Storm, Flood and Sinkhole Country: A Missouri Homeowner’s Insurance Playbook

By the Tina Gregory Agency team· Reviewed by Tina Gregory, owner and licensed Missouri insurance agent· Updated October 19, 2026· 18 min read· Sullivan, MO

Maybe a spring hailstorm just rolled through and you’re wondering whether to call about the roof. Maybe your renewal came with a new wind and hail deductible you don’t remember choosing. Or maybe you watched the Meramec come up last time and realized you have no idea whether your policy would pay for water in the house.

Around Sullivan, a home can face hail, straight-line wind, a tornado warning, a river or creek out of its banks and karst ground that opens into sinkholes, sometimes in the same year. A standard home policy treats each of those differently. Some are covered with a deductible, some need their own policy and some are excluded unless you add them. This playbook is for any Missouri homeowner in storm, flood and sinkhole country. It walks through each peril, what it costs you at claim time and what we’d ask about before the next storm.

How does a standard Missouri home policy treat each storm and ground risk?

The short answer: Hail, wind and tornado damage are usually covered subject to your deductible, while flood, earthquake and sinkhole damage usually aren’t and each needs separate coverage.

A standard homeowners policy covers sudden, accidental damage from a list of causes, and it excludes others by name. Weather from above, like hail and wind, is generally in. Water from outside and ground that moves underneath the house are generally out. Here’s the quick map, peril by peril. Your own policy and its endorsements decide what’s actually covered, so treat this as the questions to ask, not the answer for your house.

Two things on that list cause most of the surprises we see: a percentage deductible nobody turned into dollars, and the assumption that “water damage” includes a flood. We’ll take each peril in turn.

Are hail and wind damage covered, and what will you actually pay?

The short answer: Usually yes, but your share depends on your deductible and how the policy pays for your roof, and a percentage deductible can run to several thousand dollars.

Hail and windstorm are covered causes of loss on a typical Missouri homeowners policy. DCI’s roof guide puts it simply: wear and tear on a roof isn’t covered, but “a windstorm that rips up a section of your roof is.” The questions that decide your out-of-pocket cost come after that.

Percentage deductibles. DCI’s deductible guide notes that “some insurance companies sell homeowners insurance policies with percentage deductibles for wind and hail damage,” paired with a flat dollar deductible for theft and other losses. The percentage is based on the home’s insured value. DCI’s example: a house insured for $100,000 with a 2% deductible has $2,000 subtracted from any claim the insurer pays.

How the roof is paid. DCI explains the three common ways. Actual cash value pays the depreciated cost, so an older roof pays less. Replacement cost pays to repair or replace without deducting depreciation. Functional replacement cost pays to replace with a functional equivalent. Some policies also have roof payment schedules or terms for cosmetic damage, and DCI’s March 2021 severe-weather release advises homeowners to “review your roof coverage” because “insurance policies and levels of coverage vary greatly.”

Here’s what shapes your share of a storm claim:

One more storm note: hail on your car isn’t a home claim. It falls under the comprehensive coverage on your auto policy, which our Missouri car insurance guide explains.

What does a tornado claim look like on a Missouri home policy?

The short answer: Tornado damage is wind damage, so it’s usually covered under your wind/hail deductible, and your dwelling, other-structures and loss-of-use limits decide how far the claim goes.

Tornadoes are part of life in Missouri. The National Weather Service office in St. Louis counted an average of 34 tornadoes a year in Missouri from 1950 through 2019, in its Missouri Severe Weather Statistics. Most never touch a house. The ones that do can damage a whole neighborhood at once.

That’s what made 2025 hard. DCI reported on July 31, 2025 that insurers had received more than 173,000 claims on home, renters, condo and auto policies from that year’s catastrophic weather events, and had paid almost $1.6 billion as of July 16, with total payments projected to reach about $1.8 billion. The May 16 tornado in St. Louis alone produced nearly 9,000 claims.

When a tornado or straight-line wind does real damage, three coverages carry the claim:

• Dwelling. If the house has to be rebuilt, your dwelling limit is the ceiling. After a widespread storm, labor and materials can cost more than usual, which is why we set dwelling limits at rebuild cost, not market value.
• Other structures. Detached garages, fences, sheds and barns usually have their own limit, often a percentage of the dwelling limit.
• Loss of use. If you can’t live in the house, this pays extra living costs like rent or a hotel, up to its limit. After a big storm, when roofers are booked and rentals fill up, it can matter more than people expect.

Reviewed by Tina Gregory. Tina owns Tina Gregory Agency, a Farmers Insurance® agency at 878 Dunsford Dr in Sullivan. Her rule for every quote: explain the coverages, then let you pick what works for you. Not sure what your wind and hail deductible is in dollars? Bring your declarations page and we’ll work it out with you.

Why doesn’t home insurance cover flooding, and how do you buy flood coverage?

The short answer: Standard home and renters policies exclude flood, so you need a separate flood policy, usually through the NFIP, and a new one generally takes 30 days to start.

DCI said it plainly in that March 2021 release: “A standard homeowners policy does not cover flood damage.” Rising water from the Meramec, the Bourbeuse, a creek or runoff that covers the yard is a flood, and it needs a flood policy. Most are written through FEMA’s National Flood Insurance Program. The NFIP’s limits are $250,000 for the building and $100,000 for contents, according to FloodSmart, and private flood coverage may also be available.

This isn’t a theoretical risk here. In December 2015, the National Weather Service in St. Louis recorded record crests from Union to Arnold, “in most cases” at least a foot above the old record:

Less than a year and a half later, it happened again. On the night of April 30, 2017, NWS St. Louis forecast record flooding on the Meramec near Sullivan. The U.S. Geological Survey reported record or near-record crests in the Bourbeuse and Meramec basins that week, and the NWS summary of that spring event notes that at least four river gauges set new record crests.

Sullivan and the NFIP. NFIP coverage is available where a community participates in the program, and FEMA’s Community Status Book lists the City of Sullivan (Crawford and Franklin counties) as a participating community, in the program’s regular phase since 1981. Whether your address is in a mapped high-risk zone is a separate question you can check on FEMA’s Flood Map Service Center. Lenders generally require flood insurance in high-risk zones, but water doesn’t always stop at a zone line.

Are sinkholes covered by home insurance in Missouri?

The short answer: Usually not, because standard policies typically exclude earth movement, but you may be able to add sinkhole coverage by endorsement or buy the Missouri FAIR Plan’s standalone sinkhole policy.

Much of Missouri sits on limestone and dolomite. DNR explains that water slowly dissolves that bedrock and carries it away, leaving voids underground. Soil washes into them until the surface collapses. Sinkholes are part of what geologists call karst, along with caves, springs and losing streams, and the Ozark hills around Sullivan are karst country.

A typical home policy excludes earth movement, which takes in sinkholes, settling and earthquakes. DCI put it this way in a February 2016 release: “Most homeowners policies exclude sinkhole coverage,” and few insurers offer it even as an optional add-on. That leaves two places to look:

• An endorsement on your home policy, where your insurer offers sinkhole collapse coverage. Read what it counts as a sinkhole loss and what it leaves out.
• The Missouri FAIR Plan’s sinkhole policy. DCI announced in March 2015 that the FAIR Plan had begun issuing a standalone Sinkhole Loss policy, designed to sit alongside your primary home policy. It covers the home and belongings against sudden ground collapse, not settling foundations or earthquakes. Check current availability and terms before you count on it.

Do you need earthquake insurance in Sullivan?

The short answer: It’s a judgment call: earthquake coverage is bought separately with deductibles of 10% to 20% common, so weigh the risk against what that deductible would mean for you.

DCI’s earthquake page is direct: “Your homeowners policy does not cover damage from an earthquake.” Earthquake coverage “must be purchased as separate coverage,” either as an endorsement or a stand-alone policy. Deductibles are a percentage of the rebuilding cost, often 10% to 20%, with a separate deductible for belongings.

Missouri’s quake risk centers on the New Madrid Seismic Zone in the state’s southeast corner. A 2002 U.S. Geological Survey fact sheet (FS-131-02) puts the chance of a magnitude 6.0 or larger earthquake there at 25% to 40% within 50 years, and the chance of a repeat of the 1811–1812 earthquakes at 7% to 10%. The State Emergency Management Agency’s New Madrid page still uses the same 25% to 40% estimate. Sullivan isn’t in the zone itself, which is part of why the decision is personal rather than automatic.

Questions worth asking: How would you pay to rebuild if the house were badly damaged? Is there a mortgage on it? What would the deductible be in dollars, and what does the coverage cost each year? Some people decide it’s worth it for peace of mind; others put the money elsewhere. Either way, it should be your call, made on purpose.

What if your insurer won’t renew your home after a storm?

The short answer: Document your repairs and shop the regular market first, and if no company will write the home, the Missouri FAIR Plan offers basic property coverage as a last resort.

A nonrenewal notice after a storm season is stressful, and you’re not alone in getting one. After the 2025 storms, DCI’s Insurance Bulletin 25-10 (October 13, 2025) told insurers to stop cancelling or nonrenewing storm-damaged homes based on claims or property condition. DCI rescinded that moratorium effective June 1, 2026 with Bulletin 26-09 (May 29, 2026), which asks insurers to keep giving homeowners more time when they’re making good-faith repairs. That’s a request, not a ban, so a nonrenewal can still happen.

If you get a notice, here’s the order we’d work in:

• Read the reason. Is it the roof, a claim, an unrepaired condition or the insurer pulling back? The fix depends on the reason.
• Finish and document repairs. Keep invoices and photos of a new roof or completed work. That’s what the next underwriter will ask for.
• Shop the regular market. We start with Farmers®, and when Farmers isn’t the best fit we may be able to quote Farmers family company Foremost® or, through Kraft Lake Insurance Agency, other companies. Availability depends on the home.
• Use the FAIR Plan as the backstop. The Missouri FAIR Plan (the Missouri Property Insurance Placement Facility) describes itself as “a last resort to obtain basic property insurance” for people who can’t get coverage in the normal market. Applications go through a Missouri-licensed agent. Its toll-free line in Missouri is 800-392-7240.

What should you do before the next storm season?

The short answer: Turn your deductibles into dollars, close the flood and backup gaps early, document what you own and save the numbers you’d call, which takes about an afternoon.

1. Find your wind and hail deductible in dollars

   If it’s a percentage, multiply it by your dwelling limit. If that number would be hard to pay next week, talk to us about your options.

2. Check how your roof is paid

   Replacement cost, actual cash value or a schedule by roof age. Know which one before a hailstorm, not after.

3. Confirm your dwelling limit is rebuild cost

   Not what the house would sell for. Rebuilding after a widespread storm can cost more than you’d expect.

4. Price flood coverage now

   A new NFIP policy generally waits 30 days. Check your flood zone, then decide with the river low.

5. Add water backup if you have a basement

   Sewer and sump backup usually needs an endorsement. It’s the add-on we bring up first on homes with a finished basement.

6. Ask about sinkhole and earthquake coverage

   Both are excluded unless you add them. Get the deductible in dollars and the yearly cost, then decide.

7. Update your home inventory

   DCI recommends photos, receipts and descriptions kept somewhere safe. A quick video walk-through of every room is a good start.

8. Save the numbers you’ll need

   Your insurer’s claim line, our office at (573) 358-4513 and DCI’s hotline at 800-726-7390. Our service center lists claim and payment contacts.

After a storm, DCI’s April 2026 guidance is to contact your insurer promptly, photograph the damage before any temporary repairs and save receipts for emergency fixes.

The bottom line on storm, flood and sinkhole coverage in Missouri

A standard Missouri home policy usually covers hail, wind and tornadoes, with a deductible you should know in dollars. It doesn’t cover flood, sinkholes or earthquakes unless you add them. Around Sullivan, with the Meramec and the Bourbeuse close by and karst underfoot, those gaps are worth a real conversation, not an assumption.

Call us at (573) 358-4513 or stop by 878 Dunsford Dr in Sullivan. Bring your declarations page and we’ll walk through your deductibles, roof coverage, flood options and earth-movement gaps with you, then quote the coverage you actually want. You can read more in our Missouri homeowners insurance guide and our guide to home insurance in Sullivan, start on our home insurance page or go straight to a free quote.

Last reviewed by Tina Gregory on October 19, 2026.