/Issued 6:21 PM CDT, Thursday, July 26, 2018/
HRRR model (21z run, 7.26.2018)
Surface and upper level area of low pressure N/NE of Lake Superior late this afternoon with cyclonic flow occurring west of this system today. N/NW wind, weak cold air advection, clouds with isolated to scattered showers over the upper Midwest and western Great Lakes today.
Goes-16 visible satellite loop from Thursday, July 26, 2018.
Quite an impressive area of low pressure spinning north of Lake Superior today.
Heaviest rainfall on Wednesday was focused in parts of northwest Wisconsin where rainfall totals of 0.25 to 0.50″+ were reported. Much more isolated showers with much less rainfall across northern Minnesota on Wednesday.
European Computer Model (12z run from 7.25.2018)
Rainfall Totals for July 25-26, 2018 from 7 AM to 7 AM
7.2 SE Iron River, WI: 1.08 in
3 S Ashland, WI: 0.65 in
Ashland, WI: 0.55 in
7.8 SSW Poplar, WI: 0.40 in
Winter, WI: 0.37 in
4 W Clam Lake, WI: 0.36 in
Butternut, WI: 0.25 in
Hayward, WI: 0.17 in
International Falls, MN: 0.13 in
Babbitt, MN: 0.10 in
Northome, MN: 0.05 in
Duluth Airport: 0.01 in
Note: The Duluth Airport hit 70 degrees today (July 26) So the coldest high so far this month remains 69 degrees on July 1st, also every date but one so far this month has had a high temp of at least 70 degrees, the only date with a high temp cooler than 70 degrees (July 1st)
Isolated showers will continue to move S/SE through parts of the Northland through mid-evening, then mainly dry conditions overnight through Friday.
Partly to mostly cloudy skies tonight with partly to mostly sunny skies Friday. Lows tonight in the 40s and 50s, possibly a few 30s in the typical cold spots across northeast Minnesota. Warmest temps will be found near Lake Superior due to the warming influence of Lake Superior.
Highs Friday mainly in the 70s, and those 70s will likely carry over into Saturday and Sunday.
Should stay dry on Friday, but a few showers and thunderstorms could develop at times Saturday and Sunday with brief downpours possible if you get underneath one of those storms.
The pattern through Sunday will feature high pressure over the northern Plains with an upper level low over eastern Canada — NW flow aloft will remain in place across the upper Midwest between the high to our west and low to our northeast. A couple of disturbances rotating around the upper low could impact the upper Midwest this weekend, and with colder temps aloft and warmer temps near the surface, the atmosphere will become a bit unstable peaking during the afternoon/early evening hours, that is when we could see a few showers and thunderstorms develop in northeast Minnesota and northwest Wisconsin.
Normal Temperatures for July 27 at Duluth, Minnesota
Sunrise Friday: 5:43 AM CDT
Sunset Friday: 8:47 PM CDT