Sharp drop in temperature!

Temperature contrast 8pm, 12 Nov 2019 (earth nullschool.net)

Snow began falling in Southeast New Brunswick Monday night and later changed to freezing rain and then rain by Tuesday afternoon.

The temperature climbed to a balmy 14°C in Greater Moncton and 18°C in Greenwood, Nova Scotia.

But as the low pressure system moved out of the Maritimes toward Newfoundland, winds shifted to the northwest causing the thermometer to drop rapidly Tuesday night with a return to snow when it fell to freezing again.

Overnight low records could be challenged in the region by early Thursday as cold Arctic air takes hold.

Early snow for southern Ontario & Quebec

A snowy Gore Park, Hamilton, ON, 11 Nov 2019 (City of Hamilton)

An early winter storm tracked south of the Great Lakes on Monday and brought snow to Southern Ontario and Southern Quebec.

Snowfall amounts generally ranged between 10 and 30 cm.

Environment Canada says Toronto marked its earliest major snowfall on record with about 15 cm.

Arctic air has filtered in behind the storm prompting the city to issue an extreme cold weather alert with a possible overnight low of -15°C.

Snowfall amounts (cm), Tuesday 5pm EST:

  • Montreal 20
  • Quebec City 20
  • Windsor 19
  • Hamilton 17
  • Toronto (downtown) 15
  • Ottawa 13

Coolest day since May

Irishtown Nature Park, 05 October 2019 (Dearing)

Chilly temperatures across the Maritimes on Friday made it feel more like early November than early October.

In Greater Moncton, the daytime high for 04 October was only 8.2 C which means it was the coolest day since 22 May when the maximum was only 8.6 C.

Halifax, Charlottetown, Saint John and Fredericton also had highs below 10 C.

The normal high for the first week of October in Southeast New Brunswick is 15 C with an overnight low of 4 C.

Heat building in the Maritimes

Beach

A fine day at Aboiteau Beach, Cap-Pele, NB, 27 July 2019 (Dearing)

A heat warning has been in place since the start of the weekend in much of New Brunswick, Nova Scotia (except for Cape Breton) and Prince Edward Island.

In Greater Moncton, the temperature climbed to 30 C on Saturday and 29 C today but the forecast calls for 30 C on Monday and 31 C for Tuesday and Wednesday.

Overnight lows are not expected to drop that much either hovering around 18 to 19 C.

While humidity has been relatively low this weekend at around 50 percent or less, Environment Canada says the warm air mass will become more humid this week.

The only relief will be along the Fundy coast where temperatures will stay in the low 20s.

Historic heat in Western Europe

The jet stream has carried hot air from northern Africa across western Europe which is shattering all-time record highs in numerous countries.

The second extreme heat wave this summer has set new maximums in Belgium at 38.9 C, the Netherlands at 39.2 C and Germany at 40.5 C.

Bordeaux, France reached 41.2 C on Tuesday which was its highest temperature ever.

Thanks to the urban heat island effect, major cities are more prone to hot weather than rural areas and don’t cool down that much overnight.

On Thursday, the UK Met Office believes Britain could smash its current historic high of 38.5 C recorded in Faversham in August 2003.

Hottest weather yet?

Saint John River at Perth-Andover, NB, 16 July 2019 (Dearing)

The next heat wave across Eastern Canada could be the warmest period yet this summer with daytime highs in the low 30’s C and humidex values near 40.

Southern Ontario and Southern Quebec have been blanketed with heat warnings from Environment Canada with hot, humid days and warm nights expected this weekend.

Temperatures in the Maritimes for Saturday and Sunday could reach 30 C but a cold front will bring cooler and drier air by Monday.

A mini heat wave already brought highs of 29 C and 30 C earlier this week in Greater Moncton.

Here comes the heat!

The view from Economy Point, NS, 03 July 2019 (Dearing)

After a cool and wet start to summer, a blast of heat is heading to the Maritime Provinces over the next few days.

Environment Canada has issued heat warnings for most of New Brunswick – excluding the Fundy coast – and western Nova Scotia while other areas under a special weather statement.

A warm, humid air mass is moving into the region today raising daytime temperatures to 30°C or more.

Humidex values near 40 are expected and overnight lows may not fall below 18°C providing little relief from the heat.

Near normal values will return late Saturday as a cold front arrives.

Heat warnings are also in place for parts of Ontario and Quebec where it climbed into the low 30s yesterday.

Chilly nights!

Last Zero
The last couple of nights have been chilly across New Brunswick with overnight lows in the low single digits.

While Greater Moncton fell to 5.5°C which was a few degrees away from the record, the same minimum in Bouctouche was cold enough to set a new low.

Edmundston dipped to a nippy 1.1°C which tied its record as did Grand Manan when it dropped to 3.8°C.

Over the last six years in Greater Moncton, the chart above shows temperatures have not fallen to the freezing point or lower after early June.

May 2019 – Miserable!

Irishtown Nature Park, Moncton, 20 May 2019 (Dearing)

May 2019 proved to be the coldest May since 1974 in the Maritimes with temperatures about two or three degrees below normal.

The month started out with some warmth in Greater Moncton but it turned colder near the middle with snow recorded as late as the 21st before a slight recovery at the end.

Overnight lows were cold with six nights either at or below freezing and most minimums were in the low single digits.

Cold, damp and cloudy weather stunted growth and forced farmers to delay planting because fields were saturated.

Only three days reached or exceeded 20°C and the thermometer came nowhere near 30°C at any time of the month.

MAY 2019 ALMANAC (at Greater Moncton Int’l Airport, 1981-2010)

Average HIGH  13.4°C

Average LOW  1.8°C

AVERAGE  7.6°C (about 2.4 degrees BELOW normal)

Extreme HIGH  22.1°C (25 May)

Extreme LOW  -2.7°C (02 May)

RAINFALL  105.8 mm (about 10 percent ABOVE normal)

SNOWFALL  0.8 cm (near normal)

(Data courtesy Environment Canada)