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 | Black Butte Crater Lava Field | Black Rock Desert | Buzzard Creek | Carrizozo | Craters of the Moon | Diamond Craters | Dotsero | Fort Selkirk | Haleakala | Hell's Half Acre | Hualalai | Imuruk Lake | Ingakslugwat Hills | Jordan Craters | Kilauea | Markagunt Plateau | Mauna Kea | Mauna Loa | Nazko | Red Hill | San Francisco Volcanic Field | St. Michael | St. Paul Island | Uinkaret Field | Wapi Lava Field | Wells Gray-Clearwater | Yellowstone | Zuni-Bandera | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||