Try the new SPC Mesoscale Analysis Page! Several additions and improvements have been added, such as image overlays, larger images, and fixed sector areas that permanently cover the entire contiguous United States. This new format is expected to replace the existing
set of pages on March 15, 2010.
NEW MESOSCALE ANALYSIS PAGE
Use the link at the bottom of the new page to provide feedback on the design, including any compatibility and/or useability issues you might encounter.
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With the exception of the national sector, the six sub-sectors will change as SPC forecasters monitor these areas for hazardous weather.
This information is provided by SPC as a way of sharing the latest severe weather diagnostic techniques with local forecasters.
The SPC runs a 2-pass Barnes surface objective analysis around :05 after each hour, using the latest RUC forecast as a first guess. Next, the surface data is merged with the latest RUC
forecast upper-air data to represent a 3-dimensional current objective analysis. Finally, each gridpoint is post-processed with a sounding analysis rountine called NSHARP to calculate
many technical fields related to severe storms.
Here is more information about the Mesoscale analysis page and a detailed description of the parameter fields.
Contacts for this resource include: Phillip Bothwell, Greg Carbin, John Hart, Corey Mead, and Rich Thompson.
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weather.gov 
