Alaska

Hawaii

British Columbia

Nevada

California

None

A world map of earthquake activity from 2000 to 2019. Circles of varying sizes represent earthquake magnitudes, with larger circles for higher magnitudes. Significant activity is noted in Colombia, Iran, Turkey, Tanzania, and the North Atlantic Ocean.

Time series data showing locations and Richter scale magnitudes of significant earthquakes from 1800 BCE to 2019. Use timeline controls at bottom of the map to display data by time period.

Earthquakes

World

NOAA

Richter scale magnitude

Arizona

Utah

District of Columbia

Florida

Nunavut

Virginia

Mississippi

Texas

Louisiana

North Carolina

Alabama

New Mexico

South Carolina

Colorado

Georgia

Maryland

Québec

Tennessee

Arkansas

A map shows the ethnic and cultural regions in U S. French-Canadian (orange) in Quebec, Black belt (blue) in the southeastern states. Hispanic borderlands (mustard) in south states. Navajo Reservation (yellow) in Arizona, and Nunavut shaded grey.

Distinctive contemporary cultural regions of North America

Ethnic and Cultural Regions

North America

nature

Yukon

Northwest Territories

Idaho

New Hampshire

Rhode Island

Vermont

Washington

Wyoming

Montana

Maine

North Dakota

Kentucky

Nova Scotia

Delaware

Prince Edward Island

Saskatchewan

West Virginia

Nebraska

Missouri

Oregon

New Brunswick

Kansas

Wisconsin

Newfoundland and Labrador

New Jersey

Michigan

Alberta

Connecticut

Pennsylvania

Massachusetts

New York

Manitoba

Oklahoma

Ontario

South Dakota

Ohio

Indiana

Minnesota

Iowa

Illinois

A map shows areas of insolation (incoming solar radiation) across the world, categorized by watts per square meter.

Average annual levels of solar radiation reaching the Earth's surface

Insolation

The map illustrates global insolation, showing variations in incoming solar radiation from the tropics to the polar regions. In the Northern Hemisphere, high insolation (220 to 280 plus watts per square meter), highlighted as dark green to dark red spans from northwestern Mexico through southern Texas, Florida, and the Caribbean, across the Atlantic to North Africa and Southwest Asia, with peaks in the eastern Sahara and Arabian Peninsula. In the Southern Hemisphere, high insolation areas stretch from East Africa to South Africa and across the Indian Ocean to most of Australia, with other high insolation zones in the Central Pacific and south-central South America. Middle insolation values (120 to 219 watts per square meter), highlighted as light blue to green, are found between 50 degrees north and 50 degrees south latitude, excluding high insolation regions. Low insolation areas (80 to 119 watts per square meter), highlighted as blue to light blue, are located north of the 50-degree lines to the poles in North America, the North Atlantic, and Eurasia, and around the Southern Ocean in Antarctica. The lowest insolation values (less than 80 watts per square meter), highlighted as dark blue, are in the ocean east of northern Greenland.

Display by:	Earthquakes									Ethnic and Cultural Regions							Insolation
	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Acadiana	Black Belt	Cuban South Florida	French-Canadian Quebec	Hispanic borderlands	Navajo Reservation	Nunavut	240–259	220–239	200–219	180–199	160–179	140–159	120–139	100–119	80–99	Less than 80
Alaska		1																						28.4%	69.2%	2.23%
Arizona														48.4%	14.0%		44.2%	33.7%	22.1%
Utah															1.23%				70.0%	8.89%	2.63%
Yukon																								100%
Northwest Territories																							2.63%	82.4%	14.9%
District of Columbia											100%										100%
Florida												3.77%						32.7%	67.3%
Idaho																					78.1%	21.9%
New Hampshire																						100%
Rhode Island																						100%
Vermont																						100%
Washington																					1.22%	98.8%
Wyoming																				12.4%	87.6%
Nunavut																98.3%							1.36%	33.1%	65.5%
Montana																					14.7%	85.3%
Maine																						99.8%	0.153%
North Dakota																						100%
Kentucky																				46.4%	53.6%
Nova Scotia																						52.4%	47.6%
Virginia											29.1%									2.49%	97.5%
Delaware																					100%
Prince Edward Island																							100%
Saskatchewan																						42.7%	57.2%
Mississippi											63.6%								82.1%	17.9%
West Virginia																					99.2%	0.827%
Nebraska																				9.53%	90.5%
Texas														56.1%			5.26%	58.9%	35.9%
Missouri																				66.4%	33.6%
Louisiana										20.6%	48.2%							26.8%	73.2%
Hawaii																		2.67%	97.3%
North Carolina											54.7%									73.0%	27.0%
Oregon																					96.3%	3.75%
New Brunswick																						47.2%	52.8%
Alabama											48.6%								66.2%	33.8%
New Mexico														89.9%	3.98%		15.5%	33.9%	49.1%
Kansas																			5.90%	91.6%	2.46%
Wisconsin																						100%
British Columbia																						21.7%	31.5%	46.8%
Newfoundland and Labrador																							29.5%	69.1%	1.36%
New Jersey																					51.6%	48.4%
South Carolina											70.7%									100%
Michigan																						100%
Alberta																						29.7%	53.1%	17.2%
Connecticut																						100%
Pennsylvania																					19.4%	80.6%
Colorado														17.0%					48.1%	51.6%	0.332%
Nevada	1																	1.58%	63.4%	31.2%	3.86%
Massachusetts																				0.220%		99.8%
Georgia											62.2%								48.3%	51.7%
New York																						100%
Maryland											16.4%										100%
Québec													99.6%									10.4%	38.5%	41.0%	10.1%
Manitoba																						26.0%	66.7%	7.35%
Oklahoma																			82.2%	17.8%
Tennessee											2.75%									100%
Ontario																						30.4%	56.0%	13.7%
California	1													49.1%			2.69%	22.7%	49.4%	19.9%	5.25%
Arkansas											20.3%								50.1%	49.9%
South Dakota																					50.1%	49.9%
Ohio																					51.6%	48.4%
Indiana																				0.561%	79.2%	20.2%
Minnesota																						99.9%
Iowa																					77.7%	22.3%
Illinois																				11.8%	73.8%	14.4%

MapMaster 3

Earthquakes