Mobile and manufactured home tornado safety around St. Louis

Last updated: October 10, 2026

If you live in a mobile or manufactured home, plan to leave it when a tornado warning is issued — the National Weather Service says a mobile home is not safe in a tornado, and its St. Louis office has long advised mobile home residents to plan their escape to a nearby sturdy building. Your options are a sturdy building you can reach in minutes, a community shelter in your park, or a tested safe room on its own pad next to your home. We found no Missouri requirement that parks provide a shelter, so in most places the plan is yours to make.

Where mobile homes are common in our area

Census estimates for 2020–2024 show how much the share of mobile homes varies across the region:

In Jefferson and Franklin counties, roughly one home in eleven is a mobile home.

Why tie-downs aren't a shelter

Anchoring and tie-downs help a manufactured home resist ordinary high winds and are regulated for installation. They aren't designed to make a home a tornado shelter. The NWS's guidance is clear: don't stay in a mobile home during a tornado warning.

Your plan, step by step

1. Pick your sturdy building now. A neighbor's house with a basement, a church, a business that's open when you're home, a relative nearby. Ask them in advance.
2. Time the trip. Day and night. If it's more than a few minutes, you need a closer option.
3. Act on the watch, not just the warning. On a tornado watch day, plan to move early — evenings especially.
4. Get alerts that wake you. A NOAA Weather Radio (the St. Louis-area transmitter is listed as KDO89, 162.550 MHz) and your county alert system. See the household tornado plan.
5. Keep a go-bag by the door. Shoes, flashlight, medications, phone charger, pet carrier.
6. Never shelter under a highway overpass or in a vehicle. The NWS says overpasses are not acceptable shelters.

What to ask your park

• Is there a storm shelter on site? Where, how many people does it hold, and who opens it?
• Is it built to FEMA P-361 or ICC 500 criteria?
• Is there a written severe weather plan? How are residents warned?
• If there's no shelter, which nearby building does the park recommend?
• Would management support applying for a community shelter?

Community shelters for parks

A shelter that serves a whole park is the most efficient answer for most residents. In Missouri, it's also the kind of safe room SEMA currently administers federal mitigation money for, along with school safe rooms: the Hazard Mitigation Grant Program pays up to 75% of eligible costs, but applications must come through an eligible local government or similar entity, not the park owner directly, per SEMA. A park owner who wants a shelter should talk to the county emergency management office about sponsoring an application. See community storm shelters.

A safe room on your own pad

If you own your lot, or your park allows it, a steel above-ground safe room on its own concrete pad next to your home gives you a shelter steps away.

• Pad: sized and poured to the manufacturer's specification. One national manufacturer's St. Louis page, for example, requires at least 4 inches of 3,000-psi concrete for its above-ground units.
• Size: at FEMA's 3 square feet per person for a home tornado safe room, a 4 × 6 unit holds eight.
• Cost: that manufacturer's St. Louis list starts at $3,995 for a small unit before the pad, delivery and installation; national guides put installed above-ground shelters at $3,000–$12,000+.
• Permission: in a park, get written permission from management first.
• Permit: Unincorporated St. Charles County requires a permit for every storm shelter; check your county.

An underground unit is an option on a high, dry rural lot; see above-ground vs underground.

Related guides

• St. Louis storm shelter options
• Household tornado plan
• Missouri storm shelter grants, rebates and financing
• Shelter capacity and access

Frequently asked questions

Is it safe to stay in a mobile home during a tornado warning? No. The National Weather Service says mobile homes aren't safe in tornadoes. Go to a sturdy building or a shelter.

Do Missouri mobile home parks have to provide a storm shelter? We found no Missouri requirement. Ask your park what it provides.

Can I get a grant for a shelter next to my mobile home? Missouri offers individuals no safe room grant or rebate. Community shelters can be funded through local government applications.

What about Illinois parks? We haven't confirmed Illinois's rules on park shelters; ask your park and county.

Get a quote

Park owner, or homeowner on your own lot? Tell us about the site. See community storm shelters, or get a quote.