Resource Centre- Long Descriptions

1. This table summarizes the typical early summer midday UV values for locations across North America.

2. This table provides links to UV forecasts from various countries around the world.

3. Image 1 – this bar graphs reports the yearly number of cloud-to-ground lightning flashes in Canada from 1999 to 2009. Plot points for this graph are listed in the table below.

Yearly number of cloud-to-ground lightning flashes in Canada from 1999 to 2008
YearMillions of Flashes
19992.6
20002.5
20012.45
20022.4
20032.1
20042.0
20052.95
20062.4
20072.75
20082.5

4. Image 2 - this bar graphs reports the average monthly of cloud-to-ground lightning flashes in Canada from 1999 to 2009. Plot points for this graph are listed in the table below.

Average monthly of cloud-to-ground lightning flashes in Canada from 1999 to 2009
MonthNumber of Flashes
JanuaryLess than 10, 000
FebruaryLess than 10, 000
MarchLess than 10, 000
April20,000
May110,000
June500,000
July920,000
August600,000
September160,000
October25,000
NovemberLess than 10,000
DecemberLess than 10,000

5. Image Description - A sample forecast page on the Canada.ca/weather website showing where the UV forecast information is located. The red arrows indicate the UV forecast can always be found in “Today’s Forecast” section.

6. Image Description - Screen shot of the Forecast Quick Link navigation toolbar used on the Canada.ca/weather web site. This toolbar provides quick access to all weather forecast location pages.

7. Image Description - Dangers of Lightning.

Dangers of Lightning
SourcePercentage
Blunt TramaLow
Ground Current40% to 50%
Side Flash20% to 30%
Contact15% to 25%
Upward Leaders10% to 15%
Direct Strike3% to 5%
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