Waukesha County hail and storm history, searchable by town.

Before a canvass, filter to the town you’re working. Pull the two or three most recent qualifying events, note the dates and sizes, and put them in the letter. “1 inch hail was recorded in Delafield on May 31, 2023” does more work than a paragraph of adjectives. Specific and checkable beats loud.

Pair it with the market numbers. The market page shows which towns have the oldest housing stock and the highest home values, so you can pick the block where a 2022 hail date meets a roof from 1985.

Then let the letter draft itself. The door letter lesson in the prompt library takes the event data you just pulled and writes the letter in about a minute. You spend your time on the doors, not the wording.

Everything in the checker comes from the NOAA NCEI Storm Events database, the federal record of severe weather. We filtered it to Waukesha County, kept the two event types that put roofers on ladders (hail and thunderstorm wind), and included every event from 2015 through the latest available data. That’s 203events, each one a public record anyone can verify, including the adjuster reading your customer’s claim.

Two quirks worth knowing. First, NCEI publishes months behind, so a storm from last month can take a while to show up. The 2026 file currently holds zero Waukesha County events, which says nothing about 2026’s weather and everything about publication lag. The most recent event on the books is a 50-knot gust in Delafield on September 22, 2025.

Second, read the wind rows carefully. “Measured” means an instrument caught the gust; “est.” means a trained spotter estimated it. And the property damage column is NOAA’s estimate at report time. It often reads zero even when crews worked the neighborhood for a month, so treat it as a floor, not a tally.

One inch, about quarter size, is the rough threshold where adjusters start expecting damage on asphalt shingles and where claims start moving. It isn’t a law of physics. A 15-year-old 3-tab can crack under smaller stones, and a new architectural shingle over solid decking can shrug off bigger ones. But 1 inch is where the conversation stops being a hard sell, and Waukesha County has logged 74 reports at or above it from 2015 through the latest available data.

The money behind that conversation is real. About 1 in 36 insured US homes files a wind or hail claim each year, the average claim paid ran about $14,747 over 2019-2023, and State Farm alone paid over $5.6 billionin hail claims in 2025, with Wisconsin a top-5 state. When you cite a 1 inch+ event on a street of 25-year-old roofs, you aren’t manufacturing urgency. You’re reading the county’s own weather record out loud.