[05/02/2011] There has been a great increase in user requests to the NSSL OnDemand User Interface as a result of the 27 April 2011 Tornado Outbreak in the Southeastern US. While we are restricted from offering access to non research or government users, we can provide the Google Earth(tm) KMZ file that has been circulated by NOAA.
The Google Earth KMZ file for the NSSL RotationTracks can be downloaded by clicking
If you are interested in the Maximum Expected Size of Hail (MESH) swaths, you can download that
These two KMZ files span from 16 UTC on 27 April until 9 UTC on 28 April, 2011.
The images are created using the NSSL WDSSII Multi-Radar/Multi-Sensor system. Please see the website http://wdssii.nssl.noaa.gov/ for more information about how these and other products are made. Also note that while we restrict access to the NSSL OnDemnd archive system, realtime Google Earth(tm) KMZ files are freely available for these and other products by going to http://wdssii.nssl.noaa.gov/?r=products.
The WDSSII software is jointly owned by the Univ. of Oklahoma. Weather Decisions Technologies http://www.wdtinc.com AND Weather Central http://www.wxc.com are licensed users of the WDSS-II application and distributors of the data[klm :: 2351z]
REGISTRATION IS REQUIRED for anyone not on a .gov, or .mil domain. For more info: User Registration.Due to potential abuse by .edu emails, all those presumably associated with education will now need to register
Data are experimental and not intended for protection of life and property, use these data at your own risk.
Data are resricted to non-commercial use without permission.
RESEARCHERS: The OnDemand dataset is not intended to served as a research dataset. We can make no inventory of the information which went into the mergers (radars, near-storm environment), thus we cannot guarantee completeness nor accuracy. If you need a research data set, we highly recommend downloading WDSS-II and producing your dataset through the software. Feel free to contact for any futher information or clarification.
While we make every attempt to collect and preserve continuous data, gaps in the data may occur in rare instances. Data is available starting 3 Jan 2008.
Please do NOT script your requests. The OnDemand system is not capable of handling a large number of nearly simultaneous requests. If you are in need of a large dataset, please contact us.