Thunderstorm Occurrence
North AmericaPhysical EnvironmentThunderstorm occurrence in North America
NOAAThunderstorms 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).
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 | Percentage of annual change | Areas of serious concern | Areas of some concern | Stable terrain | Nonvegetated land | Atlantic Ocean Seaboard | Baja California | California | Churchill | Columbia and Northwestern United States | Fraser | Great Basin | Gulf Coast | Gulf of Mexico, North Atlantic Coast | Hudson Bay Coast | Mackenzie | Mexico, Northwest Coast | Mississippi - Missouri | North America, Colorado | Northwest Territories | Pacific and Arctic Coast | Río Grande - Bravo | Saskatchewan - Nelson | St John | St Lawrence | United States, North Atlantic Coast | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9.02% | 23.9% | 9.48% | 11.8% | 42.4% | 27.6% | 21.7% | 21.0% | 24.2% | 14.9% | 29.2% | 7.65% | 23.0% | 35.0% | 31.0% | 10.1% | 26.8% | 0.273% | 42.5% | 4.84% | 23.3% | 22.5% | 22.1% | 40.8% | 69.5% | 22.9% | 43.3% | 5.78% | 45.4% | 30.9% | 63.9% | 49.2% | 24.7% | 28.5% | 2.90% | 27.2% | 47.9% | |||||