H.D. Chasing

05/04/2023

04/01/2023

EXPIRED: This rotation has weakened.

————-

Tornado Potential

(Locations listed below description)

11:44 AM - Sat, Apr 1, 2023:

We've detected focused rotation on this storm that is currently tracking east towards and Essex County. The rotation is most evident on TDTW radar and has cycled a few times as it's tracked east.

Rotation can produce a tornado in its lifespan. Damaging wind gusts, hail, and flooding, are also possibilities with minor rotation. Please be safe in the path of this storm and if it strengthens on radar, we will post a further update.

- Albuna
- Ambassador Beach
- Amherst Pointe
- Amherstburg
- Arner
- Bar Point
- Barretville
- Belcreft Beach
- Blytheswood
- Busy Bee Corners
- Cedar Beach
- Cedarhurst Park
- Cherry Lane Estates
- Coatsworth
- Colchester
- Comet
- Cottam
- Delisle's Corners
- East Harrow
- Edgars
- Edgewater Beach
- Elford
- Elmdale
- Erie Curve
- Essex
- Gesto
- Glen Eden
- Goldsmith
- Harrow
- Holiday Harbour
- Kingsville
- Klie's Beach
- Klondyke
- Lake Erie Country Club
- Lakewood Beach
- Leamington
- Levergood Beach
- Linden Beach
- Lypps Beach
- Maidstone
- Malden Centre
- Marentette Beach
- Marshfield
- McGregor
- Mount Carmel
- New California
- New Canaan
- North Ridge
- North Woodslee
- Oakland
- Oldcastle
- Olinda
- Oxley
- Paquette Corners
- Pelee Island
- Pelee Island South
- Pleasant Park
- Pleasant Valley
- Renwick
- River Canard
- Ruscom Station
- Ruthven
- Scudder
- Seacliffe
- Seymour Beach
- Sinasac Corners
- South Woodslee
- Staples
- Stevenson
- Sunset Beach
- The Meadows
- Union
- Vereker
- Wheatley
- Wigle
- Willow Beach
- Willowood
- Windfall

https://instantweather.ca/2023/04/01/xgeYbq-tornado-potential/

01/16/2023

12:06p FREEZING RAIN WARNING ISSUED by Environment Canada

DATE: Monday, January 16, 2023

(Locations listed below description)

Freezing rain overnight into Tuesday morning.

Hazard: Freezing rain.

Timing: Overnight into Tuesday morning.

Discussion: A brief period of freezing rain is expected beginning overnight. Freezing rain is expected to change over to light rain Tuesday morning.

Surfaces such as highways, roads, walkways and parking lots may become icy and slippery. Slow down driving in slippery conditions. Watch for taillights ahead and maintain a safe following distance. Poor weather conditions may contribute to transportation delays.

Please continue to monitor alerts and forecasts issued by Environment Canada.

To report severe weather in Ontario, send an email to [email protected] or tweet reports using .

NEW:

- Aylmer
- Blue Mountains
- Bluewater
- Blyth
- Delhi
- Dundalk
- Eastern Elgin County
- Eastern Middlesex County
- Goderich
- Hanover
- Kincardine
- London
- Norfolk
- Northern Grey County
- Northern Huron County
- Owen Sound
- Parkhill
- Saugeen Shores
- Simcoe
- Southern Bruce County
- Southern Grey County
- Southern Huron County
- St. Thomas
- Wingham

https://instantweather.ca/2023/01/16/Bd3yBl-freezing-rain-warning-issued/

09/20/2022

It appears that the last day of ‘astronomical’ summer (meteorological summer ended at the start of the month) will go out with a bang for parts of Southern Ontario. This is courtesy of a strong cold front expected to sweep across the region on Wednesday and spark off potentially widespread sever...

08/16/2022

4:10p SEVERE THUNDERSTORM WARNING ISSUED by Environment Canada

DATE: Tuesday, August 16, 2022

(Locations listed below description)

Updated or ended by 6:09 P.M. Edt.

At 4:10 P.M. Edt, Environment Canada meteorologists are tracking a line of severe thunderstorms capable of producing heavy rain.

This line of severe thunderstorms is located from new hamburg to St. Marys to Mount Carmel, moving Southwest at 20 km/h.

Hazard: Locally heavy rainfall of 50 mm within one hour.

Locations impacted include: Lucan, tavistock, ailsa craig, elginfield, granton, bryanston, wellburn, thorndale, kintore, Lakeside, Fairview, brooksdale, hickson, lieury, West mcgillivray, brinsley, mooresville, clandeboye, prospect Hill and devizes.

Heavy downpours can cause flash floods and water pooling on roads. Lightning kills and injures canadians every year. Remember, when thunder roars, go indoors!

Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing one or more of the following: Large hail, damaging winds, torrential rainfall.

The office of the fire marshal and emergency management recommends that you take cover immediately if threatening weather Approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather ... For Ontario, send an email to [email protected] or tweet reports using

for more information: Http://www.emergencymanagementontario.ca/English/beprepared/beprepared.html.

NEW:

- Eastern Middlesex County
- London
- Parkhill

https://instantweather.ca/2022/08/16/Ll73KS-severe-thunderstorm-warning-issued/

08/08/2022

3:39p SEVERE THUNDERSTORM WARNING CONTINUED by Environment Canada

DATE: Monday, August 8, 2022

(Locations listed below description)

Updated or ended by 5:38 P.M. Edt.

At 3:39 P.M. Edt, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing very strong wind gusts and heavy rain.

This severe thunderstorm is located 5 kilometres Southwest of Brigden, moving East at 50 km/h.

Hazard: 90 km/h wind gusts and torrential rain.

Locations impacted include: Petrolia, oil Springs, wilkesport, Brigden, oil city, Inwood, bickford, ladysmith, payne, seckerton, avonry, Kimball, Moore Centre, colinville, waubuno, sykeston, bradshaw, cromar, edys mills and Glen Rae.

Heavy downpours can cause flash floods and water pooling on roads. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Remember, severe thunderstorms can produce tornadoes.

The office of the fire marshal and emergency management recommends that you take cover immediately if threatening weather Approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather ... For Ontario, send an email to [email protected] or tweet reports using

for more information: Http://www.emergencymanagementontario.ca/English/beprepared/beprepared.html.

CONTINUED:

- Petrolia
- Sarnia
- Western Lambton County

https://instantweather.ca/2022/08/08/9Fwg4Z-severe-thunderstorm-warning-continued/

08/03/2022

9:57a SEVERE THUNDERSTORM WATCH ISSUED by Environment Canada

DATE: Wednesday, August 3, 2022

(Locations listed below description)

Conditions are favourable for the development of dangerous thunderstorms that may be capable of producing strong wind gusts, large hail and torrential rain.

Hazards: Wind gusts near 90 km/h. Nickel size hail. Torrential downpours with rainfall amounts possibly in excess of 50 mm.

Timing: Late this morning into this evening.

Discussion: Thunderstorms are expected today. Some of these thunderstorms may become severe with strong winds, large hail and heavy rain. Tornadoes also can not be ruled out. The potential for severe thunderstorms will come to an end this evening.

Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Remember, severe thunderstorms can produce tornadoes. Heavy downpours can cause flash floods and water pooling on roads. Stay indoors when a thunderstorm strikes. There isn't a place outside that is safe during a thunderstorm.

Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: Large hail, damaging winds, torrential rainfall.

The office of the fire marshal and emergency management recommends that you take cover immediately if threatening weather Approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather ... For Ontario, send an email to [email protected] or tweet reports using

for more information: Http://www.emergencymanagementontario.ca/English/beprepared/beprepared.html.

NEW:

- Angus
- Barrie
- Caledon
- Cambridge
- Coldwater
- Collingwood
- Eastern Lambton County
- Eastern Middlesex County
- Erin
- Grand Valley
- Guelph
- Hillsdale
- Innisfil
- Kitchener
- Komoka
- Lagoon City
- London
- Mansfield
- Midland
- New Tecumseth
- Northern Dufferin County
- Orangeville
- Orillia
- Orr Lake
- Oxford County
- Parkhill
- Petrolia
- Pinery Park
- Region Of Waterloo
- Sarnia
- Shelburne
- Southern Dufferin County
- Southern Wellington County
- Strathroy
- Tillsonburg
- Washago
- Watford
- Western Lambton County
- Western Middlesex County
- Woodstock

https://instantweather.ca/2022/08/03/szZXEZ-severe-thunderstorm-watch-issued/

07/20/2022

If you are in or around Lucan take shelter.

07/20/2022

3:01p SEVERE THUNDERSTORM WARNING ISSUED by Environment Canada

DATE: Wednesday, July 20, 2022

(Locations listed below description)

Updated or ended by 5:00 P.M. Edt.

At 3:01 P.M. Edt, Environment Canada meteorologists are tracking a line of severe thunderstorms capable of producing strong wind gusts and up to nickel size hail.

This line of severe thunderstorms is located from 15 kilometres Northwest of Windsor to 35 kilometres Southwest of amherstburg, moving East at 65 km/h.

Hazard: 90 km/h wind gusts and nickel size hail.

Locations impacted include: Windsor, amherstburg, Tecumseh, lasalle, South Windsor, McGregor, Windsor airport and Maidstone.

Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Lightning kills and injures canadians every year. Remember, when thunder roars, go indoors!

The office of the fire marshal and emergency management recommends that you take cover immediately if threatening weather Approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather ... For Ontario, send an email to [email protected] or tweet reports using

for more information: Http://www.emergencymanagementontario.ca/English/beprepared/beprepared.html.

NEW:

- Essex County
- Leamington
- Windsor

https://instantweather.ca/2022/07/20/NWM6WG-severe-thunderstorm-warning-issued/

07/20/2022

(Locations listed below description) Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts and large hail. Hazards: Damaging wind gusts up to 100 km/h. Nickel size hail possible....

07/20/2022

*****EXPIRED*****

1:36p TORNADO WATCH ISSUED (On Water) by Environment Canada

DATE: Wednesday, July 20, 2022

(Locations listed below description)

Conditions are favourable for the development of severe thunderstorms which may produce tornadoes. Strong winds and large hail are also possible.

Thunderstorms moving in from eastern Michigan this afternoon will pose a risk of tornadoes.

NEW:

- Western Lake Erie

https://instantweather.ca/2022/07/20/ou4zLL-tornado-watch-issued/

07/20/2022

*****EXPIRED*****

12:10p TORNADO WATCH ISSUED by Environment Canada

DATE: Wednesday, July 20, 2022

(Locations listed below description)

Conditions are favourable for the development of severe thunderstorms which may produce tornadoes. Strong winds and large hail are also possible.

Hazards: A few tornadoes, including the possibility of strong tornadoes. Damaging wind gusts of 90 to 110 km/h. Nickel to toonie size hail.

Timing: This afternoon and evening.

Discussion: Thunderstorms that develop over eastern Michigan are expected to affect the area beginning this afternoon. A few tornadoes are possible, some of which may be strong. The greatest probability of tornadoes will be mid to late afternoon.

Be prepared for severe weather. Take cover immediately, if threatening weather Approaches.

In the event of a tornado, or if a tornado warning is issued for your area, it is recommended you take the following actions: Go indoors to a room on the lowest floor, away from outside walls and windows, such as a basement, bathroom, stairwell or interior closet. Leave mobile homes, vehicles, tents, trailers and other temporary or free-standing shelter, and move to a strong building if you can. As a last resort, lie in a low spot and protect your head from flying debris.

The office of the fire marshal and emergency management recommends that you take cover immediately if threatening weather Approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather ... For Ontario, send an email to [email protected] or tweet reports using

for more information: Http://www.emergencymanagementontario.ca/English/beprepared/beprepared.html.

NEW:

- Arthur
- Barrie
- Bayfield Inlet
- Baysville
- Blue Mountains
- Bluewater
- Blyth
- Bracebridge
- Bruce Peninsula
- Burk's Falls
- Chatham-Kent
- Coldwater
- Collingwood
- Dunchurch
- Dundalk
- Eastern Lambton County
- Eastern Middlesex County
- Essex County
- Goderich
- Gravenhurst
- Hanover
- Hillsdale
- Huntsville
- Killbear Park
- Kincardine
- Komoka
- Lake Of Two Rivers
- Leamington
- Listowel
- London
- Mansfield
- Midland
- Milverton
- Mitchell
- Mount Forest
- Northern Dufferin County
- Northern Grey County
- Northern Huron County
- Northern Perth County
- Northern Wellington County
- Orr Lake
- Owen Sound
- Parkhill
- Petrolia
- Pinery Park
- Port Carling
- Port Severn
- Rondeau Park
- Rosseau
- Sarnia
- Sauble Beach
- Saugeen Shores
- Shelburne
- South River
- Southern Bruce County
- Southern Grey County
- Southern Huron County
- Southern Perth County
- Stratford
- Strathroy
- Tobermory
- Town of Parry Sound
- Watford
- Western Algonquin Park
- Western Lambton County
- Western Middlesex County
- Windsor
- Wingham

https://instantweather.ca/2022/07/20/Exy9HR-tornado-watch-issued/

07/20/2022

*****EXPIRED*****

12:10p TORNADO WATCH ISSUED (On Water) by Environment Canada

DATE: Wednesday, July 20, 2022

(Locations listed below description)

Conditions are favourable for the development of severe thunderstorms which may produce tornadoes. Strong winds and large hail are also possible.

Thunderstorms moving in from eastern Michigan this afternoon will pose a risk of tornadoes.

NEW:

- Lake St. Clair
- Northern Georgian Bay
- Northern Lake Huron
- Southern Georgian Bay
- Southern Lake Huron

https://instantweather.ca/2022/07/20/07u0vC-tornado-watch-issued/

07/20/2022

11:37a SQUALL WATCH ISSUED (On Water) by Environment Canada

DATE: Wednesday, July 20, 2022

(Locations listed below description)

Conditions are favourable for the development of squalls with wind gusts up to 60 knots, frequent lightning and hail.

Thunderstorms are expected to develop this afternoon and will affect Lake Huron and Georgian Bay.

Damaging wind gusts will be the main threat, though large hail and a few waterspouts are also possible.

NEW:

- Northern Georgian Bay
- Northern Lake Huron
- Southern Georgian Bay
- Southern Lake Huron

https://instantweather.ca/2022/07/20/UIfmOj-squall-watch-issued/

07/20/2022

Issued yesterday by ECCC, valid for today.
We're looking at potential storms this afternoon and evening.
Have a safety plan in place, charge your devices and have multiple ways to be aware of warnings.

07/19/2022

6:38p SEVERE THUNDERSTORM WARNING ISSUED by Environment Canada

DATE: Tuesday, July 19, 2022

(Locations listed below description)

Updated or ended by 8:37 P.M. Edt.

At 6:38 P.M. Edt, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing very strong wind gusts, up to nickel size hail and heavy rain.

Heavy downpours can cause flash floods and water pooling on roads. Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Lightning kills and injures canadians every year. Remember, when thunder roars, go indoors!

The office of the fire marshal and emergency management recommends that you take cover immediately if threatening weather Approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather ... For Ontario, send an email to [email protected] or tweet reports using

for more information: Http://www.emergencymanagementontario.ca/English/beprepared/beprepared.html.

NEW:

- Eastern Lambton County
- Pinery Park
- Watford

https://instantweather.ca/2022/07/19/zVII5H-severe-thunderstorm-warning-issued/

07/19/2022

*****EXPIRED*****

Significant Severe Thunderstorm Risk (Wed, Jul 20, 2022)

Details, timing, and Environment Canada's "High" risk forecast: https://instantweatherinc.com/articles/2022/7/20/significant-severe-thunderstorm-risk-tue-jul-20-2022

- Adam

05/31/2022

WEDNESDAY: Isolated Severe Thunderstorm Risk Overnight, Morning, Afternoon, and Evening (Wed, Jun 1, 2022)

For a detailed break down of timing, location and risks, please visit our website: https://instantweatherinc.com/articles/2022/6/1/isolated-severe-thunderstorm-risk-overnight-morning-afternoon-and-evening-wed-jun-1-2022

- Adam

05/28/2022

remember, sun or snow you should wear sunscreen! and while we get in to the warmer months remember to stay hydrated and reapply the sunscreen as needed!

, 30 years ago, Canada became the first country in the world to add the UV Index to its weather forecast. The index was invented by three of our scientists, Drs. Tom McElroy, Jim Kerr and David Wardle, in response to concerns over the thinning ozone layer.

The great success of the UV Index over the years lies in its simplicity: it translates complex scientific information on the ozone layer and the strength of the sun’s rays into a simple numeric scale.

In Canada, the UV Index is highest in the spring and the summer between 11 a.m. and 3 p.m. Be extra careful at the beach or lake - you can sunburn quickly - as you are exposed to more UV.

Our UV Index forecast is available for “today” and “tomorrow” on the 7-DAY tab of our WeatherCAN app, and on our website, WHEN THE INDEX IS 1 OR HIGHER.

For more on UV index and sun safety: http://ow.ly/vj8W50JjP1T

05/27/2022

NTP has confirmed two EF1 tornadoes that occurred along the leading edge of the May 21st as it moved through London, ON.

Details at the NTP blog: https://t.co/n3xuVoKcTm

We continue to follow up on numerous reports of significant damage in southern Ontario.

05/22/2022

Here is the current weather summary from yesterday's storm, issued by Environment Canada. This isn't the final report but gives everyone an idea of both how wide spread the damages were and the windspeeds this beast produced.

05/22/2022

Parts of Ontario and Quebec experienced a weather phenomenon known as a derecho. It's a widespread, long-lived wind storm that is associated with a band of rapidly moving showers or thunderstorms. Extremely rare for Canada.

It all has to do with something called a downburst. When the wet air in a thunderstorm meets the drier air surrounding it, the water in the air evaporates. When water evaporates, it cools the air around it. Since the cool air is denser, it rapidly sinks to the ground and creates strong winds called downbursts.

The downburst can actually suck more dry air into the storm, making even stronger downbursts or clusters of downbursts. Derechos happen when the right conditions for downbursts occur over a wide area. In fact, a derecho’s path of damage is at least 390 kilometres long. That’s a huge storm!

As the storm grows in size, it forms what are known as bow echoes—large curved packs of thunderstorms that race forward in one direction. These bow echoes form because the downbursts are stronger in the center of the storm. Stronger downbursts mean faster winds. The faster winds race ahead of the storm, creating a bow. They are impressive to see both on the ground and from the sky.

Illustration Credit: NOAA/JPL-Caltech

05/22/2022

So it’s official, that a derecho traveled from Windsor to Ottawa (754km), with hurricane force winds, left behind a large path of destruction.

This storm was historic with the highest wind speed of 131km/h recorded in Kitchener, Ontario. The city Ottawa recorded 120km/h.

Unfortunately, there were deaths and injuries that occurred as a result.

05/21/2022

Some aftermath photos of today's storm that went through London.

05/19/2022

https://twitter.com/ECCCWeatherON/status/1527367730638241792?s=20&t=VjgFM5mKkcMvQ_qFSMDGpg

“Thunderstorm Outlooks for Ontario valid for Friday and Saturday. ”

05/15/2022

On the night of May 15-16, if the sky is clear, a total lunar eclipse will be visible across the country. 🌑

The eastern part of Canada will be able to see the entire eclipse, while Western Canada will miss part of the penumbral phase (when the Moon crosses the Earth's penumbra).

A lunar eclipse occurs when the Earth moves between the Moon and the Sun, and the Moon passes through the shadow cast by the Earth.

Throughout a lunar eclipse, the Moon can take on a reddish colour. This is because the only remaining sunlight reaching the Moon at that point is from around the edges of the Earth, as seen from the Moon's surface.

If we were standing on the Moon during an eclipse, we would see all Earth's sunrises and sunsets at once! 😲

Will the sky be clear for the eclipse in your area? Astronomical forecasts: https://weather.gc.ca/astro/index_e.html

📷 Total Lunar Eclipse seen from Toronto in December 2010.

05/01/2022

Outside of London near the new Amazon building

05/01/2022

Looks like we have a storm heading our way. Place bets on if it will disappear before london? Lol

04/24/2022

7:36p SPECIAL WEATHER STATEMENT CONTINUED by Environment Canada

DATE: Sunday, April 24, 2022

(Locations listed below description)

Isolated strong wind gusts associated with thunderstorms expected this evening.

Isolated thunderstorms are forecast to move across the area late this evening. While the thunderstorms are not expected to be particularly strong, isolated wind gusts up to 70 or 80 km/h will be possible.

Local power outages may occur as well as some damage to tree branches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using .

CONTINUED:

- Arthur
- Blue Mountains
- Bluewater
- Blyth
- Bruce Peninsula
- Chatham-Kent
- Dundalk
- Eastern Lambton County
- Eastern Middlesex County
- Essex County
- Goderich
- Hanover
- Kincardine
- Komoka
- Leamington
- Listowel
- London
- Milverton
- Mitchell
- Mount Forest
- Northern Grey County
- Northern Huron County
- Northern Perth County
- Northern Wellington County
- Owen Sound
- Parkhill
- Petrolia
- Pinery Park
- Rondeau Park
- Sarnia
- Sauble Beach
- Saugeen Shores
- Southern Bruce County
- Southern Grey County
- Southern Huron County
- Southern Perth County
- Stratford
- Strathroy
- Tobermory
- Watford
- Western Lambton County
- Western Middlesex County
- Windsor
- Wingham

https://instantweather.ca/2022/04/24/AsGOEy-special-weather-statement-continued/