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Category Archives: Seasons
Has 2026 been an active tornado year?
A tornado is a violently rotating column of air that is in contact with both the surface of Earth and the storm above. The 30-year normal (1981-2010) for Wisconsin is 23 tornadoes per year.
As of mid-July, the National Weather Service has confirmed that our state has experienced 39 documented tornadoes, which ties it with 2025 for the 6th most tornadoes in an entire year. These tornadoes were distributed over 10 different days. Twenty-seven of those tornadoes were spawned between April 13 and April 17, with 16 on April 17 alone. Continue reading
What is the wet-bulb temperature?
The wet-bulb temperature is the lowest temperature to which unsaturated air can be cooled by evaporating liquid water into it.
This may sound horribly obscure, but it serves as a very useful measure of human comfort. It combines atmospheric humidity and temperature in a way that helps determine our comfort level while in the shade, especially during hot and humid conditions. Continue reading
Does NOAA conduct fire weather forecasting?
Wildfire outbreaks require the alignment of several factors, including temperature, humidity, winds and the lack of moisture in fuels such as trees, shrubs and grasses. These factors have strong direct or indirect ties to current weather, climate variability and climate change. The National Oceanic and Atmospheric Administration supports weather forecasting throughout a wildfire’s lifecycle: before, during and after the wildfire.
Drought conditions can set the stage for wildfires. Continue reading
Category: Seasons, Severe Weather, Weather Dangers
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Was this spring milder than normal?
With only a few exceptions, it seems as if this year’s run-up to summer, which arrived at 3:24 a.m. Sunday, June 21, was relatively mild. By that we mean very few really oppressively hot and humid days.
Naturally, we wondered if this were actually a true impression and also how this year’s spring stacked up against others that have visited Madison over the years. One way (but not the only way) to make such an assessment is to consider how many days in the interval from April 1 to June 21 have had a daily high temperature greater than or equal to 80 degrees Fahrenheit. Continue reading
Are we ahead of schedule with the spring greening?
We all just lived through a historic April here in Madison, and broadly across the region.
In Madison and Milwaukee, April 2026 was the wettest April since record keeping began in 1869 and 1871, respectively. Madison received 7.26 inches of rain during the month, more than half of that amount coming on just three days (1.34 inches on April 2, 1.53 inches on April 14 and 0.98 inch on April 17). Continue reading
