/Issued 5:28 PM CDT, Friday, October 12, 2018/
Note: Low temperatures Friday morning fell to 32 degrees or colder along and north of that white line on the map — Widespread cold for mid October!
18z NAM model 10-12-2018
500mb vorticity forecast valid from 7 AM Saturday to 7 AM Monday — A few pieces of energy/stronger lift will pass through the Northland over the weekend which will result in some spotty precipitation across northeast Minnesota and northwest Wisconsin.
18z NAM 3km model 10-12-2018
Simulated Radar (Precipitation type forecast) valid from 1 AM Saturday to 7 PM Sunday.
…Climate Data for October 11, 2018…
Coldest high temperature on record for October 11 with a high on Thursday of 33 degrees. The previous record coldest high temperature for October 11 was 35 degrees set in 1959.
Coldest high temperature on record for October 11 with a high on Thursday of 34 degrees. The previous record coldest high temperature for October 11 was 35 degrees set in 2009.
Tied for coldest high temperature on record for October 11 with a high on Thursday of 40 degrees, this ties for coldest high temperature on record for October 11, this record was first set in 1906 and tied in 1977 and again in 2018.
International Falls, Minnesota
Tied for 2nd coldest high temperature on record for October 11 with a high on Thursday of 34 degrees. The coldest high temperature on record for October 11 is 32 degrees set in 2006.
Tied for 4th coldest high temperature on record for October 11 with a high on Thursday of 39 degrees. The coldest high temperature on record for October 11 is 35 degrees set in 1909.
Most of our area saw increasing amounts of sunshine this afternoon as we got rid of the clouds that were over the area this morning. Even with the sunshine, highs were still well below average with temperatures this afternoon in the 30s while upper 20s were found in far northeast Minnesota while a few southern locations made it into the low 40s, including Brainerd, Aitkin, McGregor, Moose Lake, Hinckley and the Duluth Harbor.
Surface map late this afternoon had an area of high pressure over eastern Missouri with low pressure over southern Saskatchewan province — A band of warm air advection is occurring ahead of this low today over the northern Plains with 850mb temperatures of +2 to +6C while here in the Northland 850mb temps ranged from -6 to -8C!
Clear to partly cloudy skies during the evening for most areas will become partly to mostly cloudy during the night. Lows will be in the 20s to lower 30s, but some spots in far northern Minnesota could drop into the teens.
Partly sunny to mostly cloudy with a few showers possible as a potent disturbance and area of low pressure approach from the NW while a cold front sweeps SE and through our area. There isn’t a lot of moisture for this system to work with, but the lift will be rather strong, so we could see a few showers pop up as this system moves through. Highs Saturday will range from the mid 30s to mid 40s, mildest temps found over east-central Minnesota, northwest Wisconsin and near Lake Superior where some upper 40s to near 50 degree temperatures are possible Saturday afternoon.
Another shot of cold air moves into the Northland on Sunday as 850mb temps crash to between -6 and -10C. A few snow and rain showers are expected on Sunday due to a surface trough which will move SE into northern Minnesota. Highs on Sunday are expected to be in the 30s to around 40 degrees.
Note: It will be rather breezy at times this weekend with south-southwest winds Saturday at 10-20 mph with gusts to 25 mph, then winds will shift to the west Saturday night and Sunday with gusts to 25 mph.
Duluth, Minnesota Climate Normals for October 13
Sunrise Saturday: 7:24 AM CDT
Sunset Saturday: 6:25 PM CDT