Temperatures on the rise again across southern Quebec

A vehicle drives along a partially flooded coastal road Monday at Alligator Point, Florida. Tropical Storm Fred made landfall over the region Monday afternoon, with storm surge and fresh water flooding as well as isolated tornadoes. The storm was weakening south of Atlanta on Tuesday afternoon. Heavy rain is still forecast from the southeastern US into New York State. (Tori Lynn Schneider/Tallahassee Democrat)

While we may be past the peak of the summer season, the warm weather is not showing any signs of leaving just yet. After a less humid, pleasant weekend, temperatures and humidity are on the rise again. High pressure anchored off the southeast US coast is expected to pump warm, moist air northward over the next week or so. Helping in the northward trajectory of the tropical airmass, will be the remains of Fred.

Tropical Storm Fred moved inland along the Florida Gulf Coast near Cape San Blas late Monday afternoon. The storm dumped copious amounts of rain over portions of the Florida panhandle and southern Georgia, along with isolated tornadoes. Widespread flood watches and warnings are currently in effect from Georgia to New York state. As of Tuesday afternoon, Fred has been downgraded to a depression with 45km/h winds. The broad center was located 48km southwest of Atlanta. 

As this time it appears the bulk of the rainfall will remain south of Montreal. What we can expect is an increase in heat and humidity along with some scattered showers or thunderstorms through the weekend. High temperatures will once again approach 30C (86F), with overnight lows in the high teens and low 20s.

Despite all the humid weather we have experienced this August, most of the rain has avoided the metro region. To date, Montreal has received only 17.8mm of rain at Trudeau Airport on only four days in August. Hopefully some of the upcoming tropical moisture will find its way into our lakes and streams which are running exceptionally low.

The rain from Tropical Storm Fred will remain south of Montreal through Wednesday. (NOAA)

Tropical Storm Grace

Two more tropical systems have developed this week, Grace and Henri. Grace was located 40 km east of Montego Bay, Jamaica midday Tuesday. The storm dumped heavy rain across earthquake ravaged Haiti over the last 24 hours, with as much as 250mm falling. Flash flooding and landslides are possible across Haiti and the Dominican Republic as well as portions of southern Cuba. 

Grace is expected to intensify and become a hurricane within the next 24 hours as the center moves just south of The Caymen Islands. The storm will then take aim at the popular beach and resorts towns of the Yucatan Peninsula in Mexico. 

Meanwhile Henri was located 215km south, southeast of Bermuda, with 95km/h winds, and no threat to land at this time.