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July 20 Severe Thunderstorms

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Friday saw a supercell hit the London area with an associated tornado warning. the clouds were churning and a couple of small very brief funnels were reported in the Dorchester area. Today is looking to bring more of the same. The action should heat up by mid-afternoon. Below is a pic from London yesterday that I took during the tornado warning, a little after 1:00 PM, and hazard maps for today. I plan on chasing.







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3:13 PM EDT Saturday 20 July 2019
Severe thunderstorm watch in effect for:

Dunnville - Caledonia - Haldimand
Rodney - Shedden - Western Elgin County
St. Thomas - Aylmer - Eastern Elgin County
Goderich - Bluewater - Southern Huron County
Listowel - Milverton - Northern Perth County
Stratford - Mitchell - Southern Perth County
Wingham - Blyth - Northern Huron County
London - Parkhill - Eastern Middlesex County
Strathroy - Komoka - Western Middlesex County
Brantford - County of Brant
Woodstock - Tillsonburg - Oxford County
Sarnia - Petrolia - Western Lambton County
Watford - Pinery Park - Eastern Lambton County
Simcoe - Delhi - Norfolk
Chatham-Kent - Rondeau Park
Windsor - Leamington - Essex County

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

A line of strong to severe thunderstorms has formed over Michigan and is forecast to move southeastward across Southwestern Ontario this evening. Very strong wind gusts to 100 km/h will be possible with this line of storms, as well locally heavy rainfall accumulations.

Intense lightning is likely with any thunderstorm that develops.

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, send an email to ONstorm@canada.ca or tweet reports using #ONStorm.

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Fuel for afternoon/evening storms is building. From my back deck in the shade west of London: image.thumb.png.1fffa2b6b4b5285d1bcb257df83cd664.png

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