How Likely Is a Tornado in Portage County, WI?
Portage County's tornado history, by the numbers
Portage County has recorded 25 tornado touches in NOAA's 76-year database, a rate of roughly one every 3 years - our Elevated band. Put another way: Portage County sees more tornado activity than 61% of US counties. Wisconsin has 72 counties in this dataset; Portage County ranks 30 of them by frequency.
Beyond the frequency band: violent history
1 tornado touching Portage County reached violent (EF4-5) strength since 1950. That single fact carries more weight for the shelter decision than the county's overall frequency band.
The dollar figure Portage County's rating leads to
Cost nationally: $2,890-$13,280, about $7,645 typical. Wisconsin has no state rebate program confirmed here; FEMA's underlying 75% cost-share exists nationwide, but applying through a state program is what usually makes it real, and none was found for Wisconsin this pass.
What a direct hit isn't required for
The storm that misses Portage County outright can still take its power out - outbreak-scale outages across Wisconsin are common well beyond the tracked path. A battery-backup unit handles that without a generator's setup or fuel.
What this number is, and is not
One caveat before relying on Portage County's number: it is county-wide, and it covers about 801 square miles, so a single touch counts the same as one in a county a fraction of that size. Weaker pre-1990s tornadoes are also documented as undercounted in NOAA's own record. Portage County has about 72,040 residents.