Kalin's Call: Frosty October morning sets record lows in the Maritimes
A number of weather stations recorded record-low temperatures in the Maritimes on Monday.
New Brunswick
Bathurst Airport: -1.8 C
Edmundston: -6.1 C
Kouchibouguac: -2.5 C
Saint John Airport: -2.1 C
St. Stephen: -3.3 C
Nova Scotia
Bedford Range: -1.2 C
Halifax International Airport: 0.4 C
Halifax Windsor Park: 3.3 C
Malay Falls: -0.9 C
P.E.I.
Charlottetown Airport: -0.9 C
Several other sites in the region came close to matching record lows. In general, morning temperatures were several degrees below early October averages, which range from about 2 to 6 degrees Celsius. Patchy frost and even some ice was spotted around the region to start the day.
Recorded low temperatures were reported on Oct. 3, 2022. Some of the sites set new record lows for the date.
The combination of being on the eastern side of a high-pressure system set us up for the fall frost. The atmosphere circulates clockwise around high-pressure systems in the northern hemisphere. That circulation brought a northerly wind to the Maritimes that tapped into colder air in place in northern Quebec and Labrador. Additionally, the high pressure kept the night sky clear and the wind light, allowing for more radiational cooling (loss of heat due to emission of longwave radiation from the Earth’s surface).
High pressure has brought a chillier northerly flow of air, clear sky, and light wind -- a perfect recipe for frost.
Given it’s a very similar weather pattern for Monday night, expect another chilly, even frosty, start to the day Tuesday.
Frost advisories remain in effect for large parts of the Maritimes for Monday night. Note that frost advisories are only issued during determined “growing seasons,” and since northern New Brunswick is past that part of the season, no advisories are in effect there despite the fact that there will almost assuredly be some frost development Monday night. Frost advisories will no longer be issued for other parts of the Maritimes after October 15.
Another chilly early October night is ahead with more frost advisories issued.
The average first frost in the Maritimes ranges from early September in northwestern New Brunswick to late September/early October for much of the rest of the region.
Some coastal areas of Nova Scotia and eastern P.E.I. sometimes don’t see frost until mid-October. A turn to southerly winds will bring the overnight low temperatures up after Tuesday. That will last until Saturday night, when a northwest wind takes back over following the passage of a cold front on Saturday.
A general map on when parts of the region typically experience a first fall frost. Some areas, like the Cape Breton Highlands, lack data.
CTVNews.ca Top Stories
For the first time in report's history, Canada's air quality worse than U.S.
Air quality in Canada is now worse than in the U.S., according to the 6th Annual World Air Quality Report. Of the 15 most polluted cities in the two countries, 14 were in Canada.
A newspaper says video of Prince William and Kate should halt royal rumour mill. That's a tall order
Prince William and his wife Catherine have been filmed at a farm shop near their Windsor home, The Sun newspaper reported -- the first footage of Kate since she had abdominal surgery for an unspecified condition two months ago.
WATCH LIVE As former prime minister Mulroney lies in state, public tributes in Ottawa begin
Members of the public who wish to pay tribute to Brian Mulroney can visit his casket in Ottawa starting this afternoon.
BREAKING Roy McMurtry, former Ontario attorney general, dies at 91
CTV News has confirmed that former Ontario attorney general Roy McMurtry has died.
Hertz CEO out following electric car 'horror show'
The company, which announced in January it was selling 20,000 of the electric vehicles in its fleet, or about a third of the EVs it owned, is now replacing the CEO who helped build up that fleet, giving it the company’s fifth boss in just four years.
'You ask for your money, they disappear': Ontario man loses $17K to AI crypto scam
A Toronto man is spreading the word of a cryptocurrency scam that lures victims using AI-generated news sites after he lost $17,000 in investments.
Images taken deep inside melted Fukushima reactor show damage, but leave many questions unanswered
Images taken by miniature drones from deep inside a badly damaged reactor at the Fukushima nuclear plant show displaced control equipment and misshapen materials but leave many questions unanswered, underscoring the daunting task of decommissioning the plant.
DEVELOPING February inflation rate slows to 2.8% as price growth unexpectedly eases
Canada's annual inflation rate unexpectedly fell to 2.8 per cent last month, amid sharp declines in cellular and internet services as well as slower grocery price growth.
High thoughts: The habits of Canadian cannabis users are revealed in a new StatCan report
Statistics Canada has conducted a series of surveys to measure the impacts of legalized cannabis since the Cannabis Act took effect in 2018. The latest one, the 2023 National Cannabis Survey, sheds light on users' preferences and habits last year.