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FXUS01 KWBC 121855

PMDSPD



Short Range Forecast Discussion

NWS Weather Prediction Center College Park MD

254 PM EDT Fri Apr 12 2024



Valid 00Z Sat Apr 13 2024 - 00Z Mon Apr 15 2024



...Powerful low pressure system to continue producing gusty winds

and heavy rain across parts of the Great Lakes, Ohio Valley,

Northeast, and Appalachians through tonight...



...Lower elevation rain and mountain snow to enter California on

Saturday...



...Well above average temperatures forecast to surge into the

northern/central Plains this weekend...



A deep low pressure system churning over southeast Ontario, Canada

this afternoon is responsible for widespread shower activity

extending from the Great Lakes and upper Ohio Valley to New

England. Additional heavy rain is possible through tonight across

New England and parts of Upstate New York. Isolated instances of

flash flooding are possible, especially where recent snowmelt has

led to elevated river levels and saturated soil. Flood Watches and

Warnings are in effect for parts of northern New Hampshire and

western/central Maine. Additionally, a few thunderstorms are

possible and could turn severe over eastern New York and western

New England. A tight pressure gradient is also producing gusty

winds surrounding the storm system. Wind Advisories are in effect

for parts of the Great Lakes, Ohio Valley, and Appalachians due to

the potential for wind gusts up to 50 mph. As the system exits

deeper into Canada on Saturday, rain could change to snow over

parts of northern Pennsylvania and New York, with winds gradually

waning.



For the West Coast, an approaching storm system is expected to

spread lower elevation rain and high elevation snow to California

beginning tonight. Rain could be heavy enough at times along the

central and southern coastal ranges to produce isolated flooding

concerns. The Sierra Nevada and northern California mountain

ranges could see upwards of 6 to 12 inches of snowfall. Meanwhile,

gusty winds are forecast to develop over the high desert regions

of eastern California and Nevada on Saturday, where High Wind

Warnings, Watches, and Wind Advisories are in effect. As the

system weakens and pushes inland across the Intermountain West on

Sunday, showers and thunderstorms are possible across the northern

Great Basin.



Outside of areas experiencing rain showers (West Coast and

Northeast) early this weekend, well above average temperatures are

forecast to dominate the second weekend of April. High

temperatures 20 to 30 degrees above average are anticipated across

much of the Plains and Upper Midwest, with the highest anomalies

centered over the north-central United States. This equates to

widespread afternoon highs into the upper 70s and 80s. Low 90s

could also be felt throughout parts of the central and southern

Plains by Sunday.



Snell





Graphics available at

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



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