NOUS41 KWBC 141832



Public Information Statement

National Weather Service Headquarters Washington DC

130 PM EST Fri Dec 14 2012


To:†††††† Subscribers:

††††††††† -Family of Services

††††††††† -NOAA Weather Wire Service

††††††††† -Emergency Managers Weather Information Network

††††††††† -NOAAPORT

††††††††† Other NWS partners and NWS employees


From:†††† James Hoke

††††††††† Director, Hydrometeorological Prediction Center


Subject:Solicitation of comments through March 15, 2013

††††††††† on the Experimental HPC Probabilistic Winter Weather

††††††††† Forecast (PWPF) percentile products


The National Centers for Environmental Predictionís (NCEP)

Hydrometeorological Prediction Center (HPC) is soliciting

comments on the Experimental HPC Probabilistic Winter Weather

Forecast (PWPF) percentile products. The new percentile forecasts

complement the existing probability of exceedance forecasts and

are derived from the same probability distribution function. The

percentile forecasts are available for snow and ice accumulations

at the 5th, 10th, 25th, 50th, 75th, 90th, and 95th percentile

levels over the CONUS.


Graphical representations of the products are online at:



The percentile data are available in GRIB2 format from the HPC

ftp server at:


The electronic survey as listed on the HPC webpage can be found

at the following:


This product is in the new and enhanced products/services catalog

at the following:


Comments regarding the HPC experimental PWPF percentiles should

be sent by March 15, 2013, to:



David Novak (W/NP32)

College Park, Maryland 20740



NWS Public Information Statements are online at: