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The Northwest Flow Snowfall Discussion Group

An Extension of the Mid-Atlantic Collaborative Science, Technology, and Applied Research (CSTAR) Group

The Northwest Flow Snowfall Discussion Group was first created following the Fall 2005 CSTAR Regional Workshop held in Raleigh, NC. The group was designed as a "spin-off" of the regional CSTAR group with its primary focus being the specific regional forecast problem of northwest flow snowfall in the Appalachian Mountains. Numerous NWS forecast offices are affected by this winter weather phenomenon, and have taken an active role in the discussion group including Greenville-Spartanburg, SC (GSP), Morristown, TN (MRX), Blacksburg, VA (RNK), Jackson, KY (JKL), Charleston, WV (RLX), and Sterling, VA (LWX). In addition to these NWS offices, North Carolina State University, Appalachian State University, the University of North Carolina at Asheville (UNCA), the University of North Carolina at Chapel Hill (UNC), and the University of North Carolina at Charlotte (UNCC) are active participants from the academic realm. The group meets periodically throughout the year by way of telephone conference to discuss recent/upcoming northwest flow snowfall events, research updates, local modeling efforts, and other notable developments pertinent to the northwest flow snowfall phenomenon. The purpose of this Web page is to provide a central location to access all information that is directly relevant to the group.

PAST CONFERENCE CALLS - Adobe Reader
Conference calls are used to discuss recent and upcoming events, as well as for updates concerning local research among other things. Below are a list of calls dates and links to a summary of the call. Any presentations that were referenced during the call are linked in the notes and are available for download.

NEW RESEARCH
 

PAST EVENT CASE STUDIES AND SUMMARIES
Below are links to write-ups of notable NWFS events, the author, and associated NWS office.
  • 2010
  • November 5-6 - GSP
  • February 10-11 - GSP
  • 2009
  • April 7th-8th - GSP
  • February 3rd-5th - GSP
  • January 19th - RNK
  • 2004
  • December 19th - Bryan McAvoy, Greenville-Spartanburg, SC
  • March 22nd - Steve Keighton, Jim Hudgins, and Robert Stonefield, Blacksburg, VA (9.92 MB file)

RELATED PUBLICATIONS/CONFERENCE PRESENTATIONS
Journal articles, papers, and conference abstracts/presentations written by members of the group.
  • Journal Articles
A Collaborative Approach to Study Northwest Flow Snow in the Southern Appalachians
  • Keighton, S., and Coauthors, 2009: . Bull. Amer. Meteor. Soc., 90, 979-991.
Antecedent upstream air trajectories associated with northwest flow snowfall in the southern Appalachians
  • Perry, L.B., C.E. Konrad, and T.W. Schmidlin, 2007: . Wea. Forecasting, 22, 334-352.
Relationships between NW flow snowfall and topography in the Southern Appalachians, USA
  • Perry, L.B., and C.E. Konrad, 2006: . Clim. Res., 32, 35-47.
  • Dissertations and Theses
http://www.lib.ncsu.edu/resolver/1840.16/1202
  • Holloway, B. S., 2007: The role of the Great Lakes in northwest flow snowfall events in the southern Appalachian Mountains. M.S. thesis, Dept. of Marine, Earth, and Atmospheric Sciences, North Carolina State University, 204 pp. [Available online at .]
http://dc.lib.unc.edu/u?/etd,165
  • Perry, L. B., 2006: Synoptic climatology of northwest flow snowfall in the southern Appalachians. Ph.D. dissertation, Dept. of Geography, University of North Carolina at Chapel Hill, 176 pp. [Available online at .]
  • Conference Papers and Presentations
Poster
  • Snowfall accumulation forecasting challenges for the southern Appalachians - Douglas Miller, L.B. Perry, Sandra Yuter, Laurence Lee, and Stephen Keighton - 2008, 33rd National Weather Association Annual Meeting, Louisville, KY. (, 422 KB file)
Poster
  • Mesoscale snowbands persisting downstream of the southern Appalachians during northwest flow upslope events - James Hudgins - 2008, 33rd National Weather Association Annual Meeting, Louisville, KY. (, 324 KB file)
Poster
  • The role of the Great Lakes in the 10-11 February 2005 northwest flow snowfall event in the southern Appalachian Mountains - Blair Holloway and Gary Lackmann - 2008, 33rd National Weather Association Annual Meeting, Louisville, KY. (, 110 KB file)
Presentation
  • Building a greater understanding of northwest flow snow in the southern Appalachians through a unique collaborative approach - Steve Keighton - 2008, 33rd National Weather Association Annual Meeting, Louisville, KY. (, 3.77 MB file)
PaperPoster
  • Atmospheric influences on new snowfall density in the southern Appalachian Mountains, USA - L. Baker Perry, Douglas K. Miller, Sandra E. Yuter, Laurence G. Lee, and Stephen Keighton - 2008, 65th Eastern Snow Conference, Fairlee, VT. ( - 1.71 MB file, - 431 KB file)
Storm structures and precipitation characteristics of snow events in the southern Appalachian Mountains  Poster
  • - Sandra E. Yuter and L.B. Perry - 2007, 12th Conference on Mesoscale Processes, Waterville Valley, NH, American Meteorological Society. (, 183 KB file)
The influence of the Great Lakes on northwest flow snowfall in the southern Appalachians
  • - Robbie Munroe, Doug Miller, Gary Lackmann, and Blair Holloway - 2007, 12th Conference on Mesoscale Processes, Waterville Valley, NH, American Meteorological Society.
Presentation
  • The role of the Great Lakes in the 10-11 February 2005 northwest flow snowfall event in the southern Appalachian Mountains - Blair Holloway - 2007, 13th Annual Palmetto Chapter of the American Meteorological Society Mini-Technical Conference, Columbia, SC. (, 3.73 MB file)

LINKS TO LOCAL MESOSCALE MODELS

ADDITIONAL LINKS

Any questions or comments concerning this page and its contents can be directed to Larry Lee.