User:JForget/August 2006 Quebec-Ontario severe weather outbreak
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| Date of tornado outbreak: | August 1-2, 2006 |
| Duration1: | about 30 hours |
| Maximum rated tornado2: | F2 tornado |
| Tornadoes caused: | 10 confirmed + 3 unconfirmed |
| Damages: | |
| Fatalities: | 0 + 2 non-tornadic |
| Areas affected: | Quebec and Ontario |
|
1Time from first tornado to last tornado |
|
The August 2006 Quebec-Ontario severe weather outbreak is a series of severe thunderstorms that affected southern portions of these two provinces on August 1 and August 2 causing numerous power outages, structural damage and 2 deaths.
The event in question will be divided in three diffrent periods in this article :
- Eastern Ontario : early morning hours of August 1
- Southern Quebec : evening hours) of August 1
- Southern and Eastern Ontario : evening hours of August 2
.
Contents |
[edit] Reported tornadoes
| Confirmed Total |
Confirmed F0 |
Confirmed F1 |
Confirmed F2 |
Confirmed F3 |
Confirmed F4 |
Confirmed F5 |
| 10 | 2 | 5 | 3 | 0 | 0 | 0 |
[edit] August 1 event
| F# | Location | Region | Time (EDT) | Path length | Damage | |
|---|---|---|---|---|---|---|
| Quebec | ||||||
| F1 | St-Gédéon de Beauce | Chaudière-Appalaches | Damage to maple trees. Damage amount : 150 000$ CAN. | |||
| F2 | Lac-Drolet | Estrie | about 8:00PM | Several trees and houses received significant damage. 2 people were injured. | ||
[edit] August 2 event
Source : [1]
| F# | Location | County/Region | Time EDT | Path length | Damage | |
|---|---|---|---|---|---|---|
| Ontario | ||||||
| F? | Guelph area | Wellington | 3:30 PM EDT | Spotted by trained weather spotter | ||
| F1 | West Guilford | Haliburton | 7:20PM | 12 km | tress uprooted, roofs partially destroyed, hydro lines down | |
| F0 | Uffington | Muskoka | 7:25PM | 250 metres | trees down | |
| F1 | Drag Lake | Haliburton | 7:40 PM | 10km | about 1/3 mile wide, cottages damaged, hydro lines down | |
| F1 | Minden Hills | Haliburton | 7:40PM | 14km | Suspension bridge was damaged by the storm, Boat shed destroyed, | |
| F0 | Catchacoma | Peterborough | 8:00PM | 7km | numerous trees damaged | |
| F1 | Anstruther Lake | Peterborough | 8:05PM | 2km | Trees damaged | |
| F2 | Combermere | Renfrew | 8:30 PM EDT | 3 kilometres | Several cottages and trailers were destroyed or flown into the Madawaska River. Home Hardware store severely damaged. | |
| F? | Combermere | Renfrew | 8:30 PM EDT | Reports by public of a second tornado (possibly satellite tornado of F2) | ||
| F2 | E of Bancroft | Hastings | 8:50PM | 10 kilometres | House was heavily damaged, losing two walls and a roof. Two barns were destroyed | |
| F? | Hagersville | Haldimand | 1:30AM | Portions of a silo tower crashed against a facade of a home | ||
[edit] August 1 - Eastern Ontario
The least significant activity of the outbreak affected the National Capital Region between midnight and 4:00AM EDT.
During the late evening hours of July 31, a cluster of thunderstorms developped in the Pontiac region of western Quebec and in northeastern Ontario. At around midnight, the activity reached the Ottawa region and persisted for several hours. A severe thunderstorm warning was issued for the city at about 1:00 AM EDT. Torrential downpours created flash flooding in many areas in the east end of the city with more reports in Prescott-Russell and Stormont-Dundas-Glengarry Counties. Isolated hail has also reported in locations across Eastern Ontario and western Quebec.
However, the main story from this storm, was its frequent cloud to ground lightning activity. One of its bolts struck a seniors residence complex in Gatineau, causing a massive blase which destroyed about half of the building. A difficult evacuation plan ensued to remove all the seniors with many of them who were not aware of what happen or didn't know what to do. Due to the success of the evacuation process, there were minor injuries only - generally smoke inhalation cases.
[edit] August 1 - Southern Quebec
A line of storms developped over the Upper Laurentians during the early evening hours and quickly became severe as it raced through the touristic regions of Saint-Sauveur, Mont Tremblant and Sainte-Adele right along and near Autoroute 15 and Highway 117. Numerous trees were downed and power outages were reported. Some of the areas didn't got their power back until one week later.
At about 9 PM, the line entered the Montreal area and produced winds in excess of 80 to 90 kph. 1 person was dead when a tree crashed through its car while he was driving in the Notre-Dame de Grace area of the city. Another person was killed while being struck by lightning in the Mauricie region between Montreal and Quebec City. [1] [2]
Ahead of the main line, supercells produce an F2 tornado in Lac Drolet near the Lac Megantic area in the Eastern Townships. Some homes were severely damaged and 2 people were injured when the roof of their house flew off as well as some their interior walls. [3]. Another F1 struck St-Gedeon de Beauce east of Quebec City damaging numerous maple trees. [4]
Overall, nearly half-a-million Hydro-Quebec customers were without power during the peak of the storm with the Laurentians being the hardest area. Some of them were without power for a week. [5]
[edit] August 2 - Southern Ontario tornado outbreak
During the transition day being the tropical heat and humidity and some more seasonalble air, a widespread severe event affected the vast majority of southern and eastern Ontario.
During the early evening hours, a line of storms formed in eastern Michigan and crossed Lake Huron towards Georgian Bay. The northern edge of the line became a bow echo, but the southern edge of the line was stalled over southern Michigan near the Flint and Lansing areas. The line entered the Georgian Bay region at around 7:00 PM. Areas of Midland, Barrie and Orilla were the first affected by the squall line. The storm travelled at a quick rate through Southern Ontario, affecting the Toronto region by mid-evening before weakening while exiting the region before midnight.
Ahead of the line, supercell thunderstorms erupted in the Haliburton region as well as in the Ottawa area. 8 tornadoes struck in a area from Georgian Bay to near Peterborough.
The most severe tornado in the outbreak was an F2 that touched down in Combermere near Bancroft in Renfrew County. The twister ripped through cottages, campgrounds and destroyed a Home Hardware store. Another F2 hit near Bancroft in Hastings County damaging one home and destroying two barns. Other tornadoes were rated F0 or F1 and located in Haliburton, Muskoka and Peterborough counties. This was the biggest tornado outbreak since the Canadian-Us Tornado Outbreak of May 31 1985 when 13 hit Southern Ontario including the deadly F4 Barrie tornado that killed 12.
In Ottawa, a supercell crossed the city between 8:30 and 10:30 PM bringing torrential rains all across the city. A tornado was even issued at around 9:00 PM due to several tornado signatures caught on radar with that particular supercell. Severe water poundering was reported on several major roads and streets near downtown. Mores downpours occured around 1:00 AM especially north of the city.
In Orleans, flooding was reported inside homes, but it was not nearly severe as an earlier super storm in July which temporarily paralized the Ottawa suburb. when a torrential downpour struck the area for about an hour flooding major streets and homes while toppling some power poles. This time only a handful of homes were affected, while several other across the city also experienced flooding. In Masson-Angers, the downpour caused a landslide behind a series of residence, but the homes were not touched.
Between 25 and 75 millimetres of rain felled across the region with the supercell and the cold front. No injuries or fatalities were reported during the storm.
In Gatineau, despite being under a tornado warning at 9:00 PM, the annual Casino du Lac Leamy Sound of Lights fireworks competition went underway. 10 000 still attended the event despite the heavy rains and countinous lightning. However, the festival orginaisation and Environment Canada were in touch through the event all night. [6]
[edit] Derechos?
While the latter two storms on in Quebec on August 1 and in Ontario on August 2 look similar to a derecho. Environment Canada haven't confirmed it. Similar lines affected many of those regions on July 17 producing similar damage with similar power outages.
[edit] References
- ^ LCN. "Deux morts et des pannes d'électricité", TVA, August 2, 2006.
- ^ LCN. "Un automobiliste meurt à Montréal", TVA, August 1, 2006.
- ^ LCN. "Une tornade de force F2 souffle Lac-Drolet", TVA, August 2, 2006.
- ^ LCN. "Une érablière ravagée par les vents", TVA, August 2, 2006.
- ^ LCN. "Deux morts et des pannes d'électricité", TVA, August 2, 2006.
- ^ Langlois, Chrisitne, La tenue des Grands feux malgré les intempéries surprend (Fireworks show during downpour surprised many), Le Droit, Ottawa, August 4, 2006, page 9.
