Photo: https://www.flickr.com/people/naturallight/ Leslie Philipp · CC BY 2.0Coral Harbour faces fewer hazards than almost every Canadian town
For Coral Harbour, wildfire history is close to nil: 0% of nearby land since 1986, 0.000% a year. Shaking is less of a worry than in most places, at $0.012 a year per $1,000 of building value ($0.030 typical). In Health Canada’s survey, just 0% of homes tested in the area exceeded 200 Bq/m³ (6.6% typical). Hazard risk gives Coral Harbour a grade of A+; its wildfire band pulls it down.
What stands out about Coral Harbour’s hazards
Four national sources, each read for Coral Harbour: earthquakes, radon, past fires and flood studies.
What Coral Harbour faces
Each hazard against its own yardstick; meters run from low to high on that yardstick.
Wildfire
Earthquakes
Radon
Flood study
Coral Harbour grades A+ for hazard risk
Risk averages earthquakes and radon; wildfire joins only where it pulls the average down, so a town like Coral Harbour with little fire nearby would get no credit for it.
How sure: Earthquake losses are a model’s expectation over many years, not a forecast for any one. The radon share rests on 78 home tests in the survey area, so a few homes move it. Small fires and grass fires are largely missing from the national burned-area record.
Little of the land around Coral Harbour has burned: 0% within 5 km, 0% within 25 km since 1986
Past fire around Coral Harbour’s homes, from the national burned-area record, with the fuel within 5 km.
The yearly burn rate around Coral Harbour is 0.000%, low beside 0.000% for the typical Canadian town.
With 0% forest fuel within 5 km and 0% within 25 km, the land around Coral Harbour gives a fire little to burn.
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).
Measured against 2,610 towns, Coral Harbour is in the largest group, low (92%), and at its floor, while 7.5% rank higher.
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 Coral Harbour
What Canada’s Flood Map Inventory lists for Coral Harbour: who studied flooding and where to see their maps.
No flood study on the national inventory covers Coral Harbour; ask the municipality, which is the authority for its flood maps.
Towns with a flood study on file
Coral Harbour has no flood study on file; 58% of Canada’s towns have one.
NRCan Canada Flood Map Inventory: a study footprint touching the town’s boundary; towns of 2,500 people or more.
Flood mapping is shown for Coral Harbour to be opened and checked, never turned into a grade.
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.”
Earthquakes cost buildings in Coral Harbour just $0.012 per $1,000 a year
Expected yearly building losses from earthquakes, from Natural Resources Canada’s model.
0.4 times the typical $0.030: Coral Harbour’s $0.012 is low for Canada.
Shaking damage a year per $1,000 of building value
With too few towns in Nunavut for a median of their own, Coral Harbour is set beside Canada’s: $0.012 against $0.030.
NRCan seismic risk model (2022): mean yearly building loss per $1,000 of value; medians of towns of 2,500 people or more.
84% of Canada’s 2,611 towns expect more shaking damage than Coral Harbour.
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).
The model counts damage to Coral Harbour’s buildings and their occupants from shaking only: not liquefaction, landslides, tsunami or fires after a quake.
Natural Resources Canada, Canada’s Seismic Risk Model (2022), by census subdivision (2016 boundaries; a few 2021 subdivisions take their residents’ mean).
0% of homes tested around Coral Harbour are over the radon guideline
Long-term radon tests in homes across the survey area, against Health Canada’s guideline.
A lower share than most: 0% of tested homes around Coral Harbour, the typical Canadian town 6.6%. For radon tests, the only official count covers all of the Nunavut health region, Coral Harbour included.
Tested homes over 200 Bq/m³
Over 600 Bq/m³
There is no median in Nunavut to compare with: the territory has too few towns, so Coral Harbour’s 0% stands beside Canada’s figure.
Health Canada radon survey (2009–2011), by 2007 health region; medians of towns of 2,500 people or more.
The quietest radon band, under 5%, holds 37% of Canada’s 2,611 towns and Coral Harbour; 63% sit higher.
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 Coral Harbour 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 Coral Harbour
Alerts for Coral Harbour 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. |
Evacuation orders for Coral Harbour come from the municipality or the province, while CWFIS maps fire danger every day.
Weather alerts (ECCC) · Alert Ready · Fire danger and active fires (CWFIS)
Get ready for what Coral Harbour faces
What to do about the hazards Coral Harbour 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
- Earthquakes are modelled. Shaking damage is modelled from the ground, the buildings and the odds of each quake, and published for whole subdivisions such as Coral Harbour’s.
- Flood studies aren’t flood zones. NRCan’s inventory says where flood mapping exists, not where water goes; the map’s owner is the authority for Coral Harbour.
- Radon is a survey. About 14,000 homes were tested across Canada in 2009–2011, and the share over the guideline for Coral Harbour is its health region’s, the survey’s design unit.
- Wildfire counts one way. The wildfire figure is the share of land within 25 km of Coral Harbour’s homes burned each year from 1986 to 2025, past fire rather than a forecast, and it can only lower Risk.
Questions about flooding and hazards in Coral Harbour
Is Coral Harbour at risk of wildfire?
Hardly at all on record: 0% of the land within 25 km of Coral Harbour since 1986, a low band, though small grass fires aren’t mapped.
Is radon a problem in Coral Harbour?
Around Coral Harbour, 78 survey homes were tested and 0% came in over 200 Bq/m³, a guide to the area, not to any one home.
Does Coral Harbour flood?
With 0 studies on the inventory, Coral Harbour’s flood risk is unmapped nationally; check with the municipality before buying.
How is Coral Harbour’s Hazard risk Grade worked out?
Coral Harbour’s Hazard risk grade is A+, built on earthquakes and radon with a one-sided wildfire input.
How big is the earthquake risk in Coral Harbour?
NRCan’s model expects shaking to cost buildings in Coral Harbour $0.012 a year for every $1,000 of their value, on average over many years.
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).