Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
300 PM EST Sat Dec 08 2018

Valid 00Z Sun Dec 09 2018 - 00Z Tue Dec 11 2018

...Expect hazardous winter travel conditions from the Southern Plains to
the Mid-Atlantic Coast, with significant snow and ice in the Southern
Appalachians...

...Heavy rain possible over the Olympic Peninsula...

...Heavy snow possible over the Northern Cascades and higher elevations of
the Olympic Peninsula...

A strong storm over the Central Gulf Coast will move eastward to the
Southeast Coast by Sunday morning then move northeastward out over the
Atlantic Ocean by Monday morning.  The system will produce rain and snow
over the northwestern edge of the precipitation shield over parts of the
interior Southern Plains and Lower Mississippi Valley that will change
over to areas of rain/freezing rain overnight Saturday over parts of the
Tennessee and Southern Ohio Valleys.  Also overnight Saturday,
rain/freezing rain and snow will develop over parts of the Southern
Appalachians/Southern Mid-Atlantic continuing through Monday morning.  The
snow will be heavy at times.  Along the associated cold front, heavy rain
will develop over parts of the Central Gulf Coast into parts of the
Tennessee Valley overnight Saturday that will, likewise, move eastward to
the Southeast Coast by Sunday morning then off the coast by Sunday
afternoon.  Showers and thunderstorms will develop over parts of Florida
on Sunday morning, ending by overnight Sunday. 

Meanwhile, a front over the Eastern Pacific will move onshore over
Northwest and Northern California overnight Sunday.  A head of the front,
rain will move onshore on Sunday afternoon over the Pacific Northwest
Coast that will move inland.  Rain and higher elevation snow will develop
over the Northwest/Northern California by Sunday evening with snow
expanding into the Northern Intermountain Region overnight Sunday into
Monday.  Additionally, a front will move into the Northeast Sunday evening
into Monday.  Light snow will develop over parts of the Northeast through
early Monday morning. 
 

Ziegenfelder


Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php