National Weather Service United States Department of Commerce

Severe Thunderstorm and Tropical Storm Bertha Impacts

Numerous severe thunderstorms are expected across a broad region from the Ohio Valley to the Mid-Atlantic and Northeast States today into tonight. Swaths of damaging wind gusts are expected and some tornadoes are possible. Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the Florida Panhandle westward to southeastern Louisiana later today and Wednesday. Read More >

Here is a look at the past climatology trends from the past 30 years. This is not a forecast.

The first graphic shows the frequency by day of severe weather in Southwest Michigan from 1985 to 2021. The black line is the trend line. Typically the highest occurrence of severe weather is from June to September with peaks and lulls. 

                   

 

 

        Second, is a graph showing the trends of severe storms from 1985 to 2021. 

                  

 

 

Lastly is a chart showing severe storm events from last year compared to normal. A severe storm event is large, damaging hail or damaging winds.