Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
332 AM EDT Tue Oct 16 2018

Valid 12Z Tue Oct 16 2018 - 12Z Thu Oct 18 2018

...Heavy rain possible over parts of the Southern Plains...

...Isolated heavy snow possible over parts of the Central Rockies while
scattered snow develops over the Southern Rockies...

...Rain/freezing rain possible over parts of New Mexico...

...Santa Ana Wind over Southern California should gradually abate the next
couple of days... 

Cold high pressure over the Central Rockies will move southeastward into
the Southern High Plains by Tuesday evening into Wednesday evening.  The
cold air mass will bring temperatures that will be 20 to 35 degrees below
average over parts of the Southern Plains into parts of the Lower
Mississippi Valley.  Clock-wise circulation around the area of high
pressure and moisture from the Western Gulf of Mexico will aid in
developing rain over parts of the Southern Plains through Wednesday
evening into Thursday.  Some areas of rain/freezing rain will develop over
Southwestern Texas through Tuesday evening.  In contrast, an upper-level
low over the Southwest will be quasi-stationary through Wednesday evening.
 The energy will aid in producing scattered rain and higher elevation snow
over parts of the Southwest/Great Basin and Southern Rockies through
Wednesday evening, too.  Areas of rain/freezing rain will develop over
parts of New Mexico through Thursday morning. 

Meanwhile, a quasi-stationary front extending from parts of the Southern
Mid-Atlantic southwestward into the Central Gulf Coast with an area of low
pressure off the Western Gulf Coast through Wednesday evening.  Moisture
from the Gulf of Mexico will pool along the boundary aiding in the
development of showers and thunderstorms from parts of the
Mid-Atlantic/Southeast into the Western Gulf Coast through Wednesday. 
Diurnal heating will aid in producing maximum areal coverage over parts of
the Southeast into parts of the Eastern/Central Gulf Coast during the
afternoon into evening hours.  Elsewhere, one area of upper-level energy
follow by another area will transit across parts of the Great Lakes into
the Northeast Tuesday into Wednesday evening.  The energy will produce
scattered areas of rain and snow over parts of the Great Lakes into parts
of the Northeast through Wednesday evening.  In addition, strong high
pressure over Central/Northern Rockies will aid in producing strong wind
over parts of Southern California.   


Ziegenfelder


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