Picture: Spill at Pathfinder Dam, North Platte River June 2011
27
Picture: Spill at Pathfinder Dam, North Platte River June 2011 Missouri Basin Forecasters Meeting – February 20-21, 2013 Cara McCarthy Natural Resources Conservation Service Snow Survey and Water Supply Forecast Program National Water and Climate Center Portland, OR Entry to Geneva Park Snow Course, South Platte, for February 1 st , 2013 Measurement, 60% of Normal
description
Missouri Basin Forecasters Meeting – February 20-21, 2013. Cara McCarthy Natural Resources Conservation Service Snow Survey and Water Supply Forecast Program National Water and Climate Center Portland, OR. Picture: Spill at Pathfinder Dam, North Platte River June 2011. - PowerPoint PPT Presentation
Transcript of Picture: Spill at Pathfinder Dam, North Platte River June 2011
Picture: Spill at Pathfinder Dam, North Platte RiverJune 2011
Missouri Basin Forecasters Meeting – February 20-21, 2013
Cara McCarthyNatural Resources Conservation ServiceSnow Survey and Water Supply Forecast ProgramNational Water and Climate CenterPortland, OR
Entry to Geneva Park Snow Course, South Platte, for February 1st, 2013 Measurement,60% of Normal
• Water Supply Forecasts/Current Conditions• A SNOTEL site you should not use for SWE• Snow Course Reductions• Change to 1981-2010 SWE Medians
Sawtooth Snow Course, South PlatteFeb 1st Measurement
February 1, 2013
Feb 1, 2013
February 1, 2013Snow Water Equivalent
as % of Normal (Median)
SNOTELMonth-to-Date Precipitation
% of Normal
February 18, 2013
Feb 18, 2013SWE
% Normal
Feb 1, 2013SWE
% of Normal
Change in SNOTEL Snow Water Equivalent since February 1
Month-to-Date Guidance Forecast Change as Percent of 1981-2010 Normal
Feb 18, 2013
From Lucas Zukiewicz, NRCS SSWSF Montana DCO 2/7/2013
Pike Creek SNOTEL May 2009
Pike Creek SNOTEL May 2009
Bear Basin Snow Course 2006
39 Snow Course Reductions in Montana DCO Area
New Normals this Year
• Every decade the 30 year normals change periods.• This year we go from the 1971-2000 period to the
1981-2010 period.• The change is meant to keep pace with current
climatic conditions as the most recent years are said to represent the current conditions.
• Most data types are calculated as a straight average except Snow Water Equivalent which is “median” or “middle value”
Lewis Lake Divide SNOTEL Site Yellowstone NP January 16, 2013
http://www.wcc.nrcs.usda.gov/reportGenerator/
Questions?
www.wcc.nrcs.usda.gov
