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Thunderstorm Occurrence

North AmericaPhysical Environment

Thunderstorm occurrence in North America

Thunderstorms per year in North America: The highest occurrence region (light brown), includes Texas, Oklahoma, and Kansas. Western U.S.(California, Nevada), and northern Canada (Yukon, Northwest Territories), have the lowest occurrences (black).

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Thunderstorm Occurrence												Students per Teacher in Primary School			Global Mean Temperature, July											Major Industrial Centers																Beef Cows
100 and above	81–100	71–80	61–70	51–60	41–50	31–40	21–30	11–20	6–10	2–5	1 and below	Class	Rank	Value	0 to 2°C	3 to 5°C	6 to 8°C	9 to 11°C	12 to 14°C	15 to 17°C	18 to 20°C	21 to 23°C	24 to 26°C	27 to 29°C	over 30°C	Akron	Boston	Chicago	Dallas	Detroit	Hamilton	Hollywood	Kansas City	Los Angles	Ottawa	Philadelphia	Pittsburg	Quebec	San Francisco (Silicon Valley)	Sarnia	Seattle	Class	Rank	Value












9.02%	23.9%	9.48%	11.8%	42.4%	27.6%	21.7%	21.0%	24.2%	14.9%	29.2%	7.65%				14.8%	25.4%	10.6%	12.2%	37.9%	33.5%	14.5%	25.6%	56.1%	14.6%	16.4%	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1

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