565 FXUS63 KAPX 072324 AFDAPXArea Forecast Discussion National Weather Service Gaylord MI 724 PM EDT Sun Sep 7 2025
.KEY MESSAGES...
- Patchy/areas of frost tonight, focusing across the interior south of M-72.
- Temps rebound much of this week; showers possible Tuesday for some.
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.SHORT TERM /THROUGH MONDAY/... Issued at 306 PM EDT Sun Sep 7 2025
Pattern Synopsis and Forecast:
Trough axis shifts to the east tonight with precipitation chances waning. Sfc high pressure builds in from the northwest, the center focusing down state just south of northern MI. Thus, winds become calm tonight with mostly clear skies and radiational cooling attempting to aid in temperatures dropping to the frost point across the interior. Sfc high pressure slides to the east some on Monday with southwesterly flow leading to temperatures ~8 to 10 degrees warmer most areas.
Primary Forecast Concerns:
Frost Potential:
Only concern through the period will be the potential for cool temperatures/frost formation tonight. Couple of competing factors I think, one being low level moisture really never scours out. Thus, cooling could certainly be stifled by fog formation/low level saturation (patchy fog possible for typical/stubborn locales). That being said, when looking at some pieces of guidance/probs (NBM, internal probs) and the positioning of the high pressure system tonight, there could be a pocket of ~32-36F temps Crawford county southward. Even last night couple of locations dropped to 34-36 degrees, so tonight ~32-36 should not be out of the question, at least for a brief period. Thus, will have a frost advisory for portions of the interior (Kalk, Craw, Osc southward).
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.LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... Issued at 306 PM EDT Sun Sep 7 2025
Day 2-3 (Tuesday - Wednesday):
Corridor of warm and moist advection sets up across the Upper Midwest on Tuesday, although each subsequent model guidance run seems to try and shove this corridor of moisture and precipitation potential farther and farther northwest. Thus, shower and isolated thunderstorm potential does exist, the best potential will be across eastern upper. Where this most efficient corridor of precipitation sets up will likely see moderate rainfall (as is showing up in the model guidance). At this time this is not expected to be across the NWS Gaylord county warning area, instead shifted to the northwest. Showers potential may leak into portions of northwest lower MI as well.
Days 4-7 (Thursday - Sunday):
Upper level heights rise through the end of the period, although sfc frontal boundary settles beneath these heights aloft Thursday and Friday. Thus, the end of the week will be slightly cooler for northeast lower, but trends appear to favor a lesser magnitude of cooling with this feature (high pressure off to the northeast a little more). By the weekend temperatures begin to increase again with mid 70s to near 80 degrees for some. Too much uncertainty to discern any precipitation potential later in the period but later Friday into Saturday there`s at least a hint of that potential.
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.AVIATION /00Z TAFS THROUGH 00Z TUESDAY/... Issued at 722 PM EDT Sun Sep 7 2025
May see some late night/early morning MVFR producing fog/mist at KCIU and KMBL. Otherwise, looking for primarily VFR conditions under some passing high based cumulus/strato-cu and higher level clouds. No wind concerns through the period.
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.APX WATCHES/WARNINGS/ADVISORIES... MI...Frost Advisory from 2 AM to 9 AM EDT Monday for MIZ027>029- 032>035-041. MARINE...None.
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SHORT TERM...JLD LONG TERM...JLD AVIATION...MSB/NSC
NWS APX Office Area Forecast Discussion