Comprehensive List of Level II Feeds?

[Brian Hartmann]

I know that Iowa State has a Level II data feed for free, but which is susceptible to overloading on significant days, and Allisonhouse has the more robust feed for a monthly fee. Are there any other alternatives or does someone have a comprehensive list available?

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[Jeff Duda]

I have this free site on my list: http://nomads.ncep.noaa.gov/pub/data/nccf/radar/nexrad_level2/
Also consider Caprock Weather.

Personally I haven't experienced delays and overloading of level 2 data since 2010 or 2011...maybe that was level 3...The ISU feed has been more than adequate for me for several years now.

 

[Brian G]

The order I have configured in GR2Analyst is AllisonHouse, NOAA, and Iowa State.

Also, it's only for the MZZU radar, but might as well post for completeness. Note, the AH and IEM feeds include MZZU.

<http://weather.missouri.edu/radar/nexrad2/>

 

[Brian Hartmann]

Thanks, Jeff and Brian. Just out of curiosity, with a feed like NOAA or ISU, would a potential congestion-caused slowdown be radar site specific? For example, if a ton of folks were pulling the feed for Amarillo but I were interested in Tulsa, would a slowdown affect Tulsa as well?

I am going to try the 21 day trial of GR2A to see if I want to invest.

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[Nick Copeland]

Any latency you experience if any would be server side and not from a specific radar site unless that site is experiencing technical issues or has latency issues between the site and the server which is also possible but, that won't be load specific. For providers like AH and Iowa they have redundancy measures in place to handle load balancing for latency issues. I am sure NOAA does too but, with their budget I am not sure of the quality of their infustructure compared to the other providers.

 

[Brian G]

I realize it's expensive, but you'll definitely want to invest in GR2Analyst. Take advantage of the trial period, of course, but you should definitely go ahead and pull the trigger with the purchase IMHO.

Also, here's a couple of sites you can use to pull up older radar volume files. I personally prefer the Amazon site. Their archive goes back to the 1990's. The UCAR site only has the last 7 days. You can't live-poll with either of them, but they are near realtime. Just download the files one-by-one and drag-and-drop them onto GR2Analyst.

Amazon: https://s3.amazonaws.com/noaa-nexrad-level2/index.html
UCAR: http://motherlode.ucar.edu/thredds/catalog/nexrad/level2/catalog.html