/Issued 11:16 AM CDT, Sunday, April 1, 2018/
Here’s my preliminary snowfall map for the Monday night-Tuesday storm — Adjustments possible.
Source: https://weathermodels.com
00z European Ensemble model from Sunday morning, April 1, 2018.
Source: https://lab.weathermodels.com
Source: https://hprcc.unl.edu
Temperature departure map for the week of March 25, 2018. Generally below average temperatures last week in northeast Minnesota and northwest Wisconsin.
Source: https://hprcc.unl.edu
Precipitation departure map for the week of March 25, 2018. Highly variable precipitation departures in our area last week. Well above average totals in western-southern parts of the Northland (Blue/Purple areas on map) Near to below average totals near Lake Superior.
April Climate Averages for Duluth, Minnesota
Temperature: 39.6 degrees
Precipitation: 2.43 inches
Snowfall: 6.9 inches
Warmest April on record: 46.1 degrees in 1987
Coldest April on record: 28.7 degrees in 1950
Wettest April on record: 8.18 inches in 2001
Driest April on record: 0.24 inches in 1987
Snowiest April on record: 50.8 inches in 2013
Least snowy April on record: 0.0 inches in 1976
Average high on the 1st: 41 degrees
Average high on the 30th: 57 degrees
Average low on the 1st: 24 degrees
Average low on the 30th: 36 degrees
Average number of days with a high temperature of at least 50F: 14
Average number of days with a high temperature of at least 60F: 6
Average number of days with a high temperature of at least 70F: 2
Average number of days with snowfall (0.1″ or greater accumulation) 5
Astronomical Data for April
Sunrise on the 1st: 6:50 AM CDT
Sunrise on the 30th: 5:54 AM CDT
Sunset on the 1st: 7:38 PM CDT
Sunset on the 30th: 8:17 PM CDT
April 2017 Climate stats for Duluth, Minnesota
Average temperature: 42.2 degrees
Departure: +2.6 degrees above average
Total precipitation: 3.02 inches
Departure: +0.59 inches above average
Total snowfall: 1.9 inches
Departure: -5.0 inches below average
17 days with a high temperature of at least 50F
7 days with a high temperature of at least 60F
1 day with a high temperature of at least 70F
3 days with snowfall of at least 0.1 inch accumulation
Weather Tidbits for Duluth, Minnesota
-Looks like Easter will end up colder than Thanksgiving was. The high temperature on Thanksgiving Day (November 23) was 38 degrees. Forecast high for Easter (April 1) ~30 degrees.
-At least 1 inch snow depth from October 26 through November 26. And again from December 9 through April 1 (and counting)
-White Halloween, white Thanksgiving, white Christmas, white St. Patrick’s Day and will also have a white Easter this year with a snow depth of at least one inch Easter morning.
Snowfall reports from March 31, 2018
Source: https://www.weather.gov/dlh/
Sandstone, MN: 12.0 inches
2 W Hayward, WI: 11.5 inches
Wascott, WI: 11.0 inches
Garrison, MN: 11.0 inches
Aitkin, MN: 10.0 inches
1 S Hinckley, MN: 10.0 inches
Minong, WI: 10.0 inches
2 W Glidden, WI: 9.0 inches
Willow River, MN: 8.8 inches
Saxon, WI: 8.5 inches
Phillips, WI: 8.0 inches
Shell Lake, WI: 8.0 inches
Gile, WI: 7.5 inches
Gordon, WI: 6.0 inches
4 SSE Webster, WI: 6.0 inches
Drummond, WI: 5.8 inches
Moose Lake, MN: 5.6 inches
Hayward, WI: 5.0 inches
Kettle River, MN: 4.0 inches
Wrenshall, MN: 2.8 inches
7 ESE Superior, WI: 2.5 inches
Cloquet, MN: 2.0 inches
1 N Gary New Duluth, MN: 1.6 inches
Duluth Airport: 1.5 inches
Cook, MN: 1.4 inches
Low Temperature reports from April 1, 2018
Source: https://www.weather.gov/dlh/
4 W Clam Lake, WI: -4F
Winter, WI: -2F
Bruno, MN: -1F
Temperature and Precipitation report for Duluth, Minnesota
March 25-31, 2018
High Temperatures/Departure from Average
3/25: 36F/-2 degrees below average
3/26: 34F/-5 degrees below average
3/27: 44F/+5 degrees above average
3/28: 46F/+6 degrees above average
3/29: 33F/-7 degrees below average
3/30: 27F/-13 degrees below average
3/31: 24F/-17 degrees below average
Low Temperatures/Departure from Average
3/25: 23F/+2 degrees above average
3/26: 28F/-5 degrees below average
3/27: 30F/+8 degrees above average
3/28: 25F/+3 degrees above average
3/29: 20F/-3 degrees below average
3/30: 15F/-8 degrees below average
3/31: 12F/-12 degrees below average
Note: Average temperature for the week of March 25: 28.4 degrees (-2.5 degrees below average) Source: https://www.dnr.state.mn.us
Total Precipitation: 0.42 inches
Average: 0.37 inches
Departure: +0.05 inches above average
State Average for Minnesota for the week of March 25, 2018
Source: https://www.dnr.state.mn.us
Average Temperature: 31.2 degrees
Departure: -3.5 degrees below average
Total Precipitation: 0.43 inches
Departure: +0.02 inches above average
Notes:
•2nd coldest high temperature on record for March 31 at International Falls, Minnesota. High temperature on Saturday was 19 degrees. Coldest high temperature on record for March 31 is 17 degrees set in 1975.
•2nd coldest high temperature on record for March 31 at Brainerd, Minnesota. High temperature on Saturday was 23F. Coldest high temperature on record for March 31 is 20 degrees set in 1969.
•4th coldest high temperature on record for March 31 at Ashland, Wisconsin. High temperature on Saturday was 26 degrees. Coldest high temperature on record for March 31 is 22 degrees set in 1923 and 1907.
Weather Synopsis
One thing is certain and that is the cold below average temperatures won’t be leaving anytime soon. The pattern is locked into place with northwest flow aloft which will bring reinforcing shots of very cold temperatures into the upper Midwest this week. Keep in mind that average highs are now in the 40s as we’re now into early April, while average lows are mainly in the 20s. This week we’re looking at high temps in the 20s and 30s with lows anywhere from the single digits below zero to 20s above zero. Certainly possible that will have a top 5 coldest temperature on record on a few days this week for some locations in northeast Minnesota and northwest Wisconsin.
Our next winter storm is set to impact the region Monday evening through Tuesday.
Computer models as is often the case especially the way its been the last few months are not in the greatest agreement with the placement of the heaviest swath of snow which could have amounts of 6 inches or more!
The NAM is really juiced/amped up again and seems to be way too far north bringing the heavy snow well into the Northland with over 8 inches even in Duluth.
GFS, EURO, German-ICON and Canadian models are farther south with much less snow for the Twin Ports area with the heaviest snowfall concentrated from south central and east central Minnesota into portions of central Wisconsin — I’m leaning toward these solutions based on how the past few snow events have gone around here.
Light snow would begin to fall in Duluth Monday night with some light snow lingering into Tuesday. At the moment I’m going with a total accumulation of 1 to 3 inches for Duluth and Superior.
Winds will be out of the east to northeast Monday night-Tuesday morning but temperatures don’t look cold enough for any lake enhanced snowfall.
Tim
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