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Service Change Notice 17-85

National Weather Service Headquarters Washington DC

805 AM EDT Mon Jul 10 2017

 

To:      Subscribers:

         -NOAA Weather Wire Service

         -Emergency Managers Weather Information Network

         -NOAAPORT

         Other NWS partners and NWS employees

 

From:    Jon Gottschalck

         Chief, Operational Prediction Branch

 

Subject: Change in format of Climate Prediction Center, Extended

         Range (6-10 day and 8-14 day) Outlooks Effective

         August 1, 2017

 

Currently, CPC colors areas where it favors above normal

temperatures with colors ranging from orange to red and areas

where it favors below normal temperatures with colors from light

blue to dark blue. For precipitation, areas where above normal

precipitation is favored appear in shades of green and below

normal in brown. Areas where near normal temperatures or

precipitation are forecast receive no shading and appear white.

 

CPC does not issue outlooks for Canada or Mexico; those areas

also appear white. Areas with no shading have been confused for

areas of near normal because both appear white in the images.

 

CPC has received feedback at conferences and through other media

that some delineation is needed between areas forecast as near

normal and areas for which it does issue a forecast. One

suggestion was to shade near normal areas with grey. This change

will occur on August 1, 2017.

 

Samples outlooks with near normal shaded grey and not shaded are

online:

 

http://www.cpc.ncep.noaa.gov/products/predictions/experimental/ERF_GreyNormals/index.html

 

For more information, please contact:

   Jon Gottschalck

   NWS NCEP CPC Operational Prediction Branch

   College Park, MD 20740

   jon.gottschalck@noaa.gov

Or contact

   Matthew Rosencrans

   Head of Forecast Operations, Climate Prediction Center

   College Park MD 20740

   matthew.rosencrans@noaa.gov

 

National Service Change Noticeare online at:

 

   http://www.weather.gov/os/notif.htm

 

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