Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
355 AM EST Sun Dec 08 2013
Valid 12Z Sun Dec 08 2013 - 12Z Tue Dec 10 2013
...Snow is expected from the Middle Missouri Valley into the Great Lakes...
...Snow will change over to freezing rain then to rain from parts of the
Ohio/Tennessee Valleys to the Mid-Atlantic/Southern New England...
...Heavy rain possible from parts of the Lower Mississippi Valley/Central
Gulf Coast to the Tennessee Valley...
A complex storm forming over the Central Gulf Coast/Tennessee Valley will
move northward to the Great Lakes/Ohio Valley then into Southeastern
Canada/New England by Monday evening. The system will pull moisture off
the Gulf of Mexico northward overrunning the associated front over the
Southeast/Central Gulf Coast into the cold air from the Middle Mississippi
Valley to the Mid-Atlantic. A band of snow will develop over parts of the
Middle Mississippi/Ohio Valleys into the Mid-Atlantic that will move
northward into the Lower Great Lakes to New England by Monday morning.
The snow will be forced out by a band of freezing rain/sleet that will,
likewise, move northward from the Tennessee Valley/Southern Mid-Atlantic
into the Northern Appalachians/Southern New England also by Monday
Rain will develop over parts of the Western Gulf Coast to the Carolinas
that will similarly move northward into the Northern Mid-Atlantic/New
England by Monday evening, with snow over the interior of Northern New
England/Northern Appalachians, too. Showers and thunderstorms will
develop along and ahead of the front over the Central Gulf Coast moving
into the Southeast/Southern Mid-Atlantic by Monday evening. Behind the
boundary, rain will continue over the Western Gulf Coast to the interior
Southeast/Southern Mid-Atlantic by Monday evening.
Meanwhile, upper-level energy over the Southern Rockies will move
northeastward to the Great Lakes/Southeastern Canada by Monday. The
energy will trigger light snow over parts of the Southern/Central Rockies
that will end by Sunday evening. A new area of snow will develop over
parts of the Middle Missouri Valley the at will expand into the Great
Lakes by Sunday evening into Monday morning. Lake effect snow will
develop over the Upper Great Lakes on Monday evening.
Some additional upper-level energy will move over the Southwest/Southern
Rockies by Monday evening. A small area of snow will develop over parts
of the Southeast/Southern Rockies early Monday morning, that will begin to
wane by Monday evening. In addition, a developing front over West-Central
Canada that will move southeastward into the Northern Plains by Monday
evening. The system will produce light snow over parts of Northern High
Plains early Monday morning, moving into parts of the Northern
Plains/Upper Mississippi Valley by Monday evening.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php