Thunderstorm moves into Saint John, 12 June 2017 (AKS/Twitter)
After three days of daytime highs above 28 C in Greater Moncton, much cooler weather is coming thanks to a cold front and a change in wind direction.
The warm sometimes unstable air mass has created severe thunderstorms across the region.
Flash flooding was reported in Saint John yesterday after heavy downpours with wind and and hail which were also observed today in northeastern Nova Scotia.
Environment Canada is forecasting below seasonal temperatures for Southeast New Brunswick over the next couple of days.
Hail up to 30 cm deep fell near Calgary, AB, 28 June 2016 (Facebook)
Severe thunderstorms across Alberta delivered not only heavy rain but also heavy hail the size of quarters near Calgary yesterday.
The hail was so heavy and deep that it accumulated like snow and made an early summer day look downright wintry.
Funnel clouds and possible tornadoes were also reported during the stormy conditions.
Dark clouds over NE Moncton, 31 May 2016 (Dearing)
The warmest temperature so far in 2016 was recorded in Greater Moncton this afternoon with a warm high of 29.5 C – beating today’s record of 29.3 C from 1999.
But a strong cold front moved across Southeast New Brunswick which prompted Environment Canada to issue a severe thunderstorm warning shortly after 6pm.
In less than an hour, the temperature dropped nine degrees from 27 C to 18 C and hail was reported north of Moncton.
The front has ushered in much cooler temperatures with a high tomorrow of only 13 C and a risk of frost by early Thursday morning.
Shoppers stock up during a blizzard in Rapid City, South Dakota, USA, 05 Oct 2013 (AP)
October snowfall records were shattered in South Dakota where more than 50 cm of heavy, wet snow fell in Rapid City and more than 100 cm in the Black Hills after a powerful cold front crossed the Great Plains.
Impassable roads and power outages plagued South Dakota today and some motorists had to be rescued by snowmobilers.
Further south, severe thunderstorms brought rain, hail and as many as nine tornadoes touched down in Nebraska and Iowa.
At least 15 people were injured in tornadoes while three deaths were reported in a car crash on a snowy highway.
Aftermath of hail and heavy rain in Shediac, NB, 05 August 2013 (Dame Nature/Facebook)
Severe thunderstorms rolled across Southeast New Brunswick today bringing winds, heavy rain and even hail to some areas.
In the Shediac and Pointe-du-Chene area, marble-sized hail fell for more than twenty minutes covering the ground in white.
Heavy downpours also caused minor, localized flooding in the region.
Environment Canada says the unsettled weather is expected to end around midnight.