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.

First snow of the season

Snow
A low pressure system moving through the Maritimes brought the first snow of the season to Southeast New Brunswick today.

A cold rain eventually turned to snow in Greater Moncton and 7.2 cm fell with Environment Canada calling for up to 10 cm tomorrow.

As the above chart shows, the first measurable snow in the region is typically recorded from late October to late November.

Tire shops have reportedly been busy this week as drivers scramble to get their snow tires installed.

More rain & wind for Maritimes

Few leaves remain on trees after strong winds, Irishtown Nature Park, 25 Oct 2019 (Dearing)

Another low pressure system moved through the Maritimes on Wednesday bringing a lot of rain to the region especially to western New Brunswick.

Winds were also a factor with this storm but for a shorter period of time even though the peak gust was 81 km/h which was slightly higher than last week.

Here some rainfall totals (mm):

  • Saint John  59
  • Edmundston  59
  • Bathurst  49
  • Fredericton  48
  • Miramichi  37
  • Sydney  30
  • Charlottetown  22
  • Halifax Stanfield Airport  21
  • Greater Moncton  19

(Data courtesy Environment Canada)

Fast and furious storm

A tree topples over in Halifax, NS, 17 Oct 2019 (Nova Scotia Power/Twitter)

A so-called bomb cyclone with wind and rain moved through the Maritimes in just a few hours today.

The intense low pressure system brought winds gusting up to 89 km/h in Saint John which uprooted some trees already weakened by Hurricane Dorian last month.

Greater Moncton recorded a peak gust of 78 km/h along with 20 mm of rain which caused some localized flooding as leaves clogged storm drains.

The winds were even stronger in Nova Scotia with a gust of 101 km/h at Halifax harbour and 106 km/h in Lunenburg which brought trees down knocking out power.

The highest gust was near Cheticamp on Cape Breton Island at 148 km/h.

Rainfall amounts across New Brunswick and Prince Edward Island ranged from 15 to 30 mm with more than double those amounts in Nova Scotia.

Strong fall storm coming

An intense low pressure system is heading to the Maritimes.

Heavy rain will start during the morning hours in Greater Moncton and strong winds will develop by midday.

Environment Canada says rainfall amounts could reach 50 mm while easterly wind gusts of 70 km/h or higher are likely.

Some trees may be at risk of falling after being weakened by Hurricane Dorian last month.

Many leaves will undoubtedly drop which could plug storm drains causing localized flooding.

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.

Scattered frost!

Geranium with light frost damage in NE Moncton, 19 Sept 2019 (Dearing)

It was a cold morning in the Maritimes and frost advisories were posted for all three provinces.

Scattered frost was recorded in many areas including Greater Moncton where the thermometer fell to -0.4°C at the airport which is close to the 2008 record low of -1.2°C.

However, a minimum of -4.4°C was set in the area in 1945.

This was a light frost and much earlier than the average date of 04 October.

New record lows for 19 September:

Grand Manan
New record  -2.1°C
Old record -1.6°C set in 2008
Records in this area have been kept since 1883

Saint John Airport
New record -0.7°C
Old record -0.5°C set in 2009
Records in this area have been kept since 1871

Port Hawkesbury, NS
New record 0.3°C
Old record 2.0°C set in 1994
Records in this area have been kept since 1875

Summerside, PEI
New record 0.6°C
Old record 2.1°C set in 2014
Records in this area have been kept since 1898

(Data courtesy Environment Canada)

Fall preview for Atlantic Canada

After what seemed like a short summer – it didn’t get started until early July in Southeast New Brunswick – The Weather Network has unveiled its 2019 fall forecast.

  • Much of Atlantic Canada should see above-average rainfall due to a few systems that tap into tropical moisture and bring excessive totals.
  • Above normal temperatures are expected to dominate across the southern Maritimes, while typical fall temperatures are expected elsewhere.

TWN Fall

Dorian packs powerful punch

Dorian damage in Halifax’s West End, 08 Sept 2019 (NS Power)

Hurricane Dorian has left a path of destruction across the Maritime Provinces despite being downgraded as it crossed the region.

The Canadian Hurricane Centre says Dorian was an intense post-tropical storm as it made landfall at 7:15pm ADT Saturday in Sambro, 25 km southwest of Halifax.

Dorian brought destructive winds, flooding rains and powerful storm surges to much of Nova Scotia, southern New Brunswick and Prince Edward Island.

A construction crane collapsed and century old trees toppled onto homes, businesses, vehicles and streets in Halifax.

Public works staff are scrambling to clean up the mess and power crews are trying to restore electricity to the tens of thousands without it.

img_0660

Crews clean up storm damage in Halifax’s west end, 08 Sept 2019 (NS Power)

Rainfall totals (mm) as of 11am ADT Sunday:

  • Oxford, NS. 138
  • Halifax (Lower Sackville), NS. 138
  • Greater Moncton Airport, NB. 121
  • Miramichi, NB. 115
  • Kentville, NS. 110
  • Summerside, PEI. 90
  • Saint John, NB. 82
  • Fredericton, NB. 75

Peak wind gusts (km/h) as of 11am ADT Sunday:

  • Beaver Island (eastern shore), NS. 145
  • Yarmouth, NS. 130
  • North Cape, PEI. 122
  • Halifax (city), NS. 120
  • Miscou Island, NB. 106
  • Sydney, NS. 104
  • Saint John, NB. 102
  • Greater Moncton Airport, NB. 100

(Data courtesy Environment Canada)

Hurricane Dorian landfall expected near Halifax

Dorian update

Emergency measures organizations in the Maritimes have been preparing for Hurricane Dorian which is approaching southwestern Nova Scotia with maximum winds of 148 km/h (as of 12pm ADT).

The Canadian Hurricane Centre expects Dorian will make landfall near Halifax on Saturday evening as a Category 1 hurricane.

Residents who live along the Atlantic coast, such as Peggys Cove for example, are being urged to evacuate and move inland.

Long lines were reported at stores and gas stations on Friday as residents scrambled to stock up on food and other supplies.

Hurricane warnings and tropical storm warnings have been issued for all of Nova Scotia including Cape Breton Island, Prince Edward Island and southeast New Brunswick.

Strong winds gusting up to 120 km/h are in the forecast, rainfall amounts could exceed 100 mm and large waves and storm surges are likely along coastlines.

As of 2pm ADT, about 75,000 customers were without electricity in Nova Scotia with some trees toppled over along the province’s south shore.

Greater Moncton and Southeast New Brunswick (warnings as of 2pm ADT)

  • Tropical Storm Warning – heavy rain, strong winds, storm surges along the coast
  • Wind Warning – gusts up to 90 km/h which could cause damage, uproot trees
  • Rainfall Warning – 50 to 100 mm rain (a month’s worth) could cause flooding