Area Forecast Discussion
Issued by NWS Cleveland, OH

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FXUS61 KCLE 211354
AFDCLE

Area Forecast Discussion
National Weather Service Cleveland OH
954 AM EDT Mon Sep 21 2020

.SYNOPSIS...
High pressure over New England will ridge westward across the region
through the day. The high will then shift to just south of the
Ohio River Valley on Tuesday and remain there through Wednesday
night. A weak frontal boundary may drift as far south as the
eastern end of Lake Erie on Friday.

&&

.NEAR TERM /THROUGH TUESDAY/...
No changes to the forecast with the morning update as quiet
conditions continue across the region.

Original discussion...
High pressure over New England will ridge westward across the
region through tonight. Patchy frost will be possible again
tonight. It will mainly be across the eastern CWA and maybe a
few of the protected lower lying areas. Otherwise a few passing
clouds are expected through Tuesday.

Slightly warmer today with highs ranging from the mid 60s`s to lower
70`s. Lows tonight will range from the upper 30`s to the upper 40`s.
Maybe a few spots along the lakeshore will remain in the lower 50`s.
Warmer on Tuesday with upper 60`s to mid 70`s expected.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/...
By the middle of the week, the region will continue to be dominated
by high pressure near the Mid-Atlantic region. Quiet weather will
remain over much of the eastern Great Lakes and Upper Ohio Valley
regions. Temperatures will slowly climb to slightly above seasonable
average by the middle of the week. Skies will continue to be mostly
clear to partly cloudy for the mid week time period.

&&

.LONG TERM /FRIDAY THROUGH SUNDAY/...
A weak mid level disturbance or weakness will move across the Ohio
Valley late Thursday night. This feature may bring some more clouds
but it looks too dry in the air column for any precip. The surface
flow becomes more southerly and starts to bring in moisture from the
Gulf of Mexico later in the week. A deep upper level trough begins
to develop across the northern U.S. by Saturday and continues to dig
across the Great Lakes and Ohio Valley on Sunday. A stronger cold
front will move into the region late Saturday night into Sunday.
Showers will become likely with isolated thunderstorms also
possible for the weekend. Temperatures ahead of the front, in
the warm sector, will be above average in the upper 70s to
maybe lower 80s.

&&

.AVIATION /12Z Monday THROUGH Friday/...
A few high clouds may drift across the region through the TAF
period but it will be VFR. Light winds tonight become southeast
at 5 to 10 knots late morning through the afternoon.

Outlook...VFR conditions expected.

&&

.MARINE...
High pressure remains over the region and the lake for much of this
week. Winds today will be light from the east to southeast at 5
to 10 knots. Winds will shift to more southwesterly on Tuesday
at 5 to 10 knots. Waves should remain on the lower side today
and Tuesday. Southwesterly to southerly winds of 5 to 15 knots
will continue on Wednesday through Friday. Winds will be mainly
offshore so waves will remain on the lower side this week.

&&

.CLE WATCHES/WARNINGS/ADVISORIES...
OH...None.
PA...None.
MARINE...None.

&&

$$
SYNOPSIS...MM
NEAR TERM...Greenawalt/MM
SHORT TERM...Griffin
LONG TERM...Griffin
AVIATION...MM
MARINE...Griffin


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