A monthly electronic newsletter summarizing Minnesota's climate conditions and the resulting impact on water resources. Distributed on the first Thursday of the month.
State Climatology Office - DNR Division of Ecological and Water Resources, St. Paul
distributed: July 1, 2015 (distribution advanced one day)
What happened in June 2015:
- June monthly precipitation totals were variable across Minnesota, but overall were close to historical averages. Even in those areas receiving below-average June rainfall, the rains were well-timed and beneficial.
[see: June 2015 Precipitation Map | June 2015 Precipitation Departure Map | June 2015 Climate Summary Table | June 2015 Percent of Normal Precipitation Map]
- Average monthly temperatures for June were very close to historical averages across Minnesota. Extremes for June ranged from a high of 99 degrees F at Madison (Lac qui Parle County) on the 9th, to a low of 25 degrees F at Embarrass (St. Louis County) and Brimson (St. Louis County) on the 1st.
[see: June 2015 Climate Summary Table | June 2015 Departure from Normal Temperature Map]
Where we stand now:
- Seasonal precipitation totals (April through June) rank at or above the historical median across nearly all of Minnesota.
[see: Seasonal Precipitation Maps]
- The U. S. Drought Monitor indicates that Minnesota is free of any drought designation. Small areas of the state are placed in the Abnormally Dry category. In the present scenario, Abnormally Dry is defined as "coming out of drought". Any lingering low water levels are the result of a dry 2014 autumn, below average snowfall during the 2014-2015 winter, and a dry early spring. The U.S. Drought Monitor index is a blend of science and subjectivity where drought categories (Moderate, Severe, etc.) are based on several indicators.
[see: Drought Conditions Overview]
- The U.S. Geological Survey reports that stream discharge values along nearly all of Minnesota's major rivers are near or above the historical median for the date.
[see: USGS Stream Flow Conditions]
- Water levels on most Minnesota ponds, wetlands, and lakes responded upward to spring and early-summer rainfall.
[see: Mille Lacs Lake Water Level | Lake Minnetonka Water Level | White Bear Lake Water Level | Lake of the Woods Control Board Basin Data | Corps of Engineers Great Lakes Water Levels]
- In their June 29 report, the Minnesota Agricultural Statistics Service reported that topsoil moisture was 1 percent Short, 87 percent Adequate, and 12 percent Surplus.
[see: Agricultural Statistics Service Crop Progress and Condition]
- The potential for wildfires is currently rated by DNR Forestry as Low across most of Minnesota. The wildfire danger rating in far northwest Minnesota is considered Moderate.
[see: Fire Danger Rating Map]
- The July precipitation outlook offers equal chances of below-normal, near-normal, or above-normal conditions in most Minnesota counties. The July outlook leans towards above-normal rainfall in far southwest Minnesota. July precipitation normals range from just over three inches in far northwest Minnesota to over four inches in eastern sections of the state.
[see: Climate Prediction Center 30-day Outlook | July Precipitation Normal Map]
- The July temperature outlook favors below-normal conditions across Minnesota. Historically, July is Minnesota's warmest month. Normal July high temperatures are in the low to mid-80s. Normal July lows are around 60 degrees.
[see: Climate Prediction Center 30-day Outlook | July Temperature Normal Map]
- The 90-day precipitation outlook for July through September tilts towards above-normal conditions in the southern one-half of Minnesota. For northern Minnesota, the 90-day precipitation outlook indicates equal chances of below-normal, near-normal, or above-normal conditions. The July through September temperature projection offers equal chances of below-normal, near-normal, or above-normal conditions statewide.
[see: Climate Prediction Center 90-day Outlook]
- The National Weather Service produces long-range probabilistic river stage and discharge outlooks for the Red River, Minnesota River, and Mississippi River basins. These products address both high flow and low flow probabilities.
[see: National Weather Service - North Central River Forecast Center]
From the author:
Upcoming dates of note:
- July 16: National Weather Service releases 30/90 day temperature and precipitation outlooks
Web sites featured in this edition:
- http://water.weather.gov/precip/ - National Weather Service, Advanced Hydrologic Prediction Service
- http://climate.umn.edu - Minnesota Climatology Working Group, Minnesota DNR Eco/Water Resources and U of M Dept. of Soil, Water, and Climate
- http://mrcc.isws.illinois.edu - Midwestern Regional Climate Center
- http://www.drought.unl.edu - National Drought Mitigation Center
- http://waterwatch.usgs.gov - U.S. Geological Survey
- http://www.minnehahacreek.org - Minnehaha Creek Watershed District
- http://mndnr.gov/waters - Minnesota Department of Natural Resources, Division of Ecological and Water Resources
- http://www.lwcb.ca - Lake of the Woods Control Board
- http://www.lre.usace.army.mil/ - U.S. Army Corps of Engineers, Detroit District
- http://www.nass.usda.gov - USDA, National Agricultural Statistics Service
- http://mndnr.gov/forestry - Minnesota Department of Natural Resources, Division of Forestry
- http://www.cpc.ncep.noaa.gov - National Weather Service, Climate Prediction Center
- http://www.crh.noaa.gov/ncrfc - National Weather Service, North Central River Forecast Center
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Greg Spoden, DNR Climatologist