The active model continues on the prairies this weekend, with numerous rounds of widespread rain and thunderstorms expected to continue next week. There is an increased risk of local development of strong to severe storms, as extreme and dangerous heat accumulates. However, the rain will be very useful for replenishing groundwater in western areas that have recently suffered severe drought conditions, albeit with the threat of more localized floods after days of heavy rain earlier this week. More about the weather and the effects of the storm this weekend, below.
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THIS WEEKEND: MANY THREATS OF THUNDERSTORM THREATEN AMONG EXTREME HEAT
Some thunderstorms are forecast again at the southern foothills of Alberta on Friday, as storms develop until early evening in the southeastern part of BC. and southwestern Alberta. These storms will be traced to the northeast in the late evening and at night, causing locally heavy rainfall, strong gusts of wind and probably a little hail.
Most of the storm’s energy is in southeastern Saskatchewan on Friday, but there is only a conditional threat of storm development due to an upper limit that is present for most of the day.
“Extreme heat present on the surface and even in the upper atmosphere will prevent most storms from developing, but if storms manage to break through, especially down Montana and move north of the border, these storms will have to potentially it will be severe with the threat of strong winds and hail, “said Kelly Sonnenburg, a meteorologist with The Weather Network.
Some lightning thunderstorms at night and local torrential rains are also forecast in the Edmonton area.
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Heavy thunderstorms will be possible for southern Alberta and Saskatchewan again on Saturday as a low-pressure system advances north from Montana to southern Saskatchewan.
Isolated to scattered thunderstorms will develop in the late afternoon until the early evening hours, with a greater potential to pass severe by evening.
“Supercells will also be possible in southern Alberta, and heavy hail would be a serious threat,” warns Sonnenburgs.
By Sunday, the threat of a storm was pushed east toward South Saskatchewan and southern Manitoba as the low-pressure system continued to be tracked east. There will probably be a cap with the extreme heat, but storms that can break out are likely to get severe very quickly.
WARNINGS FOR WIDE HEAT DISTRIBUTION IN ACTION
In addition to the multi-day threat of thunderstorms, days of high heat and tropical humidity will spread from west to east in the southern prairies this weekend. Daily temperature records and dangerous humidity values are likely.
Heat warnings are in effect in Saskatchewan, as a heat dome in the southern United States will transport the northern ridge to the prairies.
Widespread low to even average 30-degree temperatures are forecast for southern and central Saskatchewan on Saturday, while southern Manitoba will be the focus of heat from mid-30 ° C on Sunday.
“Extreme heat affects everyone,” the Environmental and Climate Change Warning in Canada (ECCC) said. “The risk is higher for young children, pregnant women, the elderly, people with chronic illnesses and people who work or train outdoors. Watch for the consequences of heat illness: swelling, rash, cramps, seizures, heat exhaustion, heat stroke and worsening of some health conditions. Drink plenty of water, even before you feel thirsty, and stay in a cool place. Check out older family, friends and neighbors. Make sure they are cool and drink water. “
Much cooler conditions are expected next week, although they remain warmer at times for parts of Manitoba.
Be sure to check back for updates this weekend as we continue to refine the details of the storm weather forecast and severity.
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