Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
502 PM EDT Tue Oct 21 2014
Valid 00Z Wed Oct 22 2014 - 00Z Fri Oct 24 2014
...A coastal low pressure system is expected to bring gusty winds and
periods of heavy rain to New England...
...Moderate to heavy rain is expected to linger in the Pacific Northwest
and northern California...
...Scattered showers and thunderstorms will move across the Plains...
Over the next few days, a prominent coastal low pressure system will
remain on our weather map in the northeastern U.S. This Nor'easter type
system will be slow to intensify and will be slow to move out of the New
England area. Intermittent rain today is expected to become more
widespread and heavier by later on Thursday and into Friday. Up to a few
inches of rain could have fallen by Friday in the coastal areas of Maine.
In addition, winds will increase and seas will become rough as the storm
gradually intensifies just off the coast.
Over the western U.S., a moisture-rich cold front continues to approach
the Pacific Northwest. It appears that moderate to heavy rain will move
slowly inland across Washington and Oregon, spreading into northern
California by Thursday. More than a few inches of rain is forecast along
the coastal sections and into the Cascades where excessive rains could
lead to flash flooding.
Between these two main weather systems, a cold front is moving across the
mid-section of the country. Moisture associated with this front is
somewhat deficient. Showers and thunderstorms are expected to be more
scattered in nature as they slowly advance eastward reaching the Upper
Midwest, mid-Mississippi Valley and the southern Plains by Friday.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php