Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
208 PM EDT Sat Oct 18 2014
Valid 00Z Sun Oct 19 2014 - 00Z Tue Oct 21 2014
...Rainfall across the Pacific Northwest...
A slow-moving cold front moves towards the Pacific Northwest on Sunday
which will begin another round of rain and thunderstorms to parts of the
Northwest and northern California from late Sunday into Monday. Rainfall
should be most persistent over the higher terrain of Washington and
Oregon, and given the warm nature of this system, any snow would be
confined to mountain peaks. Above normal temperatures are expected across
much of the Rockies and Great Basin ahead of the cold front.
Scattered showers, with some snow at higher elevations, are likely across
the Lower Great Lakes and the western slopes of the central and northern
Appalachians through Sunday morning as a disturbance aloft pivots across
the region. A reinforcing cold front at the disturbance's leading edge is
expected to reach the East Coast by this evening. Limited
shower/thunderstorm activity is possible across Florida as the boundary
drops southward. An invading disturbance from the west brings additional
showers to the Great Lakes from late Sunday into Monday. Overall, below
normal temperatures expected over the Great Lakes, Ohio Valley, and
Northeast over the next couple of days.
Parts of southern and western Texas along with New Mexico should witness
scattered showers and thunderstorms for the remainder of the weekend as
moisture increases and moves onshore from the Gulf of Mexico and a pocket
of cooler temperatures aloft moves near the Mexico/United States border,
which destabilizes the atmosphere.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php