CLE issues Area Forecast Discussion (AFD) at Sep 12, 1:39 AM EDT813
FXUS61 KCLE 120539
AFDCLE
Area Forecast Discussion
National Weather Service Cleveland OH
139 AM EDT Fri Sep 12 2025
.SYNOPSIS...
High pressure continues to build across the Great Lakes into the Mid-
Atlantic region through Saturday. A cold front will move south
across the region on Sunday with another area of high pressure
building across the Great Lakes region through next week.
&&
.NEAR TERM /THROUGH TODAY/...
Quiet and dry weather will persist through the near term as high
pressure gradually builds east into Quebec. Overnight lows tonight
will drop into the upper 40s to lower 50s under a clear sky. Can't
rule out a brief window of patchy fog early Friday morning under
light and variable winds. Afternoon highs will rebound into the
upper 70s to lower 80s by Friday afternoon. Dew points in the upper
40s to lower 50s will lead to low relative humidity levels in the 30-
40% range on Friday. Northerly winds increase along the lakeshore as
a lake breeze sets up Friday afternoon and early evening. Slightly
warmer on Friday night with overnight lows settling in the mid
50s.
&&
.SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/...
Surface high pressure will be east of the local area as it sets
up along the Atlantic Coast by Saturday. High temperatures will
once again rise into the upper 70s to lower 80s on Saturday
afternoon. By Saturday night a weak cold front will approach the
eastern Great Lakes from the north. The front will cross the
local area on Sunday with another area of high pressure building
overhead behind it. The precipitation forecast associated with
the front has trended drier given limited low level moisture.
Warmer on with highs ranging between the upper 70s in Northwest
Pennsylvania to the upper 80s along the I-75 corridor. Low
temperatures each night will settle in the mid 50s to lower 60s
on Saturday night.
&&
.LONG TERM /MONDAY THROUGH THURSDAY/...
High pressure returns to the region leading to another window of
prolonged quiet and dry weather. High temperatures will generally
rise into the low to mid 80s. Some spots along and west of I-71 may
rise into the upper 80s. Low temperatures each night will settle in
the mid to upper 50s through the week.
&&
.AVIATION /06Z Friday THROUGH Tuesday/...
Predominantly VFR will continue through the TAF period. There
will be some patchy radiation fog this morning, mainly in river
valleys and more low-lying/outlying areas. Maintained the brief
window of MVFR vsby in BR at TOL 9-13z this morning, otherwise
am not expecting restrictions at TAF sites. A bit of high
cirrus will spread in from the northwest late today.
Winds remain light and variable overnight. Winds will generally
be out of the north to northeast at <7kt during the day Friday,
but with up to 10kt during the afternoon and early evening at
CLE and ERI due to a lake breeze. Included lines at CLE and ERI
to show the development and dissipation of this lake breeze.
Outlook...Mainly VFR expected through Tuesday. Low chance of
non-VFR from isolated rain showers Saturday night into Sunday.
&&
.MARINE...
Tranquil marine conditions are expected to continue through at
least the middle of next week. High pressure to our east is in
control today, leading to light/variable winds turning more
northerly in the U.S. waters at up to 10kt this afternoon due to
lake breeze development. Expect winds to turn more southeasterly
and offshore tonight due to land breeze development. A
weakening cold front will approach the lake from the north
Saturday before dissipating by Sunday. Winds will likely turn
more southerly Saturday and Saturday night ahead of this front,
remaining <10kt. High pressure to our northeast will then
largely control winds over the lake Sunday through the middle of
next week. Winds will generally be east-northeast, shifting
more northeasterly each afternoon due to lake breeze development
and a bit more east-southeast each night due to land breezes.
The "enhanced" northeast winds with the lake breezes Monday-
Wednesday could briefly reach 15kt due to a strong lake-land
temperature differential and favorable pressure gradient, which
is enough to build some chop. Otherwise, waves are expected
remain 2 feet or less through the middle of next week.
&&
.CLE WATCHES/WARNINGS/ADVISORIES...
OH...None.
PA...None.
MARINE...None.
&&
$$
SYNOPSIS...13
NEAR TERM...13
SHORT TERM...13
LONG TERM...13
AVIATION...Sullivan
MARINE...Sullivan
Source:
CLE issues Area Forecast Discussion (AFD) at Sep 12, 1:39 AM EDT---------------
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