Area Forecast Discussion
Issued by NWS Cleveland, OH

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FXUS61 KCLE 271747
AFDCLE

Area Forecast Discussion
National Weather Service Cleveland OH
147 PM EDT Sat May 27 2017

.SYNOPSIS...
A weak area of low pressure will move east through the Ohio
Valley today while high pressure remains to the north over lower
Ontario. Low pressure over the central plains will then move
northeast extending a warm front over the area Saturday night
before moving over the area on Sunday. This low will depart the
area by Monday morning dragging a cold front behind it.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
Cloud cover should slowly dissipate across inland locations
this afternoon with sunny conditions near the lakeshore. Had to
nudge highs up slightly to reflect current trends.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH TUESDAY NIGHT/...
The surface low over the central plains will trek northeast and
will allow for the warm front to move north allowing for the
next round of precipitation on Sunday. The timing of the warm
front and surface low have slowed a bit so precipitation will
likely not begin in the area until after daybreak on Sunday.
Taking a good look at some of the hi-res models, it seems that
the area will get two round of precipitation with the first
being another round of decaying convection this time from
Saturday`s severe weather over the middle Mississippi river
valley. Once the first round clears, the second round will be
with the surface low and the subsequent cold front. It there is
sufficient time for the atmosphere to recover, there is the
potential for some more robust storms, but there are still
plenty of ifs at this point in time. Temperatures for Sunday
look seasonable with convection counteracting any warm air
entering the region.

The surface low that impacts the area for Sunday will be out of
the area for Monday so a dry forecast seems reasonable at this
time for the holiday. However, this low begins to stall and
deepen over Ontario and is progged to extend a wave of energy
through the area on Tuesday, giving the region another chance
for some rain. Tuesday doesn`t seem like a washout at this point
but some of this rain may linger into the long term forecast
period as well. Temperatures for Monday and Tuesday also look to
be around normal in the 70s with largely neutral advection over
the area.

&&

.LONG TERM /WEDNESDAY THROUGH FRIDAY/...
The long term brings us into the first part of June. Temperatures
will still fall short of normals, but not by too much, with an
upper trough that we cannot shake across the Great Lakes and
northwest flow aloft across the local area. A trough moves
across the lower lakes for Wednesday with another possible
brushing far NE OH/NW PA Thursday. So, low precip chances remain
for Wednesday, but the remainder of the work week appears to be
dry for now. By Friday surface high should be more centered
over the Ohio Valley with the low and troughiness beginning to
pull out across eastern Canada.

&&

.AVIATION /18Z Saturday THROUGH Thursday/...
Still some MVFR ceilings across inland locations through 20z or
so. Then all locations should be VFR. Will keep a 35000-4500
foot ceiling across inland locations until late afternoon.
Otherwise light east winds are expected for inland locations.
Northerly winds are expected closer to the lakeshore. Winds at
all sites will become southeast overnight but speeds should
remain under 10 knots. Showers and thunderstorms will move into
the region from the southwest as a warm front lifts across
northern Ohio on Sunday. Showers and thunderstorms may reach
KFDY area around 13z then slowly spread northeastward into the
afternoon. Cold front arrives during the evening with another
round of thunder possible.

OUTLOOK...Areas non-VFR conditions Sunday night with
showers/thunderstorms. Non-VFR again possible Monday night
through Thursday in showers/thunderstorms as an upper level
trough persists over the central Great Lakes.

&&

.MARINE...
While a weak low crosses central Ohio today, high pressure will
reside across the lake with fair conditions after this mornings
showers pass. This will continue to be the case into Sunday morning.
On Sunday, though, low pressure will track across IL/IN and toward
the western basin of the lake by evening.  East-northeast winds will
come around to the south and then shift to the west Sunday night.
Winds are not overly strong, but do pick up Sunday night in the
wake of the cold front. The lake will remain fairly stable
limiting the winds Monday and Tuesday, but the possibility
exists for small craft advisory conditions with the west-
southwest flow across the far east end. A trough is expected to
cross the lake for Wednesday.

&&

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

&&

$$
SYNOPSIS...Sefcovic
NEAR TERM...Mullen
SHORT TERM...Sefcovic
LONG TERM...Oudeman
AVIATION...Mullen
MARINE...Oudeman


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