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Northeast snowstorm of 8—10 February 2015

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Presentation on theme: "Northeast snowstorm of 8—10 February 2015"— Presentation transcript:

1 Northeast snowstorm of 8—10 February 2015
Rachael Coons 9 December 2016

2 http://www. wpc. ncep. noaa
Motivation Widespread areas of greater than 15cm snowfall in Upstate NY and New England with areas of greater than 30 cm snowfall within this region. Third of fourth major snowstorm of the season. Boston would go on to break seasonal snowfall record. Impacts enhanced by snow still present from previous storms.

3 Data and Methodology 8—10 February 2015 Northeast Snowstorm
NCEP-NCAR reanalysis WPC surface analysis Synoptic analysis of case using maps made in GEMPAK

4 Synoptic Overview Divergence in right entrance region of jet over Northeast and left exit region of jet over Southeast Warm air advection in Upstate New York and New England Cold air damming with High Pressure centered over Hudson Bay helping to promote easterly flow onshore in New England promoting development of a coastal front. Persistent moisture convergence throughout event Surface temperatures 15o-25oF inland, around freezing on coast.

5 10z 9 February 2015 00z 8 February 2015 18:30z 9 February 2015

6 Conclusions Forcing at upper and lower levels to support ascent and persistent precipitation. High precipitable water values and persistent moisture convergence supported large snowfall totals. Local maxima where coastal front developed and in higher terrain in southern Vermont.

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