The National Weather Service is forecasting a series of storm systems will 
pass through the area bringing rain and wind through Tuesday.

... Strong to severe thunderstorms, with heavy rain possible today for the
lower Mississippi Valley...
...Rain and mountain snow for the West Coast and Inter-mountain West...
Showers and thunderstorms are popping up over portions of the Central and
Southern Plains and lower/middle Mississippi Valley this afternoon. The
Storm Prediction Center has highlighted portions of the lower Mississippi
Valley as having a slight to enhanced risk for severe thunderstorms






through Monday morning. Periods of heavy rain will be possible with this
convection; which may lead to flash flooding.  A slight and moderate risk
for excessive rainfall has been issued for portions of the lower
Mississippi Valley. River levels will remain quite high across this region
as all of the rain water slowly drains away.
Scattered to widespread rain is forecast for a majority of the eastern
third of the U.S. A low pressure system is lifting north and east from the
South as Gulf moisture streams in overheard. At the same time, a frontal
system will push south and east across the High Plains into the Upper
Midwest/Great Lakes/Ohio Valley area. Rain amounts up to 1 inch will
be common over the next few days. Cool and dry conditions are expected
through Monday morning before the precipitation begins. Mild weather is
also expected from the Mid-Atlantic to the Southeast with afternoon highs
in the 60s and 70s, which is above seasonal averages.
A series of frontal systems will progress eastward through the West and
Intermountain West bringing multiple rounds of rain and mountain snow
over the next couple of days. The Cascades and the Sierra Nevadas are
forecast to have the highest snow accumulations; where 3-day totals of 1
to 3 feet will be possible at the highest elevations. Windy conditions are
expected for coastal areas with wind gusts exceeding 50 mph at times, and
wind advisories and high wind watches are in effect. The Sawtooth Range
and Salmon
 
River Mountains in Idaho could accumulations nearing 2 ft. Lower
elevations/coastal areas from the Olympic peninsula to northern California
will have multiple periods of heavier rainfall. The risk for flash
flooding will remain elevated for southwest Oregon and portions of northern
California through Monday morning. An Excessive Rainfall Outlook
is in effect for northern California and southwest Oregon.