Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
246 PM EST Tue Nov 18 2014
Valid 00Z Wed Nov 19 2014 - 00Z Fri Nov 21 2014
...Heavy lake effect snow possible downwind from the Great Lakes...
Lake effect snow will develop downwind from the Great Lakes ahead of a
clipper system over the Upper Midwest moving eastward to the Great Lakes
on Tuesday evening and in the wake of the storm on Thursday morning.
Meanwhile, a fast moving storm over the Upper Midwest will move eastward
to Eastern Ontario/Western Quebec by Thursday morning. The system will
produce light snow over parts of the Upper Mississippi Valley on Tuesday
evening. As the storm moves over the Great Lakes, lake enhanced snow
will develop over Great Lakes on Wednesday into Thursday morning.
A Pacific storm just off the West Coast will move into an upper-level
ridge over the West Coast and dissipate. The upper-level energy will move
inland to the Great Basin by Thursday. The energy will aid in produce
rain and highest elevation snow over parts of Northern California by
Wednesday morning. The rain and highest elevation snow will move into the
Pacific Northwest by Wednesday evening into Thursday. Light snow will
also develop over parts of the Northern Intermountain Region by Thursday
morning. Elsewhere, return flow off the Western Gulf of Mexico will
trigger scattered light rain over parts of Southern Texas on Thursday
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php