Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
345 AM EDT Fri May 17 2013

Valid 12Z Fri May 17 2013 - 12Z Sun May 19 2013

***Warm weather continues across the southern U.S.***

***Cooler weather for the Northeast and Mid-Atlantic***

***Scattered showers and storms in the western U.S.***

Above normal temperatures are forecast to continue over the next few days
from the Desert Southwest to the Southeast.  This region will be south of
the main frontal zone situated across the nation's mid-section.  There
will also be noticeable levels of humidity with dewpoints well into the
60s.  Numerous showers and storms are likely from the Deep South to the
Carolinas through Saturday as Gulf of Mexico moisture surges northward
around a surface high centered over the western Atlantic.  Farther to the
north, a slow moving cold front is forecast to edge southward from the
Ohio Valley and the Northeast into the Mid-Atlantic region, bringing
temperatures closer to average for this time of year.

Elsewhere, scattered showers and storms remain in the forecast for much of
the Inter-Mountain West and extending into the Pacific Northwest for
Friday and Saturday.  A large scale trough in the atmosphere will allow for
enough instability for convection over this region, and some onshore flow
from the Pacific will generate some showers for the coastal areas of
Oregon and Washington state.

Hamrick


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