May 22, 2013
LONG TERM [Sunday through Thursday]...
The extended period begins with the local area under the
influence of zonal flow aloft at the leading edge of a broad but
amplifying trough. By late weekend, shortwave energy will dive
south through the Plains, amplifying the trough further. The upper
trough will then swing through the southeast Monday through
Tuesday before transitioning back to a more zonal pattern for
Wednesday. By Thursday, upper flow will amplify once again in
response to another shortwave passing over the Gulf Coast states.
At the surface, high pressure will remain in control through the
weekend with negligible rain chances. The first of the two
aforementioned shortwaves will generate an area of low pressure
across the Midwest, trailing a cold front south through the Ohio
and Mississippi Valley`s. This front will pass through the Tri-
State area Monday through Tuesday bringing with it a decent chance
for showers. High pressure will build in on Tuesday afternoon,
ushering in a brief period of dry conditions before the next
shortwave brings another weather system our way late next week.
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