Prognostic Meteorological Discussion
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000
FXUS01 KWBC 190800
PMDSPD

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
359 AM EDT Thu Apr 19 2018

Valid 12Z Thu Apr 19 2018 - 12Z Sat Apr 21 2018

...Late season snowfall accumulations expected from the Middle
Mississippi Valley into the Lower Great Lakes and interior New
England...

...Dry and windy conditions will significantly increase the threat
for wildfire production over the Four Corners into the High
Plains...

The low pressure system that brought late season snow to a large
portion of the Upper Mississippi Valley on Wednesday will cross
the Appalachians and track offshore today and through the end the
week. Some lighter snow may linger across the lower Great Lakes,
Ohio Valley and interior Northeast. Surface high pressure will
settle in across much of the central U.S., keeping temperatures on
the cooler side for mid-April with readings as much as 10 to 20
degrees below normal.

Another round of snow can be expected for portions of the Central
and Southern Rockies as a strong Pacific system moves through the
Desert Southwest- focusing the highest snow totals of 6 to 10
inches in the highest peaks. Thunderstorms may develop along and
ahead of the surface front once is approaches the Plains; however,
this will trigger dry, gusty wind to race across the Southern
Plains. This will keep the critical to extreme risk for fire
weather across this region.

Rain and some elevated snow will return to portions of the Pacific
Northwest by the weekend as a system approaches from the Gulf.

Campbell


Graphics available at
www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
$$





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