641 FXUS61 KCLE 150541 AFDCLEArea Forecast Discussion National Weather Service Cleveland OH 141 AM EDT Mon Sep 15 2025
.SYNOPSIS... High pressure over eastern Canada continues to extend into the eastern Great Lakes. This feature will remain influential over the region through mid-week it moves through the New England states and off the Canadian Maritime provinces.
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.NEAR TERM /THROUGH TONIGHT/... High pressure over eastern Ontario and western Quebec will continue to persist southwest into the local area through Monday. This feature in conjunction with a high amplitude ridge will allow for dry weather to continue through Monday night. The main concern through the period will be some increasing east to northeast winds for Monday with a slightly stronger pressure gradient over the region. Some residual moisture and prolonged late-summer nights will allow for some patchy fog in typical valley locations. High temperatures will be in the 80s.
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.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... The forecast will remain status quo with high pressure to the northeast and some return flow into the region. This will allow for some weaker southerly winds with temperatures in the 80s. Better moisture into the region will allow for some more potent afternoon cumulus clouds to form, but dry weather remains expected.
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.LONG TERM /THURSDAY THROUGH SUNDAY/... Quiet weather should continue for Thursday and Friday with some upper level ridging remaining over the region and weak high pressure over the central Appalachians. With the coastal low pressure system finally leaving the Carolinas, a more optimal setup will allow for temperatures and moisture to slightly creep up and Thursday will be the warmest day of the week with mid- to-upper 80s. For Friday, the moisture will translate to more afternoon cloud cover and limit temperatures slightly to the mid 80s.
For the weekend, the forecast will continue to feature some 20-30% PoPs for rain as an upper trough and surface low pressure system will attempt to approach the region from the west. However, there remains very low confidence in the progression of the late week pattern, as this upper trough will need to fully erode the upper ridge that has promoted the quiet weather across the region. If the ridge holds, more dry weather will just continue, whereas if this next system arrives, then there will be some rain showers, but unfortunately nothing drought- breaking for the area. If this system moves through the region, then highs will be cooler in the 70s. If it holds off, then more 80s will be expected.
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.AVIATION /06Z Monday THROUGH Friday/... High pressure over eastern Canada will continue to influence the local area with mainly VFR conditions and clear skies. There is a chance of a little ground fog towards sunrise, mainly at TOL but can not rule out another site experiencing a brief window of MVFR. At TOL, look for some restrictions to visibility in the 10-12Z window, and could briefly drop to IFR.
Otherwise, northeast winds will be 6 knots or less overnight, then increase this afternoon to 6-10 knots. Locally higher winds of 12-15 knots are possible this afternoon at CLE and ERI as flow increases off Lake Erie. A few gusts around 20 knots may also occur between 18-22Z.
Outlook...Mainly VFR conditions are expected although patchy MVFR visibilities are possible each morning between roughly 08-12Z.
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.MARINE... High pressure will maintain influence over Lake Erie through the early part of the week, resulting in primarily east/northeast winds through Tuesday. Winds will increase to 10 to 20 knots in response to a tightening pressure gradient Monday afternoon into early evening with the higher winds closer to 20 knots anticipated in the central basin from roughly Vermilion OH to Willowick OH. Waves will likely reach 2 to 4 feet for a few hours Monday afternoon into Monday evening, which could necessitate a brief Small Craft Advisory/Beach Hazards Statement especially if winds/waves trend higher. Opted to hold off on headlines with this update due to the marginal winds/waves, but headlines may be issued in a future update.
Winds will gradually diminish Monday night with daily lake/land breezes and winds 12 knots or less anticipated Tuesday through Thursday. Winds/waves will likely increase as a cold front moves south across the lake on Friday.
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.CLE WATCHES/WARNINGS/ADVISORIES... OH...None. PA...None. MARINE...None.
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SYNOPSIS...Sefcovic NEAR TERM...Sefcovic SHORT TERM...Sefcovic LONG TERM...Sefcovic AVIATION...10 MARINE...15
NWS CLE Office Area Forecast Discussion