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
Russia puts Ukrainian President Zelenskyy on its wanted list
Russia has put Ukrainian President Volodymyr Zelenskyy on its wanted list, Russian state media reported Saturday, citing the interior ministry’s database.
No proof man lied to brother about number of kittens born in litter, B.C. tribunal rules
A man was denied a $5,000 payout from his brother after a B.C. tribunal dismissed his claim disputing how many kittens were born in a litter.
A Chinese driver is praised for helping reduce casualties in a highway collapse that killed 48
A Chinese truck driver was praised in local media Saturday for parking his vehicle across a highway and preventing more cars from tumbling down a slope after a section of the road in the country's mountainous south collapsed and killed at least 48 people.
'I just can't believe that it took so long': Body found in wreckage 3 months after deadly fire
A man accused of arson in a January Old Strathcona apartment fire is expected to be charged with manslaughter after a body was discovered in the burned building late last month.
Two killed after collision with truck on Hwy. 417 near Limoges, Ont.
Ontario Provincial Police say two people were killed after a car and a transport truck collided in the westbound lanes of Highway 417 near Limoges, Ont. on Tuesday afternoon.
Quebec man who threatened Trudeau, Legault online sentenced to 20 months in jail
A Quebec man who pleaded guilty to threatening Prime Minister Justin Trudeau and Premier François Legault has been sentenced to 20 months in jail.
A candidate for Germany's key party was beaten up while campaigning for European elections
A candidate for Chancellor Olaf Scholz's center-left party in next month's election for the European Parliament was beaten up and seriously injured while campaigning in an eastern city, the party said Saturday.
Explosion at train station leads to discovery of stolen car on Montreal's South Shore: police
Police are investigating after a BMW exploded in the St-Lambert Exo train station parking lot on Montreal's South Shore.
The pros and cons of discussing mental health issues in the workplace
A group of lawyers has written what they call a groundbreaking book about how mental health is perceived in the legal profession.