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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												European Monetary Union (“Euroland”)	Internally Displaced Persons			Native American Culture Areas									U.S. Presidential Election by State: Electoral Votes, 2004
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	Value	Class	Rank	People	Arctic	California	Eastern Woodlands, Northeast	Great Basin	Northwest Coast	Plains	Plateau	Southwest	Subarctic	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%					29.7%	77.4%	38.6%	49.3%	2.22%	45.8%	17.2%	40.0%	47.9%

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