Records to watch as temperatures soar in the Maritimes Wednesday
Records fall
As we moved into the late afternoon, high temperature records for a June 19 fell across all three Maritime provinces.
Many other weather observation sites in the region came within a degree or less of their standing record highs.
As of 5 p.m. ADT Bathurst, N.B., has had the hottest temperature in the country as recorded at Environment Canada-monitored weather stations. That high temperature recorded as 37.6 degrees Celsius.
New daily high temperature records set in the Maritimes. Unofficial at this time but some of the sites that set new records are shown here highlighted in yellow. (Source: CTV Atlantic)
Peak heat and humidity
The Maritimes is now into the peak of the spell of hot and humid weather. Similar conditions are expected on Thursday. Heat warnings remain in effect for all three Maritime provinces as not only will the days be very hot, but the nights will be very warm, offering little relief.
A cold front moves across the Maritimes late Thursday into early Friday. Less humid air will filter into the Maritimes on Friday. Both temperature and humidity are forecast to fall from the levels of Wednesday and Thursday. Temperature and humidity will both fall a bit more for the start of the weekend.
Afternoon humidex values in the Maritimes, or what it feels like, taking into account temperature and humidity, well into the 30s and in cases the 40s.
Risk of thunderstorms
Heat and humidity can be fuel for thunderstorms. There is a low chance of afternoon and evening thunderstorms in New Brunswick for Wednesday afternoon and evening. Any thunderstorms that do develop will be isolated and so for any given community it is about a 20-30 per cent chance.
There is a higher risk of scattered thunderstorms in the Maritimes Thursday.
The thunderstorm development on Thursday would be triggered by the cold front moving north to south across the Maritimes. The highest risk for Thursday afternoon and early evening will be in southern New Brunswick, Prince Edward Island, and eastern Nova Scotia. There will also be a Thursday evening and night risk for thunderstorms in western Nova Scotia.
Due to the heat and humidity that will have built up, it is possible some of the thunderstorms could be strong or severe. Hazards would include lightning, strong localized wind gusts, and downpours.
There will be a higher chance of thunderstorms in the Maritimes Thursday along with a higher risk that some of them could become severe.
Tropical Storm Alberto
Tropical Storm Alberto developed Wednesday morning in the Gulf of Mexico – the first named storm of the 2024 Atlantic hurricane season. The National Hurricane Center is issuing advisories and forecasts for the storm. The storm is forecast to move onshore near the border of the provinces of Tamaulipas and Veracruz, Mexico, early Thursday morning.
The storm could bring areas of rain, as much as 120 to 250 mm, to parts of northeastern Mexico and southern Texas. The rain will bring a risk of flash flooding and a risk of mudslides where it comes down in more mountainous terrain.
More pictures captured during the Maritimes' heat wave can be seen here.
The forecast cone for Tropical Storm Alberto in the Gulf of Mexico per the National Hurricane Center.
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