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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			Crude Death Rate			Cotton Production (U.S.)			Days with Heavy Fog
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	Class	Rank	Deaths per 1,000 people	Class	Rank	Metric tons	80 and over	60–79	40–59	20–39	10–19	Under 10












9.02%	23.9%	9.48%	11.8%	42.4%	27.6%	21.7%	21.0%	24.2%	14.9%	29.2%	7.65%										3.14%	5.14%	5.38%	18.2%	41.6%	24.4%

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