This past week has seen unprecedented weather activity across Wisconsin, marked by intense heat, high humidity, and severe storms that have brought significant rainfall and caused widespread damage.
“We’ve experienced multiple rounds of storms, producing heavy rainfall, damaging winds, tornadoes, and hail across the state,” said Bridgette Mason, Assistant State Climatologist. “In some areas, rainfall reached up to four to six inches, particularly in West Central and South Central Wisconsin, from Crawford to Sheboygan counties. This is significantly above the 30-year average, especially around Columbia and Dane counties.”
Severe Storms and Tornadoes
Preliminary reports indicate that the state experienced about ten tornadoes last week, predominantly in Southern Wisconsin. “Most of these tornadoes occurred during severe storms, with winds reaching 60 to 70 miles per hour and hail measuring one to one and a half inches in diameter,” noted Mason. “Unfortunately, many farms and farm structures, as well as livestock, have been impacted.”
Heat and Its Implications
Southern and Eastern Wisconsin have experienced temperatures ranging from one to ten degrees above the 30-year average. “Temperatures soared into the 80s and even 90s in some areas, including around Lake Winnebago,” said Mason. “While this heat is notable, our preliminary findings suggest it is within the historical range for Wisconsin heat waves.”
Agricultural Impact
The recent weather has significant implications for agriculture. “Warm temperatures have accelerated the accumulation of growing degree day units, which is crucial for crop growth stages,” explained Mason. “However, the heavy rainfall has led to flooding in some areas, creating challenges for farmers. Wet soil conditions can delay planting and cause compaction issues, potentially requiring replanting.”
Farmers are also facing concerns about fertilizer runoff due to the excessive rainfall. “We advise farmers to utilize tools like the Runoff Risk Advisory Forecast provided by the Wisconsin Department of Agriculture, Trade, and Consumer Protection,” Mason emphasized. “Additionally, monitoring for pests such as cutworm, alfalfa weevil, and potato leafhopper is crucial, as the heat and moisture conditions are conducive to their spread.”
Looking Ahead
As we move into July, weather patterns are expected to remain active. “Over the next week, South Central and Southeastern Wisconsin may see upwards of two inches of rain, with at least a half-inch expected statewide,” said Mason. “We are also anticipating warmer-than-normal conditions with a slight risk of excessive rainfall between July 2nd and 8th.”
For the rest of the summer, the Climate Prediction Center suggests a trend toward warmer-than-normal temperatures, but there is no clear signal for precipitation levels. “Farmers should use these long-term forecasts as guidance, staying updated with local meteorologists and the National Weather Service for the most accurate information,” advised Mason.
