Category Archives: Severe Weather

Are hurricanes in January typical occurrences?

No. The annual hurricane season typically runs from June 1 to Nov. 30. Approximately 97 percent of hurricanes occur during that time. January hurricanes are rare.

Alex was declared a hurricane in the Atlantic on Thursday and maintained hurricane winds until Friday. It was a Category 1 storm with sustained winds of 85 mph. Continue reading

Category: Meteorology, Phenomena, Severe Weather

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Will this mild November weather continue?

Not necessarily. Some warm Novembers had some severe extratropical cyclones, particularly around Veteran’s Day (formally known as Armistice Day).

Tuesday marks the 40th year since a winter storm blew across the Midwest, sending the freighter SS Edmund Fitzgerald to the bottom of Lake Superior with all 29 crew members. Gordon Lightfoot’s 1976 ballad “The Wreck of the Edmund Fitzgerald” helped make this incident the most famous disaster in Great Lakes shipping history. Continue reading

Category: Meteorology, Severe Weather, Weather Dangers

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What is a 100-year flood?

A flood occurs when water flows into a region faster than it can be stored in a lake or reservoir, absorbed into the soil, or removed by runoff into a drainage basin.

There are several conditions that can result in flooding: a long-lasting rainfall over a watershed, intense thunderstorms, or rainfall that causes rapid snow melt. Continue reading

Category: Climate, Meteorology, Severe Weather

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Is hurricane forecasting improving?

There are two important components of hurricane forecasting: the hurricane track (or where it is going) and hurricane intensity (or how and if its winds are increasing). Track forecasts have improved over the last two decades; intensity forecasts have not improved.

In 1992, when Hurricane Andrew hit Florida, the average three-day forecast error in hurricane track was about 300 miles. Today, a six-day forecast of the typical hurricane track error is now less than 200 miles, more accurate than the three-day forecast was 23 years ago. Continue reading

Category: Meteorology, Severe Weather, Tropical

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What caused the recent weather extremes?

The National Weather Service in Milwaukee confirms that three separate tornadoes occurred in our state on Tuesday.

EF-1 tornadoes, with winds estimated at up to 110 mph, struck Lake Geneva and a location just outside of Big Bend. An EF-0 tornado, with winds estimated at up to 80 mph, struck southwest Waukesha. Continue reading

Category: Meteorology, Seasons, Severe Weather

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