HydroClim Minnesota for Early July 2013
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 3, 2013 (distributed one day early)
What happened in June 2013:
- June rainfall totals were well above historical averages in most Minnesota counties, except in far northern Minnesota where rainfall was somewhat below average. In some communities, especially in southeastern counties, monthly precipitation totals topped the long-term average by more than four inches. A handful of southeast and south central Minnesota locations set new all-time high records for June rainfall.
[see: June 2013 Precipitation Map | June 2013 Precipitation Departure Map | June 2013 Climate Summary Table]
- Persistently wet weather during June hampered outdoor activities. Field working conditions for agriculture were often poor, perpetuating planting delays. Occurrences of rural and urban flooding were reported throughout the month. Of particular note was an eight inch-plus rainfall reported in northwest Wilkin County on June 25-26. Severe weather on June 20, 21, and 22 led to historically large power outages. Solar radiation data gathered at the University of Minnesota - St. Paul Campus indicate that June 2013 was the cloudiest June in the 50-year period of record.
[see: Severe Storms: June 12 | Severe Storms: June 15-16 | Severe Storms: June 18 | Severe Storms: June 20-21 | Severe Storms: June 21-22 | Flash Flood: June 25-26]
- June average monthly temperatures in Minnesota were quite close to historical averages. This broke a string of four consecutive months of below-average monthly temperatures. Extremes for the month ranged from a high of 93 degrees on the 25th at Marshall (Lyon County), to a low of 26 degrees at Embarrass (St. Louis County) on the 3rd.
[see: June 2013 Climate Summary Table]
Where we stand now:
- Year-to-date and season-to-date precipitation totals top historical averages in most Minnesota counties. A pocket of relative dryness remains entrenched in northwest Minnesota. Elsewhere however, spring and early summer precipitation totals were ample to excessive. April-through-June precipitation totals in some southeast Minnesota counties were in excess of 24 inches, exceeding the historical average by an astounding 12 or more inches. For much of southeast Minnesota, precipitation totals for April-through-June approached, or broke, all-time highs for the three-month period. For Rochester, it was the record wettest first half of the calendar year.
[see: Year-to-date precipitation maps | Season-to-date precipitation maps]
- The U. S. Drought Monitor, released on July 3, places small portions of northwest and north central Minnesota in the Moderate Drought category. Just four percent of Minnesota's landscape is in Moderate Drought, a substantial improvement over early April when 67 percent of Minnesota was experiencing Extreme or Severe drought. 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: Minnesota Drought Condition Summary | Red River Basin Drought Decision Support System]
- The U.S. Geological Survey and the Minnesota DNR report that stream discharge values are well above historical medians at many gauging locations.
[see: USGS Stream Flow Conditions | MNDNR Weekly Stream Flow Maps and Tables | National Weather Service Red River Flood Briefing]
- Water levels on Minnesota lakes have responded upward to spring and early summer precipitation after being very low in late 2012.
[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 3 report, the Minnesota Agricultural Statistics Service reported that topsoil moisture was 0% Very Short, 1% Short, 74% Adequate, and 25% Surplus across Minnesota. Subsoil moisture was said to be 5% Short. Soil moisture measurements made at University of Minnesota Research and Outreach Centers indicated adequate to surplus conditions in southern Minnesota.
- The potential for wildfires is currently rated by DNR Forestry as Moderate in northwest and northeast Minnesota, Low elsewhere across the state.
[see: Fire Danger Rating Map]
- The July precipitation outlook indicates equal chances of below-normal, near-normal, or above-normal conditions throughout Minnesota. July precipitation normals range from just over three inches in far northwestern 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 projects equal chances of below-normal, near-normal, or above-normal conditions across Minnesota. Normal July high temperatures are in the low to mid-80s. Normal July lows are around 60 degrees. July is historically the warmest month of the year in Minnesota.
[see: Climate Prediction Center 30-day Outlook | July Temperature Normal Map]
- The 90-day precipitation outlook for July through September offers equal chances of below-normal, near-normal, or above-normal conditions everywhere in Minnesota. The July through September temperature projection also projects equal chances of below-normal, near-normal, or above-normal conditions.
[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:
Notes from around the state:
Upcoming dates of note:
- July 18: 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://www.drought.unl.edu - National Drought Mitigation Center
- http://www.rrbdin.org/rddss - Red River Basin Drought Decision Support System, International Water Institute
- http://water.usgs.gov - U.S. Geological Survey
- http://mndnr.gov/waters - Minnesota DNR Division of Ecological and Water Resources
- http://weather.gov/grandforks - National Weather Service Forecast Office - Grand Forks
- http://www.minnehahacreek.org - Minnehaha Creek Watershed District
- http://www.dnr.state.mn.us/lakefind - Minnesota DNR LakeFinder
- http://lwcb.ca - Lake of the Woods Control Board
- http://www.lre.usace.army.mil - US Army Corps of Engineers, Detroit District
- http://www.nass.usda.gov - USDA, National Agricultural Statistics Service
- http://swroc.cfans.umn.edu - University of Minnesota, Southwest Research and Outreach Center, Lamberton
- http://sroc.cfans.umn.edu - University of Minnesota, Southern Research and Outreach Center, Waseca
- 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