769 FXUS63 KDLH 151120 AFDDLHArea Forecast Discussion National Weather Service Duluth MN 620 AM CDT Wed Oct 15 2025
.KEY MESSAGES...
- Temperatures gradually warm through the work week, with the warmest day on Friday with highs in the 60s and low 70s.
- Next chance for rain late tonight through Thursday with rain chances lingering through the weekend. Rainfall amounts of up to a half inch are possible.
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.DISCUSSION... Issued at 429 AM CDT Wed Oct 15 2025
Early morning showers/sprinkles over the area this morning will shift off to the east fairly quickly this morning. Cloud cover will linger with warm moist air advection continuing today into Thursday ahead of an upper level trough that is now over the southwestern CONUS. This upper trough will lift northeast through today and Thursday before pushing into Manitoba Thursday night/early Friday. This pattern continues the southwesterly upper level flow with warm moist air advection ongoing through Thursday night. With this, there will be another push of precipitation moving across the Northland beginning tonight, continuing through Thursday, then tapering off to scattered showers Friday as the cold front moves through the region. We wil then have scattered wrap around showers which linger into at least Saturday. Another effect of the extended period of warm air advection is the gradual warming trend. While we will be cool, mostly in the 50s today, temperatures warm into the 60s to low 70s for Friday. These temperatures will be a good 10 degrees above normal, but nowhere near records, which are in the 80s this time of year. Temperatures cool off for the weekend with the upper low now to the northeast and northwest flow bringing cooler air back into the area.
High pressure builds back into the area for early next week, keeping temperatures near normal. Precipitation chances should return by the middle of the week, depending on how quickly the next upper level trough pushes into the area. Confidence in the precipitation forecast for next week remains low at this point, with some pretty large differences between models.
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.AVIATION /12Z TAFS THROUGH 12Z THURSDAY/... Issued at 620 AM CDT Wed Oct 15 2025
Mostly VFR conditions persist at the terminals as of issuance time. There is an area of MVFR stratus just to the southwest which has pushed into KBRD, and should linger there today, with the stratus expanding once again after dark as another wave of precipitation begins to push into the area from the southwest, pushing into KHIB, KDLH and KHYR after 06z tonight, along with MVFR visibilities and -SHRA. While KDLH pulled a fake-out back at 05z and has returned to VFR, we have increasing confidence the IFR stratus will return around 06z tonight as the easterly flow persists and additional moisture should help produce the stratus.
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.MARINE /FOR NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR/... Issued at 429 AM CDT Wed Oct 15 2025
A ridge of high pressure building into the area will keep winds on the lighter side and generally out of the east to northeast today. As the high pressure slides east of the area, winds will veer southeast tonight into Thursday and begin to increase. Waves should remain 1 foot or less through Thursday, but as winds increase to 10 to 20 knots Thursday night into Friday and become more southerly, waves will build, especially along the North Shore. Conditions may become hazardous for small craft. A warm front will bring another round of showers to most of the lake during the day on Thursday, with precipitation chances lingering through Friday night.
For the open water discussion, refer to the NWS Marquette Area Forecast Discussion at weather.gov/mqt.
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.DLH WATCHES/WARNINGS/ADVISORIES... MN...None. WI...None. MARINE...None.
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DISCUSSION...LE AVIATION...LE MARINE...LE
NWS DLH Office Area Forecast Discussion