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Extension > Mark Seeley's WeatherTalk > Near record warm first half of June

Friday, June 16, 2017

Near record warm first half of June

Near record warm first half of June:


In contrast to May, the first half of June has been unusually warm, near record-setting in many places across Minnesota. For the Twin Cities Metro Area the mean temperature for the first half of June has been about 74.9 degrees F. Only 1976 was warmer, with a mean temperature of 75.1 degrees F. On a statewide basis the mean temperature for the first half of June was 69 degrees F. Only 1933 (71.4°F) and 1988 (70.4°F) were warmer.

Within the Minnesota climate observation network 45 stations have reported daily maximum temperature records tied or broken so far this month, and 46 stations have also reported daily warm minimum temperature records tied or broken so far. Many places have reported multiple days with 90°F temperatures, as high as 97 degrees F at Rosemount and Waseca. MSP set a new record warm minimum temperature on June 10th with a reading of 77°F, breaking the old record of 73 degrees F back in 1973. Milan also reported a record warm minimum on that date with a reading of 77°F. MSP also tied a record high dew point reading on June 13 with a reading of 74 degrees F.

In addition recent severe weather has brought hail, strong wind, and even tornadoes to parts of Minnesota. Over June 11-14 within the climate observation network 13 new daily rainfall records were reported, including 3.00 inches at New York Mills (Otter Tail County), 2.55 inches at Mora (Kanabec County), and 2.45 inches at Browns Valley (Traverse County) on the 14th. On both the 11th and the 13th there were widespread reports of large hail and damaging winds across Minnesota. Some hail cause crop damage, especially in Kandiyohi, Swift, Chippewa, and McLeod Counties. Corn and soybean fields are still being assessed. In the Twin Cities area and western Wisconsin home owners were examining structural damages from hail as well.

Also on June 13th tornadoes were reported in Stevens and Big Stone Counties of west-central Minnesota. The tornado near Hancock was filmed and can be seen on YouTube. Damage from these storms was still being assessed as well.

A more complete analysis of the severe weather this week can be found at the Minnesota State Climatology Office web site, including write-ups and images for the storms of June 11, June 12, and June 13.

New Seasonal Climate Outlook:


The NOAA Climate Prediction Center released new seasonal climate outlooks this week. For the period from July through September the outlooks favor warmer than normal temperatures across Minnesota. In addition the outlooks favor wetter than normal conditions across much of the state. You can find more information at the NOAA-CPC.

Weekly Weather Potpourri:


Earlier this week NOAA scientists commented on a study of the decline in Alaska permafrost and its impact on carbon dioxide in the atmosphere. One state that caught my eye: "the amount of carbon dioxide being released from tundra in the northern region of Alaska during early winter has increased by 70 percent since 1975..." A 41-year record of carbon dioxide measurements from NOAA's Barrow Observatory was used in this study.


Many areas of Spain were reporting a Heat Wave this week with daytime high temperatures ranging from 100°F to 110°F in some areas. With slow moving high pressure dominating their weather, the Heat Wave was expected to persist for a number of days. Portions of the United Kingdom and France are supposed to see very warm temperatures prevail as well, though not as stressful as those expected for Spain.


Earlier this week, researchers from the University of Manitoba cancelled the first leg of a research expedition on the icebreaker CCGS Amundsen because of too much hazardous Arctic sea ice which had migrated down from higher latitudes. They argued effectively that climate change is not only reducing the total area of sea ice in the Canadian Arctic, but it is also driving ice to further positions south where it produces for navigation hazards.

MPR listener question:

I heard you remark that this has been one of the sunniest months of June in history. How do you quantify that?

Answer:

From the daily measurement of solar radiation on the University of Minnesota St Paul Campus which goes back to 1963, it has clearly been the sunniest since 1976. In addition using National Weather Service reports of sky conditions (cloud cover) from around the state, many stations have already reported 10-12 days of sunny or mostly sunny conditions (2 tenths cloud cover or less), well ahead of the climatological average of 7-8 days for the first half of June.

Twin Cities Almanac for June 16th:


The average MSP high temperature for this date is 79 degrees F (plus or minus 8 degrees F standard deviation), while the average low is 59 degrees F (plus or minus 7 degrees F standard deviation).

MSP Local Records for June 16th:

MSP records for this date include: highest daily maximum temperature of 97 degrees F in 1933; lowest daily maximum temperature of 60 degrees F in 1972; lowest daily minimum temperature of 43 degrees F in 1961; highest daily minimum temperature of 72 F in 1933; record precipitation of 2.16 inches in 1935. No snowfall has occurred on this date.

Average dew point for June 16th 21st is 54°F; the maximum dew point on this date is 73°F in 1952; and the minimum dew point on this date is 32°F in 1980.

All-time state records for June 16th:

The all-time state high temperature for today's date is 106 degrees F at Beardsley (Big Stone County) in 1933; the all-time state low for today's date is 23 degrees F at Embarrass (St Louis County) in 1999. The all-time state record precipitation for this date is 4.98 inches at Willmar (Kandiyohi County) in 1967. No snow has fallen on this date.

Past Weather:


June 16, 1933 was the hottest in Minnesota history, with most communities reporting an afternoon high temperature of 90 degrees F or greater. Fifteen Minnesota communities reached the century mark or greater on the thermometer. June of 1933 was also the hottest in Minnesota history.

June 15-17, 1977 brought repeated thunderstorms across southern Minnesota counties which dropped a total of 3 to 5 inches of rain. This rain was much needed following the drought year of 1976.

25-years ago, on June 16, 1992 at 5:18 pm the last EF-5 tornado (winds greater than 260 mph) reported in Minnesota occurred. It past through Chandler and Lake Wilson (Murray County) killing one person and injuring another 35. The tornado was on the ground for 35 miles and at times was three-quarters of a mile wide. It destroyed or damaged over 150 homes and caused over $50 million in property damage. Thankfully Minnesota has recorded very few EF-5 scale tornadoes in history.

Heavy thunderstorms brought rain and hail to portions of southwestern Minnesota over June 15-16, 1993. Flash floods were reported in Redwood and Lyon Counties, and some roads and highways were closed for a time.

June 16, 1999 brought freezing temperatures to parts of northern Minnesota. Nine climate stations reported morning frosts in Koochiching, Beltrami, and St Louis Counties. In Big Falls, Tower, and Embarrass morning temperatures dropped into the 20s F.

Outlook:


Mostly cloudy on Saturday with chances for showers and thunderstorms. Temperatures will be near normal. Continued chance for scattered showers and thunderstorms on Sunday and Monday with cooler than normal temperatures. Generally dry Tuesday and Wednesday, then a chance for showers again by Thursday.

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