...Flash flooding and widespread severe weather possible with storm system developing over the central U.S....
...Rain and higher elevation snow return to the Northwest...
Active weather is expected across the central U.S. late this week as a
surface low deepening in the lee of the Colorado Rockies begins to lift
northeastward through the central Plains and Upper Midwest.
An organized axis of moderate to heavy rains should develop to the north and west of the low track...and falling temperatures behind this system could even lead to some late season accumulating snows over western portions of Nebraska and South Dakota.
Anomalous Gulf moisture surging northward ahead of a trailing cold front pushing through the Plains and Mississippi Valley will fuel widespread convection from the western Gulf Coast all the way up to the Upper Midwest on Thursday.
Developing thunderstorms will have the potential to become strong to severe...and heavy rains within the storms will pose a risk for flash flooding.
On Friday...the active weather will shift eastward with the cold front... impacting locations from the central Gulf coast to the Great Lakes Region.
Unsettled weather will make a return to the northwestern corner of the
Nation as a Pacific front approaching the coast begins to move onshore.
A decent amount of moisture streaming inland with the front should produce moderate to heavy precipitation across the Pacific Northwest early Thursday...which will spread eastward as the front crosses the
Intermountain West and northern Rockies.
Also...temperatures should be low enough across the region to support snow in the higher elevations.