Area Forecast Discussion
Issued by NWS Duluth, MN
Issued by NWS Duluth, MN
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045 FXUS63 KDLH 121826 AFDDLH Area Forecast Discussion National Weather Service Duluth MN 126 PM CDT Wed Aug 12 2026 .KEY MESSAGES... - Very slight chance for some sprinkles and light rain showers tonight into early Thursday morning. - Next best chance for precipitation Friday night into Saturday with scattered rain showers and thunderstorms possible across the Northland. - Near normal temperatures persist. && .DISCUSSION... Issued at 117 PM CDT Wed Aug 12 2026 Another round of fairly lackluster weather continues today. A cumulus field to the north of the International Border is producing some scattered rain showers in Ontario, which does have a low (<10%) chance to bleed over the border this afternoon and evening. This would lead to 0.01" of rain or less if it does occur. A heavier band of wildfire smoke aloft is preventing more cumulus fields from developing across a good portion of the Northland today. Overnight, a slug of moisture from the Dakotas is expected to move over central MN and WI, which could prompt some areas of scattered rain showers in the Northland, with the highest chances along the southern border of the CWA from the Brainerd Lakes area into NW WI. No severe weather is expected and even producing any thunderstorms might be tough. There is a lot of dry air preceding any of this precipitation and it will be losing support as it moves into the Northland, so it is likely that this activity would be scattered in nature with light rainfall amounts. As that area of moisture and associated weak shortwave push east through the day Thursday, it will likely continue to lead to areas of clouds and could even prompt a couple afternoon showers but confidence is very low on this occurring. No severe weather nor heavy rainfall is expected. Late week into the weekend, the upper level ridge to our south shifts east, with a shortwave disturbance running along the top of it. This is expected to bring an area of showers and thunderstorms to the Northland. Global ensembles show that overall this will probably be a mostly light rain for most - up to a couple tenths of an inch. However, if some thunderstorms are able to embed, a few lucky folks could see locally higher amounts around an inch. At this point, not expecting any severe weather at this time. There is some lingering uncertainty regarding the timing of this precipitation, which largely has to do with the timing of the broader ridge shifting east. Some models bring it in as early as Friday evening while others a much more delayed more into Saturday afternoon. As we remain on the north side of the ridge through the 7 day period, expect temperatures to stay largely right around normal with high temperatures in the 70s to mid 80s and overnight lows in the 50s and 60s. && .AVIATION /18Z TAFS THROUGH 18Z THURSDAY/... Issued at 117 PM CDT Wed Aug 12 2026 Largely VFR conditions are expected through the TAF period with light winds. Some patchy fog is possible a HIB overnight. Some light scattered rain showers could impact BRD early Thursday morning. && .MARINE /FOR NEARSHORE WATERS OF WESTERN LAKE SUPERIOR/... Issued at 117 PM CDT Wed Aug 12 2026 Light onshore breezes continue today and Thursday. A couple stronger gusts up to 15 knots could be possible Thursday afternoon at the head of the Lake. Some patchy dense marine fog is possible through the week, especially along the North Shore where the coldest water temperatures are. Much stronger northeast winds are expected to build Friday, with gusts up to 25 knots possible. A Small Craft Advisory may be needed. Areas of rain showers and thunderstorms will be possible Friday evening into Saturday. For the open water discussion, refer to the NWS Marquette Area Forecast Discussion at weather.gov/mqt. && .FIRE WEATHER... Issued at 117 PM CDT Wed Aug 12 2026 Drier weather continues through the rest of the week with afternoon RH dropping into the 35-45% range each day. There could be some sprinkles to scattered rain showers overnight tonight into Thursday morning, but any accumulations are likely to be less than a tenth of an inch. The best chance for that precipitation is from the Brainerd Lakes area into NW WI. Winds should remain fairly light, turning to become northeasterly Thursday with a few afternoon gusts up to 15 mph possible. Friday, expect easterly winds to continue with stronger afternoon gusts, especially along Lake Superior. Friday night into Saturday, a better chance for more widespread rain arrives with areas of rain showers and thunderstorms, but exact details are yet unclear. See the Fire Weather Forecast product for a more thorough breakdown of fire weather conditions. && .DLH WATCHES/WARNINGS/ADVISORIES... MN...None. WI...None. MARINE...None. && $$ DISCUSSION...Levens AVIATION...Levens MARINE...Levens FIRE WEATHER...Levens