Thunderstorm Outlook for Canada and the United States for Friday, April 19th, 2019.
Non-severe thunderstorms are expected in southern, and eastern ON, as well as southern QC, SE Alberta, and SW Saskatchewan. The main risk(s) will be lightning, and localized downpours.
There is an enhanced risk of severe thunderstorms through Florida, Alabama, the Carolinas, up to the mid-Atlantic states. The MLCAPE will be strongest between Florida, and southern Virginia, and the wind shear values at 50+, as well as dew point values at 68 to 70 Fahrenheit, making this area the most prone to these severe storms. The main threats are: hail 15%, damaging winds 30%, and a slight Tornado risk of 5%. There will also be a chance for non-severe storms in northern California, and the NW part of the U.S.
- Move to a sturdy building or car.
- Do Not take shelter under isolated trees.
- Get out of boats and away from water.
- Unplug appliances. Avoid using the telephone or any electrical appliances.
- Do not take a bath or shower.
- Remember when thunder roars go indoors!
The Enhanced Fujita Scale (EF-Scale) rates the strength of tornadoes in Canada and the United States based on the damage that they cause.