CLE issues Area Forecast Discussion (AFD) at Oct 14, 7:24 AM EDT294
FXUS61 KCLE 141124
AFDCLE
Area Forecast Discussion
National Weather Service Cleveland OH
724 AM EDT Wed Oct 14 2026
.WHAT HAS CHANGED...
No major changes to the forecast for this update.
&&
.KEY MESSAGES...
1) Showers and isolated thunderstorms are expected early this
morning with the passage of a cold front.
2) Strong low pressure expected Friday bringing widespread rain,
strong winds, and the coldest air of the season so far. Frost/freeze
headlines possible Friday night and likely Saturday night.
&&
.DISCUSSION...
KEY MESSAGE 1...
A weak low pressure system has moved off to the northeast this
morning with the associated cold front moving across Northern Ohio
currently. Along this front, showers and thunderstorms have moved
eastward into Northern Ohio and should continue east-southeast
through the morning hours. Temperatures and dewpoints across the
region are in the mid to upper 60s and upper 50s to low 60
respectively. Current Mesoanalysis has MUCAPE of around 500 J/kg or
less across the region and 0-6km bulk shear of 45-55 knots where the
thunderstorms are located. There's ample DCAPE out ahead of the
front of around 1000, including a plume over the central basin of
Lake Erie. With the lake being fairly warm still, around 18C, this
may assist in some thunderstorms over the lake becoming more
organized in the coming hours. With that being said, severe chances
are fairly low for this event and if a storm or two does become more
organized then strong winds will be the main impact.
The cold front will sag southward over the next several hours before
settling across the Ohio Valley by midday today. There will be
potential of moderate to heavy rain with it as it does push south,
though should be isolated. As the front settles, areas south of the
US30 corridor may see periodic showers through this evening.
Overall, not expecting much in terms of rain accumulation for the
region, with most areas staying around a few tenths to 0.25 inch.
Exception would be the areas south of the US30 corridor which could
see up to 0.50 inch. Rain will trend further south throughout the
day as high pressure begins to build in from the north. Brief period
of dry weather is expected until Thursday afternoon.
KEY MESSAGE 2...
An upper level trough will begin to deepen across the Canadian
Prairies Thursday night into Friday and push eastward into the Great
Lakes region by Friday afternoon. The associated surface low
pressure system will develop across the Mid-Mississippi Valley
Thursday evening morning northeast towards the Great Lakes. The cold
front that settled across the Ohio Valley today will lift north as a
warm front Thursday evening into Friday night. Showers and
thunderstorms will develop along this warm front and move into
Western Ohio by Thursday evening, moving eastward into Friday. Given
the timeframe the warm front lifts north, there will be little
instability across the region and a low level inversion setting up
with weak lapse rates. Though, low level winds will be fairly strong
behind the front as the surface low begins to rapidly deepen. Low
level winds will be 40-50 knots with 0-6km bulk shear around 50-60
knots. With this, isolated strong to severe wind gusts will be
possible into early Friday morning.
The surface low pressure will continue to deepen throughout the day
Friday as it moves eastward through the Great Lakes. The associated
cold front will pass west to east across the region during the day
Friday as well and should be clear of the CWA by Friday evening.
Severe weather is not expected with the cold front as it moves
through. There may be some lingering lake effect rain across
Northeastern Ohio and Northwestern Pennsylvania into early Saturday
morning with the northerly flow. Some snowflakes could be mixed in
as well depending on how quickly the precipitation moves out.
Though, given the rapidly deepening low pressure system, the
pressure gradient will increase behind and winds increase as well.
Winds will be 15-25 MPH with gusts over 40 MPH from midday Friday
through the early overnight hours behind the cold front. CAA across
the region will help in mix down the strong low level winds. Winds
may reach advisory criteria briefly Friday evening, main areas will
be along the lakeshore from Lorain County eastward and in
Northwestern Ohio. Will need to assess the need for an advisory in
in the coming days.
With the strong CAA behind the cold front and low pressure system,
it will bring in the coldest air of the season so far. Overnight
lows Friday night will be in the mid to upper 30s across much of the
region. Areas across far Northeastern Ohio and Northwestern
Pennsylvania may reach freezing temperatures. Widespread Frost
Advisories and targeted Freeze Warnings will likely be needed for
that night. Winds may be the a factor keeping frost from occurring
widespread as they will still be elevated 10-15 MPH for most of the
overnight period. Saturday night will bring more widespread
temperatures of near or below freezing. Highest probabilities of
temperatures at 32 degrees or below will be east of the I-71
corridor and away from the lakeshore. Winds will have calmed more at
this point, and with high pressure building in with clearing skies,
confidence is higher in widespread frost/freeze headlines for this
period.
With the high pressure building into the region on Sunday,
temperatures will begin to moderate back to a more seasonal level to
start next week. Dry weather is also expected from Sunday through
early next week.
&&
.AVIATION /12Z Wednesday THROUGH Sunday/...
A cold front currently resides across far northern Ohio with
showers and thunderstorms across much of the area. As the cold
front sags southward, precipitation chances will as well, with
low ceilings (700-1,500 ft) filling in north of the front. After
this morning's precipitation departs, there will be a few hours
of dry weather before isolated to scattered rain showers return
near and south of the front this afternoon, mainly along and
south of US-30. A brief period of ceilings below 500 ft and
visibilities below 2 SM is possible just behind the cold frontal
passage, especially at KMFD and KCAK. Ceilings should primarily
becoming a mix of MVFR and VFR by late afternoon, through the
rest of the TAF period.
Outlook...Intermittent non-VFR is likely Thursday afternoon
through Friday night with wind gusts exceeding 30 knots on
Friday.
&&
.MARINE...
Winds across Lake Erie are currently out of the north at 10-15 knots
after a cold front passed north to south early this morning. Winds
will increase throughout the day to 10-20 knots and veer to be more
out of the northeast. Waves will briefly build as well to around 3
feet west of the Island to Lake County. By Thursday morning, winds
will have shifted to be out of the east at 10-15 knots, then shift
out of the south late Thursday evening as a warm front moves north
over the lake. A strong low pressure system is expected to move
north of Lake Erie early Friday morning dragging a cold front across
the lake through Friday afternoon. Winds will shift to be out of the
northwest behind the cold front and increase as the low pressure
system deepens rapidly to the northeast. Winds will be 25-30 knots
across the lake beginning Friday midday through Saturday morning.
Gale force winds will be possible from the Islands eastward through
Conneaut, OH late Friday afternoon through early Saturday morning. A
combination of Small Craft and Gale Warning headlines will be needed
beginning early Friday morning through Saturday afternoon.
High pressure will build in Saturday afternoon with winds and waves
beginning to diminish. There will still be a moderate pressure
gradient across the lake into early next week, so winds will stay
between 10-20 knots out of the southwest through Monday.
&&
.CLE WATCHES/WARNINGS/ADVISORIES...
OH...None.
PA...None.
MARINE...None.
&&
$$
DISCUSSION...23
AVIATION...Saunders
MARINE...23
Source:
CLE issues Area Forecast Discussion (AFD) at Oct 14, 7:24 AM EDT---------------
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