740 FXUS61 KCLE 182003 AFDCLEArea Forecast Discussion National Weather Service Cleveland OH 403 PM EDT Thu Sep 18 2025
.SYNOPSIS... High pressure briefly weakens tonight and Friday, allowing a backdoor cold front to move southwest across the area during the day Friday. High pressure builds back into the Northeast for Saturday. A warm front lifts across the area Saturday night and Sunday.
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.NEAR TERM /THROUGH FRIDAY NIGHT/... The near term forecast period will remain quiet with fair weather conditions. High pressure is over the Ohio Valley this afternoon and bringing another nice, sunny afternoon. High temperatures will top out in the upper 70s to upper 80s across the area. Mostly clear skies are expected tonight, but there could be some patchy fog again by sunrise Friday morning. Overnight low temperatures will be in the middle 50s to around 60 degrees.
A backdoor cold front will slide southwestward across the area on Friday. Moisture is very limited with this front. There will be a slight increase in clouds Friday with the cold frontal passage. High temperatures will a greater range from north to south on Friday with middle to upper 70s closer to the lakeshore and middle to upper 80s south of the Highway 30s corridor. High pressure from southern Ontario will build down over the eastern Great Lakes Friday night. Overnight low temps will range from the upper 40s over northwest Pennsylvania, lower to middle 50s over northeast Ohio, and middle to upper 50s over northwest Ohio.
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.SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... The weak front will stall out across northwest and central Ohio by Saturday morning. There will be an increase in high and mid level cloudiness on Saturday. Afternoon temperatures Saturday will again be warm ranging from the upper 70s to upper 80s.
An upper level trough will move eastward from the northern Plains into the Upper Midwest and western Great Lakes region Saturday and Saturday night. In response to the southerly to southwesterly flow ahead of that upper level trough, the stalled front will lift back northward across the area as a warm front Saturday night. There could be a slight chance for an isolated shower or two with the warm front.
By Sunday, the Upper Ohio Valley and Great Lakes region will be in a broad southwesterly flow aloft and a light southerly flow near the surface. Moisture levels will also start increase by Sunday. POPs will increase 20 to 30 percent on Sunday for a few widely scattered showers and isolated thunderstorm. High temperatures Sunday will be in the lower to middle 80s areawide due to the light southerly flow. A weak cold front will slowly slide southeastward into the Great Lakes region Sunday night. Ahead of that front, our rain chances will also increase between 40 and 60 percent later Sunday night.
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.LONG TERM /MONDAY THROUGH THURSDAY/... The weather pattern is now looking a little more unsettled and better rain chances for early and middle of next week. A weak front will stall out somewhere over the Ohio Valley or Lower Great Lakes region early next week. There will be several mid level disturbances in the westerly flow that will track across the Ohio Valley and interact with this stalled frontal boundary. The higher POPs will be Monday and Tuesday. The forecast confidence level is lower for the middle of next week and lesser POPs at this time. Average QPF for early to middle of next week ranges from 0.50"to 1.25" which has increased with the latest forecast guidance. Temperatures for early next week will remain above average in the middle to upper 70s.
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.AVIATION /18Z Thursday THROUGH Tuesday/... At the surface, a ridge extends from New England for the time being. A weak and overall moisture-starved cold front should sweep S`ward through our region between ~09Z/Fri and ~16Z/Fri. Behind the front, another ridge builds from northern ON and vicinity through 18Z/Fri. Ahead of the front, our regional surface winds trend variable in direction and around 5 knots. However, a lake breeze around 5 to 10 knots will impact locations within several miles of Lake Erie until ~00Z/Fri, including KCLE and KERI. Behind the front, primarily N`erly to NE`erly winds around 5 to 10 knots are expected.
Dry weather is expected through the TAF period, including during the passage of the weak and overall moisture-starved cold front. Along and especially behind the surface front, scattered to broken low clouds based near 3kft to 5kft AGL are expected. KERI has the greatest potential to experience a MVFR ceiling due to the low clouds. Surface visibility will be mainly VFR through the TAF period. However, localized mist/fog with associated MVFR or lower visibility are forecast between ~09Z/Fri and ~13Z/Fri in interior far-NE OH and NW PA, including at KYNG.
Outlook...Dry weather and VFR expected through Saturday. Periodic showers and thunderstorms with non-VFR expected this Saturday night through Tuesday.
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.MARINE... Wind speeds around 5 to 10 knots and waves of 2 feet or less are expected through tonight. A ridge extends from New England and winds remain variable in direction for the time being. However, winds trend onshore through this early evening due to a lake breeze. During this evening through the wee hours of Friday morning, a weak cold front will drift S`ward across Lake Erie and be followed by a ridge building from northern ON and vicinity. Variable winds ahead of the front become NW`erly behind the front and veer quickly to NE`erly in response to the building ridge.
Wind speeds around 5 to 15 knots are expected during most of Friday through Saturday night. However, winds as strong as 15 to 20 knots are expected Friday night into Saturday. NE`erly to E`erly winds through Saturday become SE`erly Saturday night as the aforementioned ridge continues to affect Lake Erie and the parent high pressure center moves from northern ON toward ME. Waves of 3 feet or less on Friday build to as large as 3 to 6 feet Friday night into Saturday, especially between roughly the The Islands and Long Point, ON. A Small Craft Advisory will probably be needed. Waves should subside to 3 feet or less Saturday night as winds ease.
A warm front will drift N`ward across Lake Erie Sunday through Sunday night, which will cause SE`erly winds around 5 to 15 knots to veer to S`erly. However, winds should flirt with 20 knots at times Sunday night. Primarily S`erly to SW`erly winds around 5 to 15 knots are expected Monday through Tuesday as a separate ridge builds from the southern Appalachians. These winds should flirt with 20 knots at times Monday morning. Waves of mainly 3 feet or less are expected, but occasional 4 footers are likely Sunday night into Monday morning, especially in open U.S. waters.
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.CLE WATCHES/WARNINGS/ADVISORIES... OH...None. PA...None. MARINE...None.
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SYNOPSIS...77 NEAR TERM...77 SHORT TERM...77 LONG TERM...77 AVIATION...Jaszka MARINE...Jaszka
NWS CLE Office Area Forecast Discussion