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-------- Original Message --------
913
NOUS41 KWBC 271330
PNSWSH
Service Change Notice 13-55
National Weather Service Headquarters Washington DC
930 AM EDT Tue Aug 28 2013
TO: Subscribers:
-Family of Services
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
-NOAAPORT
Other NWS Partners and NWS employees
FROM: Kevin McCarthy
Acting Director, Weather Prediction Center
SUBJECT: Application of Downscaling to WPC 5 km Deterministic
Quantitative Precipitation Forecasts Effective
October 22, 2013
Effective October 22, 2013, at 800 UTC, the National Centers for
Environmental Predictions (NCEP) Weather Prediction Center (WPC)
will implement downscaling to 5 km resolution on all
deterministic quantitative precipitation forecasts. The change is
based on numerous requests and as part of continual product
improvement. The downscaling uses monthly PRISM data. Enhanced
product detail is most evident during the cool season in the
western United States, with lessor effects in the East.
No changes will be made to WMO headers. Grid file sizes will
remain comparable to current sizes.
WPC has developed graphical and gridded examples of 6-hour,
24-hour, and 168-hour deterministic downscaled QPF available at:
ftp://ftp.wpc.ncep.noaa.gov/downscaled_qpf_examples/
The Hurricane Sandy examples (sandy_) demonstrate results for a heavy precipitation event in the eastern continental United States. The U.S. western examples (westus_) show results for a period of heavy precipitation at the end of November 2012 into early December 2012. For more information, please contact: David Novak NOAA/NCEP/WPC College Park, MD 20740 301-683-1484 David.Novak@xxxxxxxx
National Service Change Notices are online at: http://www.weather.gov/os/notif.htm $$
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