First Measurable Autumn Snowfall:
Wednesday and Thursday, October 28-29 brought the first measurable snowfalls of the autumn season to Minnesota, although most observers reported a mixture of precipitation, both rain and snow, with temperatures hovering in the low to mid 30s F. Many observers reported from 0.1 to 0.4 inches, including Rochester with 0.2 inches which tied the record value there for October 28th. Long Prairie (Todd County), Montgomery (Le Sueur County), and Cass Lake (Cass County) reported 0.5 inches, Grand Rapids 0.7 inches, and Eau Claire, WI reported 0.9 inches. Rothsay (Wilkin County) reported 1 inch of snow (tying the record from 1964), while just north of Brainerd an observer reported 2.2 inches of new snow.
The persistent mixture of sleet, snow, and rain produced some new daily records for precipitation on October 28th. These included record amounts of 1.12" at International Falls; 1.15 inches at Bemidji; 1.16: at Cass Lake; 1.21" at Mora; 1.27" at Kabetogama; 1.28" at Kimball; 1.31" at Grand Portage; 1.32" at Spring Grove; and 1.72" at La Crescent. These rains will certainly help recharge soil moisture as the soil is still unfrozen and much of the rainfall soaks in.
Preliminary Climate Summary for October2015:
Third Annual Climate Adaptation Conference:
For the second year, Climate Adaptation Awards will be presented to recognize achievements in leadership, education, research, policies, or practices that improve resilience and advance climate adaptation in Minnesota. We strongly encourage you to submit a nomination to recognize exemplary work by an individual, organization, institution, or the private sector. The submission process requires only a letter of nomination and two supporting letters. Nominations are due November 6, 2015, to Barbara Liukkonen, firstname.lastname@example.org This conference promises to be an outstanding venue for disseminating results of your work, learning from others, and celebrating the accomplishments of Minnesota's climate adaptation leaders. Please consider nominating a deserving colleague or organization for an award.
23rd Annual Kuehnast Endowment Lecture:
Weekly Weather Potpourri:
MPR Listener Question:
I recently received a package of bulbs to plant including Tulips and Crocus. The instructions say to plant in cool weather, but several weeks before the soil freezes up. What is the usual date for soils to begin freezing in the fall season and do you think it will be later than normal this year?
Average soil freeze-up dates vary widely across the state ranging from mid November in northern counties to late December in some southern counties. This autumn has been dominated by warmer than normal temperatures and soils are still holding a good deal of heat, with average 6-inch depth temperatures ranging from the mid 40ss to low 50ss F. Despite some recent cold temperatures around the state (upper 20s F at some locations earlier this week), the overall weather pattern favors continuation of above normal temperatures across our region through mid-November. So I would speculate that soil freeze up will occur at least 2-3 weeks later than normal for most places. BTW there have been years when soil freeze up has not occurred until January! You can read more details about the climatology of soil freeze-up in a publication on the MN State Climatology Office web site, and you can keep track of current soil temperatures around the state using the network of observations provided by the Minnesota Department of Agriculture.
Twin Cities Almanac for October 30th:The average MSP high temperature for this date is 51 degrees F (plus or minus 13 degrees F standard deviation), while the average low is 35 degrees F (plus or minus 9 degrees F standard deviation).
MSP Local Records for October 30th:
MSP weather records for this date include: highest daily maximum temperature of 83 degrees F in 1950; lowest daily maximum temperature of 29 degrees F in 1873: lowest daily minimum temperature is 10 degrees F in 1925; highest daily minimum temperature of 57 F in 1933; record precipitation of 1.26 inches 1971; and record snowfall of 0.8 inches in 1951.
Average dew point for October 30th is 35 degrees F, with a maximum of 63 degrees F in 1946 and a minimum of 6 degrees F in 1984.
All-Time State Records for October 30th:
The state record high temperature for this date is 90 degrees F at Canby (Yellow Medicine County) in 1950. The state record low temperature for this date is -8 degrees F at Duluth (St Louis County) in 1925. State record precipitation for this date is 3.15 inches at Glenwood (Pope County) in 1979; and record snowfall is 12.0 inches at Sandy Lake (Aitkin County) in 1951.
Past Weather Features:
October 25-30, 1925 brought a Cold Wave to Minnesota. Most observers reported temperatures that were 20-30 degrees F colder than normal. Lows were in the single digits to below zero F and even daytime highs struggled to get into the 30s F. The cold air was ushered into the state on the backside of a winter storm that had brought 2 to 6 inches of snow.
The most severe dust storm of the year occurred on October 30, 1936. In western Minnesota winds gusting to over 40 mph brought thick clouds of soil and dust, reducing visibility down to near zero at times. Residents remarked that this storm left everything covered with a thick coating of dust.
The warmest October 30 in state history occurred in 1950 when nearly every climate observer in the state reached at least 70F or warmer. Almost other southern Minnesota communities saw afternoon highs in the 80s F. It was a last gasp of warm air that autumn as temperatures the next week plummeted into the teens and twenties F.
An early winter storm brought widespread snow to central and northern Minnesota communities over October 30 to November 1, 1951. Pokegama Dam, Walker, Cloquet, Sandy Lake, Leech Lake, and Virginia reported over 10 inches of snow. It was the start of a long and snowy season for many parts of the state.
October 30 to November 1 of 1979 brought a slow moving winter storm to Minnesota that delivered abundant rainfall. Many climate observers reported over 2 inches of rain, in some cases mixed with snow. Some northern and western counties received 3 to 4 inches of rainfall. The rain brought a halt to a late corn harvest season and some corn fields were left unharvested until the spring of 1980.