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FXUS01 KWBC 292014

PMDSPD



Short Range Forecast Discussion

NWS Weather Prediction Center College Park MD

400 PM EDT Mon Apr 29 2024



Valid 00Z Tue Apr 30 2024 - 00Z Thu May 02 2024



...Severe weather threat returns to the northern and central

Plains on Tuesday, followed by severe weather and heavy rain/flash

flooding threats farther down the central Plains on Wednesday...



...More high-elevation snows expected across the Pacific Northwest

into the northern and central Rockies for the next couple of

days...



...Warmer than average temperatures across the southern tier

states to the Midwest and Mid-Atlantic but cold and windy across

the Northwest...



The weather pattern that keeps sending fast-moving disturbances

across the western U.S. will continue to form new low pressure

systems in quick succession over the mid-section of the country

through the next couple of days.  The latest low pressure system

that brought severe weather and flash flood emergencies over

eastern Texas, together with widespread cold rain across the

northern U.S., to wet snow near the Canadian border, will weaken

as it tracks northeast across the Great Lakes into southern Canada

on Tuesday.  Meanwhile, the heaviest thunderstorms and severe

weather associated with the trailing front had moved off the

Louisiana coast.  Less intense showers and thunderstorms are

expected to push eastward across the Mid-South, Tennessee and Ohio

Valleys toward the Appalachians and New England on Tuesday, before

becoming more widely scattered along the Eastern Seaboard into

Wednesday morning.  Snowfall on the order of 6-12 inches are

forecast to accumulate over parts of the Cascades and northern

Rockies increasing to nearly 2 feet over the higher elevations of

Glacier National Park.



As the surge of cold air pushes through the Northwest on Tuesday

with the leading cold front reaches the northern and central

Plains, a couple of low pressure systems are forecast to develop. 

The low pressure system that will move across the upper Midwest

will bring a threat of severe thunderstorms across the northern

and central Plains ahead of the trailing cold front on Tuesday. 

Another low pressure system will develop over the central Plains

on Tuesday, this system will bring a higher threat of severe

weather and more widespread heavy rain threat farther south into

the central Plains later on Wednesday as the system intensifies.



Temperature-wise, fast-moving cold upper troughs propagating

through the Northwest and Northern Plains/Upper Midwest will keep

things cooler than average today.  More cold air will push through

the Pacific Northwest on Wednesday.  Meanwhile, a warming trend

will send afternoon temperatures as high as the lower 90s for the

next couple of afternoons across the central to southern High

Plains.  Temperatures will also be well above average along the

East Coast on Tuesday followed by a slight cool down on Wednesday

as a back-door cold front dips south from New England.



Kong





Graphics available at

https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php



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