Hazards in Grassie: wildfire low, radon over the guideline in 12% of tested homes
No wildfire is mapped within 25 km of Grassie’s homes since 1986 (0% of the land, 0.001% a year). Earthquakes matter little: NRCan’s model puts building losses at $0.006 a year per $1,000 of value, against $0.030 for the typical town. Hazard risk gives Grassie a grade of B+; its wildfire band pulls it down.
What stands out about Grassie’s hazards
Four national sources, each read for Grassie: earthquakes, radon, past fires and flood studies.
What Grassie faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Grassie grades B+ for hazard risk
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Grassie with little fire nearby would get no credit for it.
Its place: #10 of 185 in Manitoba and #940 of 2,589 Canadian towns.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. Only 66 homes were tested in the survey area, so the radon share is rough. Small fires and grass fires are largely missing from the national burned-area record.
Few fires near Grassie: 0% within 5 km, 0% within 25 km
Fires mapped since 1986 around where Grassie’s residents live, and the fuel next to their homes.
The yearly burn rate around Grassie is 0.001%, low beside 0.000% for the typical Canadian town.
Grassie’s homes have had no fire within 5 km since 1986; the closest was 14 km away.
Land that isn’t forest covers nearly all the ground around Grassie: forest fuel is 0% within 5 km and 0.1% within 25 km.
Shares of land within 5 and 25 km of populated blocks: burned at least once in 1986–2025 (CWFIS burned-area composite), forest fuel and grass (fire behaviour fuel types, 2026, 250 m grid).
Burn rate a year, towns in Manitoba · highest of 189
At 0.001% a year, Grassie is near the top in Manitoba: 31st of 189, behind Flin Flon (Part) (1.68%).
Each bar: the yearly average share of land within 25 km of a town’s homes that burned, 1986–2025 (CWFIS); the seven highest towns of 2,500 people or more.
Low, like 92% of the country’s 2,610 towns: the land around Grassie burns, but slower than in the 7.5% above it.
Bands of the yearly burn rate: low under 0.05%, moderate under 0.25%, high under 1%, very high 1% or more; towns of 2,500 people or more.
Fire danger and active fires (CWFIS)
Canadian Wildland Fire Information System: National Burned Area Composite 1986–2025 and fire behaviour fuel types (2026), Natural Resources Canada. Measured within 25 km and 5 km of each populated dissemination area; past fire, not a forecast.
No flood study is listed for Grassie
Flood studies whose area touches Grassie, from NRCan’s inventory, each linked to its owner.
The inventory has nothing for Grassie, but a local or conservation-authority map may still exist.
Towns with a flood study on file
Grassie has no flood study on file; only 18% of towns in Manitoba do, against 58% across Canada.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood studies don’t enter the grade; they are listed so you can open the official map for Grassie.
The inventory’s own caution (NRCan): “The Canada Flood Map (CFM) does not include every flood hazard map in Canada and may be incomplete or contain inaccuracies. It should not be relied upon as the official source of flood mapping information. Furthermore, if a map appears to be missing, this does not necessarily mean that the area has never been mapped. For the official version of a map, updated information, or confirmation of applicable regulations, please contact the local authority responsible for flood mapping.”
Little shaking expected in Grassie: $0.006 a year per $1,000
NRCan’s seismic risk model: the damage shaking is expected to do to buildings each year, on average over many years.
0.2 times the typical $0.030: Grassie’s $0.006 is low for Canada.
Grassie shares its earthquake risk numbers with the rest of the city of Winnipeg.
Shaking damage a year per $1,000 of building value
Earthquake risk around Grassie ($0.006) matches the middle in Manitoba ($0.006), far from Virden’s $0.007.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
88% of Canada’s 2,611 towns expect more shaking damage than Grassie.
Each column: the share of Canada’s towns of 2,500 people or more in that range of yearly loss per $1,000 (NRCan, 2022).
Roads, pipes and bridges aren’t in Grassie’s figure, nor landslides or tsunami: it is buildings and shaking.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
Radon runs high around Grassie: 12% of tested homes over the guideline
Health Canada’s survey of long-term home tests: the share above the 200 Bq/m³ guideline. · The radon tests numbers here cover the Winnipeg health region
More homes than usual test high around Grassie: 12% against 6.6% for the typical Canadian town.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
Radon around Grassie is ordinary for towns in Manitoba: 12%, beside a median of 12%.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
The 10–20% band holds 22% of Canada’s 2,611 towns, Grassie among them; 4.6% rank above.
Each bar: the share of Canada’s towns of 2,500 people or more whose survey area had that share of tests over 200 Bq/m³.
One home in Grassie can be high while next door is low; a three-month test settles it.
Health Canada, Cross-Canada Survey of Radon Concentrations in Homes (2009–2011).
Weather and fire alerts for Grassie
Alerts for Grassie come from Environment and Climate Change Canada and, for emergencies, Alert Ready.
| Alert | What it means |
|---|---|
| Warning | Severe weather is happening or about to: act now. |
| Watch | Conditions favour severe weather: be ready. |
| Advisory | Weather that is less severe but could disrupt the day. |
| Special weather statement | Unusual weather worth knowing about. |
| Special air quality statement | Poor air, often wildfire smoke. |
Alert Ready carries evacuation orders for Grassie to phones; CWFIS shows the day’s fire danger.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Hazards in the places around Grassie
The same four hazards for the places next door.
| Town | Wildfire | Quake $/1,000 | Radon | Flood study |
|---|---|---|---|---|
| Grassie | Low | $0.006 | 12% | None listed |
| Eaglemere 3,631 · 1.4 km | Low | $0.006 | 12% | None listed |
| Peguis 11,177 · 1.6 km | Low | $0.006 | 12% | None listed |
| Meadows 3,822 · 1.6 km | Low | $0.006 | 12% | None listed |
| Valley Gardens 8,329 · 1.8 km | Low | $0.006 | 12% | None listed |
| Springfield North 8,327 · 2.4 km | Low | $0.006 | 12% | None listed |
| Munroe East 8,873 · 2.5 km | Low | $0.006 | 12% | None listed |
The neighbour with the most fire is Eaglemere (low), still no more than Grassie (low).
Radon is the survey area’s figure, so neighbours in one area share it.
Get ready for what Grassie faces
What to do about the hazards Grassie faces, and what to ask before you buy.
- Test for three months in winter.
- Over 200 Bq/m³: fix it.
- Kits are cheap; pros test too.
- Never drive through floodwater.
- Move papers and medicines upstairs.
- Ask whether your street is mapped.
- Clear needles and wood nearby.
- Keep a grab-and-go bag ready.
- In smoke, stay in; filter air.
- Has it had a radon test?
- Ask the municipality for flood maps.
- Are flood and wildfire insured?
What this data can and can’t tell you
- Radon is a survey. Health Canada’s survey tested some 14,000 homes over three months; until postal-area boundaries are loaded, Grassie takes its 2007 health region’s share.
- Earthquakes are modelled. NRCan models what earthquakes would cost buildings each year on average, subdivision by subdivision; Grassie’s figure is its subdivision’s.
- Wildfire counts one way. Wildfire is read from the national burned-area record around Grassie’s homes since 1986, a history of fire that may lower Risk but never raises it.
- Flood studies aren’t flood zones. The flood inventory points to maps; it is incomplete and not the official source, so ask the municipality about any street in Grassie.
Questions about flooding and hazards in Grassie
How big is the earthquake risk in Grassie?
About $0.006 a year per $1,000 of building value, NRCan’s long-run expectation for Grassie.
Does Grassie flood?
With 0 studies on the inventory, Grassie’s flood risk is unmapped nationally; check with the municipality before buying.
How is Grassie’s Hazard risk Grade worked out?
Grassie grades B+ for hazard risk, from earthquakes and radon, with wildfire counted only where it lowers the grade.
Is radon a problem in Grassie?
Around Grassie, 66 survey homes were tested and 12% came in over 200 Bq/m³, a guide to the area, not to any one home.
Is Grassie at risk of wildfire?
Fire has reached 0% of the land around Grassie since 1986 (last in 2012); at low, it neither helps nor hurts the grade.
Seismic risk: Natural Resources Canada. Radon: Health Canada. Wildfire: Canadian Wildland Fire Information System. Flood studies: Natural Resources Canada, Canada Flood Map Inventory. Contains information licensed under the Open Government Licence – Canada.
Sources: NRCan, Canada’s Seismic Risk Model 2022 · Health Canada, Cross-Canada Survey of Radon Concentrations in Homes · CWFIS, National Burned Area Composite and FBP fuel types · NRCan, Canada Flood Map Inventory. Under the Statistics Canada Open Licence.
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).