Weather Patterns in Ontario - EOMF...Page 14 – April-6-17 But what does this mean for Ontario?...
Transcript of Weather Patterns in Ontario - EOMF...Page 14 – April-6-17 But what does this mean for Ontario?...
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Weather Patterns in Ontario
Winter Woodlot Conference
Kemptville, Feb. 22, 2016
Peter Kimbell
Warning Preparedness Meteorologist
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www.ec.gc.ca/cc
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Climate Change Science & Research
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2010 – temperature distribution
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2011 – temperature distribution
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2012 – temperature distribution
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2013 – temperature distribution
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2014 – temperature distribution
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2015 – temperature distribution
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Temperature Trend Line since 1948
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And by season, 1948-2012
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Trends in precipitation (% change)
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Precipitation Anomaly Trend
All of Canada, 1948-2015
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But what does this mean for Ontario?
• Feb. 2015 – Record cold
• June 17, 2014 – Angus tornado
• December 2013 Ice Storm – southern Ontario
• July 8, 2013 – Toronto flood
• Oct. 25, 2012 – Wawa flash flood
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Insurance Bureau of Canada (IBC) 2015 Fact Sheet
“Property damage caused by severe weather is now the leading
cause of property insurance claims”
Insured Losses:
• 1983-2008: Average of $400 Million / year
• 2012: $1.2 Billion
• 2013: $3.4 Billion
• 2014: $1 Billion Wind – Medicine Hat (June 12)
Wind – Medicine Hat (June 12)
Hail– Lacombe (July 21) Hail– Lacombe (July 21)
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Extreme cold
• Municipalities may have Cold Weather Alert protocols to
warn the population of potentially dangerous cold
temperatures and to increase services to most vulnerable
population (e.g. homeless)
• The criteria for such alerts will be set by the municipality
and may vary from region to region
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Extreme cold
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December 2013 Ice Storm Southern Ontario
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Freezing Rain (days per year)
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But what about summer?
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Extreme heat
• Municipal public health units in Ontario have also begun to
coordinate HARS (heat alert response systems, newly
renamed HWIS – heat warning information system) with
each other and with Environment Canada
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Extreme heat
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Heavy Rainfall Events
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Heavy Rainfall – Ottawa / Toronto
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High Rainfall
“There was no detectable trend signal in
heavy rainfall events at the 5% significant
level.”
- Mekis et al, 2015, Atmosphere-Ocean
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Tornadoes
62 tornadoes/yr
reported across
Canada
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EF2 (180-220 km/h)
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EF3 (225-265 km/h)
Goderich, Aug. 21,
2011
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746 Tornadoes
1918-2012
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Tornado Days by F-scale: 1792-2012
All Tornadoes, Significant Tornadoes
IMPORTANT
Please refer to Page 14: Interpretation of Tornado Numbers over Time
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Tornado Days by F-scale: 1970-2012
All Tornadoes, Significant Tornadoes
IMPORTANT
Please refer to Page 14: Interpretation of Tornado Numbers over Time
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Canada’s Forests
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Canada in a Changing Climate – Sector
Perspectives on Impacts and Adaptations
• This 2014 report is an update of the 2008 report “From
Impacts to Adaptation: Canada in a Changing Climate”
• http://www.nrcan.gc.ca/environment/resources/publicat
ions/impacts-
adaptation/reports/assessments/2014/16309
• Chapter 3 on Natural Resources
– Forestry
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What’s in Store in the Future?
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Valued-added information over multiple time scales
Climate Outlooks
Climate Predictions
Weather Forecasts
Warnings
Days
Hours
1 week
Minutes
2 weeks
Months
Seasons
YearsForecast Uncertainty
RECOVERY RESPONSE PREPARATION
Impact-Based Decision Support
Fore
cast
Le
ad
Tim
e
NWS_041
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Ontario Storm Prediction Centre
• Responsible for Weather Program across Ontario
• Operates 24/7
• One of 7 EC Weather Centres in Canada
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Our Alert Messages
• Special Weather Statement
– Interesting, noteworthy, some possible impacts
• Advisory
– Impacts likely (frost, fog, freezing drizzle, blowing snow)
• Watch
– Potential for significant weather/impacts
• Warning
– Significant weather/impacts likely
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Our Warnings
Short-Fuse…perhaps minutes…
Longer lead time…hours to days
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Weatheradio
• Continuous broadcast of weather info
• Line of sight broadcast…trees, hills
may disrupt signal
• Standby mode Tone Alert when
Warnings issued
• Specific Area MEessaging –
SAME - Get the Warnings
for your own area
• Special frequencies…
so require a special
receiver
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EC Alert ME
• e-mail of watches / warnings / special weather
statements for your (specified) regions only.
• watch for a banner advertising this on weather.gc.ca
sometime in March (for a limited one-week trial period)
• Full, operational version later in the summer
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• Warning Tweets for all City Page locations on
weather.gc.ca, available now using assigned Twitter
address
• e.g. Kemptville is @ECAlertON74
• Google: Environment Canada Twitter Alerts for more details
• NEW (spring-summer 2017):
– Weather office will begin tweeting about actual weather
events in real-time
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Weather Ready
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WEATHER SAFETY
Shane Coulas WeatherNetwork
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Lightning Safety
• Biggest summer severe weather hazard
• Environment Canada does not issue watches or
warnings if lightning is the only threat
• First strike can occur nearby with no previous lightning
Ken Rivas – WeatherNetwork
Mississauga Aug 24 2011
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Lightning Safety Rule
• When Thunder Roars, Go Indoors
• Seek solid/best shelter immediately
• Remain in that shelter for a full 30 minutes after
the last rumble of thunder
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Lightning Safety
• Don’t stand under trees…here’s why (ground current)
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Tornado/Downburst Safety
• Best shelter…well-
constructed building in
the basement
• As many walls between
you and the outside as
possible…away from
windows
• AVOID…shopping
malls, arenas,
gymnasiums
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Dangerous Misconception
• I should open the windows in my house in advance of a
strong storm/tornado to “equalize” pressure.
WRONG...opening windows allow wind forces inside your
home...can help to lift off roof and collapse walls
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Winter Severe Weather
• Kills and injures many more Canadians than Summer
Severe Weather
– Traffic collisions
– Snow shovelling
– Slips and falls
– Hypothermia/exposure to cold
• Storms on a massive scale with large impacts
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Flash Freeze / Snowsqualls
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Winter Weather Safety
• Winter driving safety rules
• Monitor the weather forecast
• Dress in layers
• Limit time outdoors
• Get out of the wind, if possible
• Stay dry; stay active
• Watch for signs of frostbite
• Car emergency kit
• Home emergency kit (i.e. 72 Hours)
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Winter Storm Reports
• Dense fog – visibility less than 1 km
• Any occurrence of freezing rain, freezing drizzle
• Heavily accumulating snow (SNOW AMOUNTS)
– 2 or more cm/hr
• Rapid freezing of road surfaces
• Whiteout conditions in snow/blowing snow – Visibility near zero
• E-mail your reports to: [email protected]
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CANWARN Storm Spotter Training (free)
• Ottawa, May 16, 6:30 PM – Greenboro
Community Centre
• Cornwall, May 17, 6:30 PM – Cornwall Public
Library
• RSVP please to: [email protected]
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January temperature anomaly
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February temperature anomaly (so far)
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Spring forecast
![Page 58: Weather Patterns in Ontario - EOMF...Page 14 – April-6-17 But what does this mean for Ontario? •Feb. 2015 – Record cold •June 17, 2014 – Angus tornado •December 2013 Ice](https://reader036.fdocuments.in/reader036/viewer/2022071002/5fbf81cd011d90525052615e/html5/thumbnails/58.jpg)
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