

         10/10/2013 5:17:18 AM
Cyclone TWO-13 Thank you for sending me your news letter (Red alert) on cyclone TWO-13 PHYLIN. I wish to draw your attention that you have shown wrong map in the alert. Pl. make necessary correction Submitted By: shiraz k satarawala

         10/10/2013 5:16:08 AM
Cyclone TWO-13 Thank you for sending me your news letter (Red alert) on cyclone TWO-13 PHYLIN. I wish to draw your attention that you have shown wrong map in the alert. Pl. make necessary correction Submitted By: shiraz k satarawala

         9/27/2013 12:17:03 AM
GDACS Daily Newsletter after 9/17/2013 Dear GDACS Team, unfortunately the daily newsletter does not reach us anymore after the 17/09/2013. We look forward to your feedback. Thank you, Jutta Submitted By: Jutta May