Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
401 AM EDT Fri Sep 03 2021

Valid 12Z Fri Sep 03 2021 - 12Z Sun Sep 05 2021

...Cooler and drier weather to support ongoing cleanup efforts in the
Northeast and Mid-Atlantic the next couple days...

...Rounds of showers and thunderstorms to drench parts of the Nation's
Heartland, severe weather and flash flooding is possible in the Central
Plains...

...Spotty showers and thunderstorms along the Gulf Coast and in the
southern High Plains; poor air quality due to ongoing bouts of wildfire
smoke to continue; hot and steamy in the South Central U.S...

In wake of the devastating severe weather and historic flooding in parts
of the Mid-Atlantic and Northeast left behind by Ida, drastically cooler
and drier conditions are expected to prevail as a dome of high pressure
builds in.  This stretch of fine weather is forecast to continue into the
start of the Labor Day weekend for much of the Northeast. This is welcomed
news for ongoing cleanup efforts in the hard hit areas.  Nevertheless, 
cautions should still be taken as river and stream will take time to
recede from flood stages.

The weather pattern across the U.S. will generally be less active than
recent weeks.  The most active weather should be found across the central
Plains towards the Mid-Mississippi Valley where thunderstorms could get
enough organization near a wavy front to result in an axis of heavy
rainfall on Saturday.  Some of the moisture can be attributed to
former Tropical Cyclone Nora.  In the shorter term, clusters of
thunderstorms ahead of this wavy frontal system will lead to areas of
heavy rain across the central Plains to the upper Midwest today, where
localized areas of flash flooding are also possible.

Elsewhere, a frontal boundary is expected to stall near the central Gulf
Coast and across northern Florida into Saturday.  Spotty showers and
thunderstorms are expected mainly south of this front.  A few of these
thunderstorms may produce heavy downpours within the strongest cells.

Meanwhile, the West Coast should remain mostly dry while Air Quality
Alerts persist across parts of the Pacific Northwest and California as
well as much of Wyoming due to wildfire smoke.  The Midwest and
northern High Plains will join the Northeast in experiencing a rather cool
start to September.  The West Coast begins a gradual warming trend today
in the Pacific Northwest which culminates in a rather hot second half of
the holiday weekend throughout the western third of the country.

Kong/Mullinax