Heat wave abruptly ends in N.B.

Heavy rain during thunderstorm in NE Moncton, 21 July 2017 (Dearing)


The temperature climbed to 30 C for three days in a row in Greater Moncton which is an unofficial heat wave since 32 C is the maximum by definition.

Those warm daytime highs, 30.4 C (19 July), 30.4 C (20 July) and 30.0 C (21 July), still haven’t eclipsed the season-to-date maximum of 30.8 C recorded on 11 June.

A cold front moved west to east through New Brunswick yesterday triggering scattered thunderstorms with heavy rain, gusty winds and even hail.

The heat and humidity have been replaced by a cooler, drier air mass with highs in the low 20’s C which is slightly below normal for late July.

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August 2016 – Warm and humid

Irishtown

Irishtown Park Reservoir, 28 Aug 2016 (Dearing)

A warm, dry trend which began in July continued in August in Southeast New Brunswick.

Although the temperature only climbed above 30 C once, there were 20 days with highs between 25 and 30 C often with high humidity and the overall monthly average was almost one degree above normal.

Rainfall was actually slightly above normal although a single rain event on 17 August delivered 35.4 mm which was more than one third the monthly total.

AUGUST 2016 ALMANAC (at Greater Moncton International Airport, 1981-2010)

Average HIGH 25.0 C

Average LOW 13.2 C

AVERAGE 19.1 C (about 0.9 degrees ABOVE normal)

Extreme HIGH 30.2 C (10 August)

Extreme LOW 8.9 (28 August)

RAINFALL 95.6 mm (about 15 percent ABOVE normal)

(Data courtesy Environment Canada)

Stormy air mass moves out of New Brunswick

Double rainbow over Riverview, NB, 06 August 2015 (T. Squires/Facebook)

Double rainbow over Riverview, NB, 06 August 2015 (T. Squires/Facebook)


Environment Canada says a warm, moist air mass that has been responsible for high humidity and severe thunderstorms across New Brunswick is finally moving out of the province.

The storms would often develop in the late afternoon or early evening and produce strong winds, heavy rains, brief localized flooding and even hail in some areas.

Drier and cooler air has moved into the province which is expected to bring near or slightly below temperatures to Greater Moncton with little chance of precipitation.

As you can see above, a double rainbow was spotted over Riverview last night after a brief storm.

According to Accuweather, while a primary rainbow is visible when light is reflected once off the back of a raindrop, a secondary and usually dimmer rainbow is spotted when light is reflected twice in a more complicated pattern.

Accuweather unveils Canada summer forecast

canada summer 2014 After a long, severe winter and a topsy turvy spring, many Canadians are looking forward to summer and Accuweather has unveiled its forecast for the upcoming season.

While temperatures are expected to be near normal in the Maritimes, precipitation could be slightly above normal with higher amounts of humidity.

June and July are expected to be slightly cooler thanks to a persistent dip in the jet stream and August should be warmer than usual.

Bushfire emergency declared in NSW, Australia

Charred countryside near Sydney, NSW, 21 Oct 2013 (Twitter)

Charred countryside near Sydney, NSW, 21 Oct 2013 (Twitter)

More than 60 bushfires burning in Australia’s most populous state have prompted officials to declare a state of emergency.

At least 3,000 firefighters and nearly 100 aircraft are battling the blazes in New South Wales under catastrophic conditions including high temperatures, low humidity and strong winds gusting up to 100 km/h.

Many communities have been evacuated in the Blue Mountains region, west of Sydney, where over 200 homes have been destroyed by the bushfires.

Heavy smoke has been drifting into Sydney and its suburbs since last week.

In an effort to contain the blazes and prevent them from spreading, firefighters have been lighting controlled fires.

Sizzling September heat!

Hot, humid weather made a comeback in Southern Ontario yesterday with humidex values soaring near 45 in some areas.

Environment Canada reported new heat records were set at Toronto Buttonville Airport hitting 35.0°C, Windsor at 34.6°C and Collingwood at 33.7°C.

The hotspot was Sarnia at an unseasonable 35.9°C (almost 97°F).

Some of that heat filtered into New Brunswick today – St. Stephen climbed to 28.5°C with a humidex of 37 and even Moncton reached 23°C with a humidex of 31.

Hot as an oven in Ontario

Courtesy The Weather Network, 17 July 2012

Ontario baked in temperatures which rose into the high 30’s Celsius on Tuesday – the hottest weather of the summer to date.

New records were set in a number of cities including Windsor at 37.8 C (which is 100 F!) and Toronto at 36.8 C.

The high heat and humidity prompted Environment Canada to issue a humidex advisory for most of the region and an extreme heat alert was also in place in Toronto.

Hoar frost!

Hoar frost in Moncton, 17 Feb 2012 (TWN)

For the first time I’ve noticed this winter and for the past two mornings, hoar frost has settled over Greater Moncton – a rather interesting and beautiful sight.

According to its official definition, hoar frost occurs when there is high humidity in the air and the tree limbs (or grass or even the antenna on your vehicle) have a temperature below the dew point.

The water vapor from those surfaces skips the dew process and goes directly to a frozen state.

Fog and temperatures slightly below freezing during the last couple of nights would have created high humidity and produced hoar-frost.