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Extension > Mark Seeley's WeatherTalk > June 2015

Friday, June 26, 2015

Preliminary June Climate Summary

Preliminary June Climate Summary:


With just a few days left in the month it looks like most observers will report mean monthly temperatures that are plus or minus with 1F of normal.  Extremes for the month ranged from 99F at Madison (Lac Qui Parle County) and other western Minnesota communities on the 9th to just 25F at Embarrass and Brimson on the 1st.  Dew points generally remained in the comfortable range except for 2-3 days when values approached the 70F mark, raising the Heat Index.

Rainfall was variable around the state during June.  Some areas of north-central and northeastern Minnesota received below normal rainfall, but many other areas of the state saw above normal rainfall.  Some of the wetter than normal reports from observers included:

5.07" at Twin Valley 5.23" at Bemidji 7.65" at Melrose 5.33" at Windom 7.56" at Albert Lea 6,16" at Owatonna 6.85" at Waseca 5.40" at Springfield 6.94" at Austin 5.22" at Zumbrota 6.47" at Theilman

In addition, large hail (1" diameter or greater) occurred on June 2, 7, 9, 19, and 21 in scattered locations around the state, and damaging winds (wind gusts over 50 mph) were reported by some observers on five other dates during the month.

Overall, it was a good month for Minnesota crops, with 89 percent of the state reporting adequate to surplus soil moisture conditions.  Harvest conditions were generally good for the 1st crop of alfalfa and reports from the field showed 80 percent of the state's corn crop in good to excellent condition, and 76 percent of the soybean crop in good to excellent condition.

Weekly Weather Potpourri:


A line of strong thunderstorms brought heavy rains and high winds to parts of eastern Pennsylvania, Connecticut, and New Jersey on Tuesday evening (June 23).  Straight line winds up to 85 mph broke off power poles, uprooted trees and damaged some homes.  Roads and highways were blocked for a time and over 400,000 residents suffered power outages.


Daily high temperatures this week from Karachi, Pakistan (June 17-23) were 99F, 103F, 104F, 112F, 108F, 108F, and 106F.  Some overnight lows never dropped below 91F.  With the absence of air conditioning, and many cases even electricity, the number of deaths topped 1000, as thousands more sought care for heat related medical problems.  Temperatures are supposed to remain very high well into next week.

A recent study by scientists in the United Kingdom finds that even a recurrence of a solar minimum (reduction in energy reaching Earth from the sun) would not cancel the long-term warming trend being measured on the planet.  It could however contribute to relatively colder winters in portions of Europe and North America.  You can read more at the U.K. Met Office web site.
Also this week, Lancelot released a new study on threats to public health presented by climate change.  The authors conclude that the impact of climate change on human health is underestimated and is deserving of more public policy attention.  More technology and financing will be needed to adjust to these threats in the future.


EPA has made available for public distribution on their web site the report Climate Change in the United States: Benefits of Global Action. This report describes climate impacts on most sectors of the USA economy and infrastructure and presents descriptions of climate adaptation that will be required. 

NOAA's climate.gov web site also released an interesting article about how climate affects the quantity and quality of the coffee we drink.  It makes for some interesting reading, especially if you are a coffee lover.  

AGU published an interesting article this week, via EOS Buzz, about predicting Arctic sea ice and how accurate some of the models are.  It makes for some interesting reading.

MPR Listener Question:


I know from reading your book that frosts have occurred in every month of the year in many northern Minnesota communities.  But how about southern cities?  Has anyone in southern Minnesota ever reported a July frost?


Answer:


Only a few instances have occurred.  On July 29, 1900 the observer at Montevideo reported 31°F and some crop damage, and on July 30, 1971 the observer at Pipestone reported a morning low of 32°F with some light frost damage.  There were also reports of light ground frost in southern Minnesota during July of 1967.  So our measurement history shows it is possible to get frost in southern Minnesota locations during July, but it is quite rare.

Twin Cities Almanac for June 26th:


The average MSP high temperature for this date is 81 degrees F (plus or minus 8 degrees F standard deviation), while the average low is 61 degrees F (plus or minus 7 degrees F standard deviation).

MSP Local Records for June 26th:


MSP weather records for this date include: highest daily maximum temperature of 99 degrees F in 1931; lowest daily maximum temperature of 55 degrees F in 1968: lowest daily minimum temperature is 46 degrees F in 1926; highest daily minimum temperature of 78 F in 1931; record precipitation of 2.54 inches 1998; and no snowfall has been recorded on this date.

Average dew point for June 26th is 58 degrees F, with a maximum of 78 degrees F in 2007 and a minimum of 37 degrees F in 1926.

All-Time State Records for June 26th:



The state record high temperature for this date is 106 degrees F at Faribault (Rice County) in 1934 and at Milan (Chippewa County) in 1933. The state record low temperature for this date is 30 degrees F at Fosston (Clay County) in 1929.  State record precipitation for this date is 5.20 inches at Morris (Stevens County) in 1914; and there has not been any snowfall on this date in state history.

Past Weather Features:


Strong thunderstorms brought heavy rains and hail to the state over June 26-27, 1914.  Fifteen communities received over 3 inches of rainfall.  Storms were numerous during June of 1914, with over half the days of the month bringing rain.  Over 20 communities reported 10 inches of rain or more during the month.

June 26, 1929 brought cold temperatures to northern Minnesota, as over 20 communities reported morning lows in the 30s F.  Fosston dipped to just 30F and frost caused widespread crop damage in parts of Polk County.

June 26, 1933 was the warmest in Minnesota history with 17 Minnesota communities reporting a daytime high of 100 degrees F or higher.  The temperature reached 90F as far north as Big Falls.  Fortunately, late afternoon thunderstorms developed on June 26th and carried over into June 27th bringing some rain and cooler air.
http://climate.umn.edu/img/flash_floods/p980624_28.gif


Over June 24-28, 1998 heavy rains brought flooding to some parts of southeastern Minnesota.   Many observers reported 4 or more inches of rain.  Wabasha received over 6 inches of rain, while Zumbrota reported over 9 inches.  Flash flooding was reported in parts of Scott, Rice, Goodhue, and Winona Counties.

Outlook:


Near normal temperatures over the weekend with a chance for scattered showers and thunderstorms in the north later on Saturday, and in the south on Sunday.  Continued near normal temperatures next week, with a chance for showers on Wednesday, then slightly cooler temperatures toward the end of the week.

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