Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
335 PM EDT Thu Jun 30 2016
Valid 00Z Fri Jul 01 2016 - 00Z Sun Jul 03 2016
...Heavy rainfall capable of flash flooding possible across portions of
the Central Plains...
...There is a slight risk for severe thunderstorms across portions of the
Northeast on Friday...
...Showers and thunderstorms continue across the Southwest U.S....
A nearly stationary frontal boundary across the Southeast U.S. will linger
over the next couple of days keeping showers and thunderstorms, some
capable of heavy rainfall, in the forecast on Friday. By Saturday, storms
should become less widespread as the best moisture moves offshore. The
same is true for parts of the Plains where widespread showers and
thunderstorms will continue along and ahead of the western side of this
boundary which is banked up against the Rockies. Storms should be most
organized across portions of the Central Plains Friday and Saturday as
multiple impulses of energy move through in the upper levels of the
atmosphere. Some of these storms will be capable of heavy rainfall,
leading to isolated flash flooding. See the excessive rainfall products
issued by WPC for more details and the latest information.
Another system behind this one dropping into the Plains and the Midwest
this afternoon will allow for showers and thunderstorms tonight across the
Midwest and the Upper Great Lakes, moving into the Ohio Valley and the
Northeast by Friday. These storms may produce heavy rainfall, and the
Storm Prediction Center has highlighted a slight risk for severe weather
across parts of the Northeast on Friday. Behind the front, a cooler and
dryer air mass moves in with temperatures across the Northern/Central
Plains expected to be as much as 10 to 20 degrees below normal.
Out west, monsoonal moisture streaming northward into the Southwest keeps
mainly diurnally driven showers and storms across the Four Corners region,
the Central/Southern Rockies, and the Great Basin. In the Northwest,
temperatures could be as much as 5 to 10 degrees above normal through the
rest of the week.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php