Squall — Eastern Lake Ontario
Right now
The most recent data we hold from Environment and Climate Change Canada arrived 18 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
3 other detections within 20 km in the last 24 hours, the nearest 7 km from here.
Official warning
This warning has expired. Its original text remains below.
Highest level recorded: Severe.
Level in this notice: Severe.
Environment Canada
squall watch in effect
Conditions are favourable for the development of squalls with wind gusts up to 35 knots this afternoon.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway.
This alert expired on 9 October 2026 at 01:01 UTC. It is kept here as a record.
It is one of only 4 we have recorded within 20 km of this point since 8 October 2026.
What the source measured
Environment and Climate Change Canada reported: Conditions are favourable for the development of squalls with wind gusts up to 35 knots this afternoon. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Urban PEI: 135,681 within a heuristic 50 km radius; not unique people.
How we know
One source: Environment and Climate Change Canada. Not yet confirmed by a second, independent source.
Our own score for this event is 49 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Event data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 49 / 100 |
| Legacy data-support index | 0.64/1 |
| Coordinates | 43.9237, -77.1905 |
| Nearest city | Prince Edward (10 km) |
| Urban exposure index (PEI) | 135.7K within 50 km |
| Impact tier | severe |
| Timestamp | 2026-10-08T18:11:00.000Z |
| Source | https://dd.weather.gc.ca/today/alerts/cap/20261008/CWTO/17/T_WHCN13_C_CWTO_202610081707_4223256866.cap |
| Licence | ECCC Data Services End-use Licence 2.1.1 · Environment and Climate Change Canada · Grouped by area and warning; CAP severity mapped; map location derived from alert geometry. Original warning text preserved. |
Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: cap_ca_eccc. Occurrence: 2026-10-08T18:11:00.000Z.
First archived: 2026-10-08T17:39:42.717Z. Material modification: 2026-10-08T18:39:47.740Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
3 retained revisions changed source fields this page does not show; the index, severity and version stayed the same.
Score breakdown
Technical details
| Event | squall |
| AreaDesc | Eastern Lake Ontario |
| Geocodes | [{"name":"layer:EC-MSC-SMC:1.0:CLC","value":"002911"},{"name":"profile:CAP-CP:Location:0.3","value":"3510005"},{"name":"profile:CAP-CP:Location:0.3","value":"3511005"},{"name":"profile:CAP-CP:Location:0.3","value":"3511015"},{"name":"profile:CAP-CP:Location:0.3","value":"3512002"},{"name":"profile:CAP-CP:Location:0.3","value":"3512004"},{"name":"profile:CAP-CP:Location:0.3","value":"3513"},{"name":"profile:CAP-CP:Location:0.3","value":"3514004"},{"name":"profile:CAP-CP:Location:0.3","value":"3514014"}] |
| Onset | 2026-10-08T19:00:00-00:00 |
| Effective | 2026-10-08T17:09:02-00:00 |
| Expires | 2026-10-09T01:01:02-00:00 |
| TimeBasis | onset |
| LocalDay | 20261008 |
| CapTimeZone | America/Toronto |
| CapDayBasis | area-centroid-timezone |
| CapSeverity | Severe |
| DailyPeakCapSeverity | Severe |
| CapUrgency | Expected |
| CapCertainty | Possible |
| Urgency | Expected |
| Certainty | Possible |
| Headline | squall watch in effect |
| Description | Conditions are favourable for the development of squalls with wind gusts up to 35 knots this afternoon. ### Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations. |
| Instruction | Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway. |
| SenderName | Environment Canada |
Safety information
What to do under a weather warning
A warning says what weather to expect, what it may do and how sure the forecasters are. Three things first, then what to do before, during and after. From the UK Met Office’s guide to weather warnings and Ready.gov (FEMA).
For this reportSevere Weather · Prince Edward
Read the warning, not only its colour
It says which weather, where, what it may do and how likely that is. The colour is the summary, not the whole message.
Met OfficeOrange or red: change your plans
Orange, or amber, means the impacts are more likely: think again about travelling and protect yourself and your home. Red means dangerous weather is expected: act now, avoid travel, follow the emergency services.
Met OfficeStay informed until it ends
Warnings are updated, raised and extended. Keep following your national weather service and the local news.
Met Office · Ready.gov
Before, during, after. Here it is “after”.
Before · Before the weather arrives
Get the warnings
From your national weather service: its app, its website or alerts on your phone.
Be ready for a power cut
A torch, batteries and a charged phone.
Think of the people near you
Older neighbours, people who live alone, anyone who would struggle without roads or power.
Met Office · Ready.gov (FEMA)
During · While the warning is in force
Avoid travel if you can
Above all under an orange or red warning: roads and railways may close.
Follow the authorities
And the emergency services, who know the local situation.
Met Office
After · When the warning ends
Mind the damage
Keep away from fallen power lines and damaged buildings.
Ready.gov (FEMA)
Questions people ask
What do the colours of a warning mean?
Yellow: be aware, some disruption is likely, or worse is possible but less likely. Orange or amber: be prepared, the impacts are more likely, change your plans. Red: take action, dangerous weather is expected. Source: Met Office.
Is a yellow warning serious?
It can be: some yellow warnings are for impacts that are unlikely but would be severe if they happened. Read the warning to see which kind it is. Source: Met Office.
Review the area, threshold and delivery channel in your account.