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Normal Maps courtesy of the PRISM Climate Group, Oregon State University, prism.oregonstate.edu created Oct 2008
8 to 14 Day Outlook
Sunday December 29 - Saturday January 4
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This webpage was developed in conjunction with the Weather Forecast Office in Pendleton, Oregon (WFO PDT).
Many thanks to the staff there for developing the prototype and assisting in the transition to CPC.
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FAQ
- What climatologies are used in this display?
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PRISM (Parameter-elevation Regressions on Independent Slopes Model) normals are used in this display. PRISM data are inherently available as monthly values.
For precipitation, daily average values are calculated (Monthly Total/Number of Days in Month) and combined with data from the Cooperative Observer Network (COOP).
These values are then summed over the 7-day period to create total precipitation normals. For temperatures, monthly average maximum/minimum temperatures are assigned to the
15th of the current month and subsequent month. Intervening values are linearly interpolated, combined with data from the COOP, and averaged over the 7-day period to create
average maximum/minimum temperature normals.
- What color scheme is used?
- The color scheme follows that of the static images for the 6-10 day forecasts and 8-14 day forecasts.
- What does the highlighting around the normal precipitation or normal maximum/minimum temperature imply?
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The color used to highlight the normal values (precipitation or maximum/minimum temperature) are used to delineate the category of the forecast at the point clicked. If the selected point is within
an area of enhanced odds for above-normal temperatures, the shading around the normal maximum/minimum temperature will appear red. If the selected point is within an area of enhanced odds for
below-normal temperatures, the shading around the normal maximum/minimum temperature will appear blue. The same idea applies to the precipitation normal values, except enhanced odds for
above- (below-) normal precipitation values are green (brown).
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--- a PPN by Garber Painting Akron. With Image Size Reduction included!Fetched URL: http://www.cpc.ncep.noaa.gov/products/predictions/814day/interactive/index.php
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