/Issued 4:19 PM CDT, Saturday, July 27, 2013/
*850mb temperature analysis for 18z or 1 PM Today July 27, 2013. Note how widespread the blue colors are across the Upper Midwest/Western Great Lakes Today, this represents temperatures of +2 to +4C at 5000 feet, also note the darker blue colors in parts of Northern Wisconsin and Western Upper Michigan This Afternoon, those are 0C 850mb temperatures, that’s unheard of for late July. (Source, RAP model)
*Plenty cold at 500mb (18000 feet) too with temperatures of -18 to -20C across much of the Upper Midwest. BRR! (Source, RAP model)
Source: National Weather Service Duluth, Minnesota
Record low maximum temperature at International Falls, MN on July 26th. The high temperature was 57 degrees which broke the previous record low maximum temperature of 62 degrees which was set in 1950.
Today’s Weather Summary for Northeast Minnesota and Northwest Wisconsin
An unseasonably cold airmass continues to cover the Northland for a 2nd day in a row. High temperatures Today were only in the upper 40s and 50s which is at least 15-25 degrees colder than it should be at this time of year. Even more remarkable are the 850mb (5000 feet) temperatures which ranged from +1 to +5C as of 4 PM Today, that is very cold for late July. An unusually strong upper low/trough maintains it’s hold on our area Today which resulted in gray skies and some rain at times. Winds were out of the north or northwest at 10 to 25 mph.
*Here’s a 12 hour visible satellite loop from Today. Note the pinwheeling nature to the clouds in Minnesota, Wisconsin and Upper Michigan Today. An unusual July day. (Source, Unisys Weather)
Forecast Discussion for Northeast Minnesota and Northwest Wisconsin
Short Term Forecast – Confidence: High.
Tonight (July 27th)
Mostly cloudy skies are forecast to continue Tonight with some light rain and drizzle at times. Lows will be in the 40s to around 50 degrees, but if skies can clear out enough then some 30s are certainly possible. Winds will be out of the north or west at 5 to around 20 mph.
Sunday and Sunday Night (July 28th)
The weather should improve at least a little bit as the upper level low begins to pull farther away from the Northland. Partial sunshine is expected on Sunday with a few showers still possible, mainly in Northwest Wisconsin. Highs Tomorrow will be in the 60s, possibly even a few lower 70s in Northcentral Minnesota. Lows Sunday Night will be in the 40s and 50s. West or northwest winds are forecast at 5 to around 20 mph.
Extended Forecast – Confidence: High.
Monday through Wednesday (July 29th-31st)
Temperatures look like they will trend back toward where they should be for this time of year as we see more of a westerly flow develop vs. a NNW flow. High temperatures are expected to be in the 70s Monday-Wednesday, might even see a few spots climb toward 80 Tuesday or Wednesday. Lows Monday Night and Tuesday Night will mainly be in the 50s. A few showers are possible on Tuesday, otherwise this period looks generally dry.
Long Range Forecast – Confidence: High.
This entire period is looking mainly dry at the moment. There will be a low pressure system passing west/south of the Northland late next week (1st-2nd) but right now it looks like the majority of the rain/thunder would stay south and out of our area. Near to below average temperatures are forecast during this period.
5 DAY FORECAST FOR DULUTH/SUPERIOR
.Tonight… Considerable cloudiness. Light rain and drizzle at times, mainly before Midnight. Low 42 to 47. Wind north to northwest at 10 to 20 mph.
.Sunday… Partial sunshine. High 65 to 70. Wind northwest at 10 to 20 mph.
.Sunday Night… Partly cloudy. Low 45 to 50. Wind west at 5 to 15 mph.
.Monday… Partly cloudy. High 70 to 75.
.Monday Night… Partly to mostly cloudy. Low 50 to 55.
.Tuesday… A few showers possible. Partly sunny. High 70 to 75.
.Tuesday Night… Partly to mostly cloudy. A few showers possible. Low 55 to 60.
.Wednesday… Partly sunny. High 73 to 78.
Normal temperatures for Today
Sunrise Sunday: 5:44 AM CDT
Sunset Sunday: 8:45 PM CDT