Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
447 AM EDT Wed Apr 26 2017
Valid 12Z Wed Apr 26 2017 - 12Z Fri Apr 28 2017
...There is a slight risk of severe thunderstorms over parts of the
...There is an embedded moderate risk of severe thunderstorms over parts
of Lower Mississippi Valley...
...Heavy snow for parts of the Northern/Central Rockies...
...Heavy rain possible from parts of Western Ohio Valley southwestward to
the Lower Mississippi Valley...
A front extending from the Upper Great Lakes/Upper Mississippi Valley
southwestward to the Southern High Plains will move eastward to the Lower
Great Lakes/Ohio Valley southward to Southeast/Tennessee Valley by
Thursday evening. Showers and thunderstorms will develop along and ahead
of the boundary from the Great Lakes to the Southern Plains/Western Gulf
Coast that will advance slowly eastward to the Great Lakes/Ohio Valley to
the Central/Southern Appalachians and parts of the Southeast by Thursday
evening. Snow will also develop over parts of the Northern Plains and
Upper Great Lakes/Upper Mississippi Valley through Thursday afternoon. In
addition, rain/freezing rain will develop over parts of Northern Wisconsin
and the Northwestern Upper Peninsula of Michigan through Thursday morning.
Meanwhile, a front moving onshore over the Pacific Northwest will move
southeastward to the Southern High Plains/Southern Plains and westward
into the Southwest/Southern Rockies by Thursday evening. The storm will
produce mainly rain over the Pacific Northwest and Northern California
with snow and lower elevation rain over parts of the Northern Rockies.
Overnight Wednesday, the snow levels will lower over the Pacific Northwest
and into the Great Basin with snow developing over the Cascades and over
parts of the Great Basin/Central Rockies. As the system moves eastward
showers and thunderstorms will develop over parts of the Central/Southern
Plains on Thursday into Thursday evening. Rain and higher elevation snow
will continue over parts of the Pacific Northwest eastward to the
Northern/Central Rockies through Thursday evening.
Elsewhere, low pressure along the Northern Mid-Atlantic Coast will slowly
move northward to New England Coast while weakening. The storm will
produce rain along the Northern Mid-Atlantic Coast into the Northeast that
will slowly wane to New England by Thursday morning and to New England
Coast by Thursday evening.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
NWS WPC Office Area Forecast Discussion