textproduct: Gaylord

KEY MESSAGES

-High pressure continues overall quiet and dry conditions. Near record warmth builds this Saturday and Sunday.

-Seasonably normal temperatures with periodic rainfall chances return next week.

DISCUSSION

Issued at 258 AM EDT Fri Oct 9 2026

Pattern Synopsis:

Longwave 500mb troughing currently over the Northeastern U.S this morning continues to break down and progress downstream as low amplitude ridging begins to build across the central U.S. This pattern will support surface high pressure to build across the Great Lakes Region as 850 mb temperatures surge well above normal for early October. As a result of the efficient warm air advection from the south, surface temperatures will approach record breaking levels, with highs in the 70s for most parts of the CWA this weekend.

Conditions turn slightly more active for the rust belt at the start of next week as tropical moisture associated with Isaias is expected to track northward across the Mississippi Valley before being dragged across the lower Great Lakes Region. Most rainfall will likely remain south of the CWA, but areas around Saginaw Bay could observe some fragments of light stratiform rainfall Sunday night. The next chance of widespread rain chances remains towards the end of the forecast period as two waves originating from Alberta and the American Southwest make their way to the Midwest. Details remain blurry on amounts and potential impacts at this time, but moderate troughing will support rainfall to the CWA and temperatures falling back into the 50s around the Tuesday and Thursday timeframe. Forecast Details:

Today, Saturday and Sunday: Ongoing subsidence aloft will continue to build surface high pressure today. Patchy morning fog will begin to burn off in the morning hours followed by mostly sunny skies and highs in the 60s for Northern Lower while eastern upper remains in the upper 50s for most areas north of M-28. Light northwest winds turn to the southeast overnight into Saturday as aforementioned warm air advection commences and pushes low level temperatures well into the teens at 850mb. With efficient mixing to the surface this Saturday and Sunday, high temperatures will build well into the 70s for most parts of the CWA. Aforementioned breezy SE flow will create slight downloping processes across the Lake Michigan shoreline areas of Northern Lower, resulting in temperatures around 80.

Monday through Thursday Outlook: Long-range ensembles depict a small wave developing lee of the Canadian Rockies this weekend and making its way to the Midwest by Tuesday. Between weak forcing and deep southerly moisture remaining cut off, QPF amounts remain around a general tenth inch or less. More appreciable rain chances remain focused on Thursday's potential precipitation. Deeper troughing currently over the northern Pacific will deepen over the Southwest U.S. this weekend and lift across the northwoods at the end of the forecast period. Organization of this low-pressure system appears organized with a deep closed midlevel low pressure and an ideal Northeastern track of this system. Still too early to forecast details and potential impacts to the region, but we will continue to monitor this feature as we head into next week.

AVIATION /12Z TAFS THROUGH 12Z SATURDAY/

Issued at 556 AM EDT Fri Oct 9 2026

Isolated BR at KMBL will dissipate shortly after 12Z this morning, returning VFR conditions at all TAF sites through the entirety of the forecast period. Light winds will mainly be from the NW today before increasing and turning southeast, gusting to around 20 knots by 12Z Saturday.

APX WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...None.