/Issued 7:38 PM CDT, Sunday, July 28, 2013/
*A rare late July frost advisory for areas in blue, this is in effect for late Tonight and early Monday AM. (Source, NWS hazards map)
Source: National Weather Service Duluth, MN
Northern Minnesota including the Iron Range and Arrowhead.
2 AM until 7 AM CDT Monday.
Northern Itasca MN
Northern and Central St. Louis MN
Northern Lake MN
Northern Cook MN
Some cities included:
International Falls…Bigfork…Togo…Orr…Crane Lake…Ely…Virginia…Hibbing…and Isabella.
Low temperatures falling into the lower and middle 30s resulting in areas of frost late Tonight and early Monday Morning.
Sensitive plants will be prone to damage or be killed.
A frost advisory means that frost is possible. Sensitive outdoor plants may be killed if left uncovered.
Temperature and precipitation report for Duluth, MN (Airport location)
July 21-27, 2013
Note: I highlighted the high temp departures on the 26-27, pretty extreme for late July.
7/21: 72 degrees/5 degrees below normal
7/22: 83 degrees/6 degrees above normal
7/23: 75 degrees/2 degrees below normal
7/24: 76 degrees/1 degree below normal
7/25: 81 degrees/4 degrees above normal
7/26: 61 degrees/16 degrees below normal
7/27: 56 degrees/21 degrees below normal
7/21: 51 degrees/5 degrees below normal
7/22: 56 degrees/Normal
7/23: 53 degrees/3 degrees below normal
7/24: 51 degrees/5 degrees below normal
7/25: 57 degrees/1 degree above normal
7/26: 49 degrees/7 degrees below normal
7/27: 49 degrees/7 degrees below normal
Total precipitation: 0.65″
*Last week’s temperature departure map. Amazing warmth 2 weeks ago and now an amazing cold snap on the 26th-27th. (Source, Midwest Regional Climate Center)
Last week’s precipitation departure map. Duluth saw about 50% of it’s average rainfall last week. (Source, Midwest Regional Climate Center)
Quite a difference in the amount of precipitation that Duluth and International Falls has seen this month…Details below
Total precipitation for July (ending on the 28th) 1.56″
Total precipitation since June 1st: 6.10″
Total precipitation since January 1st: 19.44″
International Falls, Minnesota:
Total precipitation for July (ending on the 28th) 7.39″
Total precipitation since June 1st: 8.99″
Total precipitation since January 1st: 21.37″
Source: National Weather Service Duluth, Minnesota
*Record low MAXIMUM temperature was tied at Duluth, Minnesota on July 27, 2013. The high temperature was 56 degrees tying the previous record cold high temperature last set in 1888.
*Record low MAXIMUM temperature was tied at International Falls, Minnesota on July 27, 2013. The high temperature was 59 degrees tying the previous record cold high temperature last set in 1973.
Weather Tidbits for Duluth, MN (Airport location)
-The 56 degree high temperature on July 27 was the coldest maximum temperature since June 5 (50 degrees)
-0.38″ of rain fell on July 27 which is the heaviest daily precipitation total so far this month and the heaviest daily precipitation total since June 23 (0.69″)
Today’s Weather Summary for NE Minnesota and NW Wisconsin
Slight improvements in the weather compared to the last 2 days. High temperatures were in the middle 60s to lower 70s and we actually saw at least a little bit of sunshine Today which is always a good thing. A few showers also continued at times, mainly over parts of Northwest Wisconsin. Winds were out of the north or west at 5 to around 20 mph.
Forecast Discussion for Northeast Minnesota and Northwest Wisconsin
Short Term Forecast – Confidence: High.
Tonight (July 28th)
Low pressure and an upper level trough will continue to exit to the east Tonight with high pressure moving into the Upper Midwest. Clear to partly cloudy skies can be expected Tonight with patchy late night fog. Scattered frost is even possible after Midnight, mainly over Northern Minnesota. Low temperatures will be in the 40s to around 50 degrees, but some 30s are expected over the Iron Range, Borderland, and Arrowhead of Minnesota. Winds will be out of the north or west at under 15 mph.
Monday and Monday Night (July 29th)
Highs Tomorrow will mainly be in the 70s under partly cloudy skies as high pressure controls our weather. Monday Night looks pretty quiet under partly to mostly cloudy skies with lows in the 50s to around 60 degrees. South or southwest winds are forecast at 5 to 15 mph.
Extended Forecast – Confidence: High.
Tuesday through Thursday (July 30th-August 1st)
A cold front will move through the Northland Tuesday/Wednesday. This front could bring some showers and isolated thunderstorms to the area especially from Tuesday late Afternoon into midday Wednesday. Highs are forecast to be in the 70s and lower 80s on Tuesday with mainly 70s for Wednesday and Thursday. Lows Tuesday Night will be in the 50s and 60s with lows Wednesday Night in the 40s and 50s.
Long Range Forecast – Confidence: High.
Near to below average temperatures are forecast through this period and it’s looking like a pretty mellow, quiet, tranquil period in terms of the weather.
*Northwest mid-upper level flow will be a common fixture this week. The map below is valid for Wednesday, July 31. (Source, Weather Prediction Center)
*This next map is valid for Sunday, August 3. Again not much change as a NW flow is locked in across Minnesota. Also of note is the “L” almost a polar vortex type feature which slides east from the Manitoba-Ontario border on Wednesday to Western Quebec 1 week from Today. No the airmass won’t be arctic here in Minnesota, in fact temperatures look pretty nice at least thru Tuesday, but all the true summer-time heat will remain locked over the Southern U.S. this week. (Source, Weather Prediction Center)
5 DAY FORECAST FOR DULUTH/SUPERIOR
.Tonight… Mostly clear. Low 40 to 45 Inland and in Superior. Closer to 50 in Downtown Duluth. Wind light and variable around 10 mph. Note: Record low temperature for Tonight is 42 degrees set in 1971 and 1925.
.Monday… Mostly sunny. High 72 to 77. Wind south to southwest at 10 to 15 mph.
.Monday Night… Partly cloudy. Low 50 to 55. Wind south to southwest at 5 to 15 mph.
.Tuesday… Partly sunny. High 75 to 80.
.Tuesday Night… Mostly cloudy. A few showers possible. Low 55 to 60.
.Wednesday… A few showers possible. Considerable cloudiness. High 70 to 75.
.Wednesday Night… Mostly clear. Low 50 to 55.
.Thursday… Partly cloudy. High 70 to 75.
Normal temperatures for Tomorrow
Sunrise Monday: 5:45 AM CDT
Sunset Monday: 8:44 PM CDT