238 FXUS63 KAPX 091822 AFDAPXArea Forecast Discussion National Weather Service Gaylord MI 222 PM EDT Tue Sep 9 2025
.KEY MESSAGES...
- Aside from scattered light showers possible at times through Wednesday morning across parts of the eastern U.P., mainly dry weather with high temperatures in the 70s expected this week.
- Occasional shower/storm chances return this weekend into early next week.
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.SHORT TERM /THROUGH WEDNESDAY/... Issued at 220 PM EDT Tue Sep 9 2025
Pattern Synopsis/Forecast: Broad upper-level trough axis is situated from Hudson Bay southward through the upper MS valley down to the Gulf Coast this afternoon. This wave is expected to cross the forecast area late in the day Wednesday. A nearly stationary surface boundary is currently draped from western Quebec back across the western UP into southeast MN and northern IA. This boundary washes out on approach over the next 18 hours with expansive high pressure beginning to encompass much of the nation`s midsection.
Forecast Details: Isolated to scattered showers remain possible at times tonight into Wednesday morning across parts of the eastern U.P. with the highest PoPs favored west of Interstate 75 and more so west of M-123. Otherwise, variable cloud cover south of the bridge this afternoon with high temperatures area-wide ranging from the low- mid 70s. Tonight`s lows generally spanning the mid-40s to mid-50s.
Any lingering showers across the U.P. Wednesday diminish through midday/early afternoon with dry conditions anticipated area-wide thereafter. High temps in eastern upper in the upper 60s to near 70 while those near Saginaw Bay expected to approach 80.
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.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/... Issued at 220 PM EDT Tue Sep 9 2025
Pattern Forecast: Troughing aloft continues to trek east out of the western Great Lakes Wednesday night with higher heights building in from the west. Mid-upper level ridging expected to largely prevail through the weekend, potentially all the way through early-mid next week before beginning to break down. Surface high pressure dominates through at least Friday, and potentially beyond. However, uncertainty arrives late Friday into Saturday as a cold front surges south from low pressure near Hudson/James Bay and a warm front organizes upstream, tied to weak low pressure lee of the Rockies. Northern MI expected to be sandwiched between these two features with the best potential for some shower/storm activity associated with isentropic ascent in advance of that upstream warm front.
Forecast Details: Little in the way of sensible weather is expected Wednesday night through much of the day Friday with high temperatures favored to span the 70s area-wide under mostly to partly clear skies.
Chances for showers and perhaps a few rumbles of thunder arrive as early as Friday evening and continue at times into Saturday. While current trends suggest this time frame is far from a wash out, the bulk of what`s able to develop is favored west of I-75 associated with deeper moisture and forcing.
Generally tranquil conditions expected to return to round out the weekend into the start of next week -- again with high temperatures in the 70s under a mix of sun and clouds.
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.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/... Issued at 108 PM EDT Tue Sep 9 2025
VFR conditions prevail through the TAF issuance period. Better shower chances move in late tonight and continue through midday/ early Wednesday afternoon. Dry conditions are forecasted for the remaining sites with KCIU lagging subsequently. Breezy south- southwest winds become light tonight with sustained winds 5 knots or less through the period Wednesday, with occasional 10 knot gusts.
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.APX WATCHES/WARNINGS/ADVISORIES... MI...Beach Hazards Statement until 8 PM EDT this evening for MIZ095- 098. MARINE...Small Craft Advisory until 8 PM EDT this evening for LMZ323- 341-342-344>346. Small Craft Advisory until 4 PM EDT this afternoon for LSZ321.
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SHORT TERM...MJG LONG TERM...MJG AVIATION...NSC
NWS APX Office Area Forecast Discussion