What does the highlighting around the normal precipitation or normal maximum/minimum temperature imply? 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. Intervening values are linearly interpolated, combined with data from the COOP, and averaged over the 5-day period to createĪverage maximum/minimum temperature normals.

For temperatures, monthly average maximum/minimum temperatures are assigned to theġ5th of the current month and subsequent month. These values are then summed over the 5-day period to create total precipitation normals.

PRISM data are inherently available as monthly values.įor precipitation, daily average values are calculated (Monthly Total/Number of Days in Month) and combined with data from the Cooperative Observer Network (COOP). PRISM (Parameter-elevation Regressions on Independent Slopes Model) normals are used in this display. Many thanks to the staff there for developing the prototype and assisting in the transition to CPC.įAQ What climatologies are used in this display? This webpage was developed in conjunction with the Weather Forecast Office in Pendleton, Oregon (WFO PDT).

10 day weather underground forecast