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

Yukon

Northwest Territories

Idaho

Washington

Wyoming

Nunavut

Montana

Texas

Missouri

North Carolina

Oregon

New Brunswick

New Mexico

Michigan

Colorado

Massachusetts

New York

Québec

Manitoba

Ontario

South Dakota

A world map shows silver mining locations marked by black circles with "A g." Some key areas include the U S, Mexico, Canada, Germany, South Africa, Japan, and Australia. Major clusters are in the western countries of North and South America, and Europe.

Silver Mines

USGS

District of Columbia

Florida

New Hampshire

Rhode Island

Vermont

Maine

North Dakota

Kentucky

Virginia

Delaware

Mississippi

West Virginia

Nebraska

Louisiana

Alabama

Kansas

Wisconsin

New Jersey

South Carolina

Connecticut

Pennsylvania

Georgia

Maryland

Oklahoma

Tennessee

Arkansas

Ohio

Indiana

Minnesota

Iowa

Illinois

A map highlights the average distribution of dew point temperatures in July across North America.

Average July dew points for the contiguous United States

Average Distribution of Dew Points, July (U.S.)

The lightest shade of green represents a dew point of 20 degrees Fahrenheit, seen in parts of the western United States. The light shade of green, indicating a dew point of 30 degrees Fahrenheit, covers areas such as parts of Idaho, Wyoming, Nevada, and Utah. Moving southward, the green shade representing 40 degrees Fahrenheit is visible in regions including parts of the mostly western United States, such as Montana, Washington, Oregon, New Mexico, and Arizona. The medium green shade represents the 50 degrees Fahrenheit range and is seen in the northern Midwest, including parts of North Dakota. The darker shade of green represents higher dew points, with 55 degrees Fahrenheit covering regions like South Dakota, central parts of Wisconsin, Chicago, and New York. The green color represents 60 degrees Fahrenheit and is widespread in the central to eastern United States, covering areas like Dallas, Texas, Iowa, Illinois, Virginia, and Washington D.C. The brown color represents 65 degrees Fahrenheit and is concentrated in the southeastern United States, covering regions such as Tennessee, Georgia, and the Carolinas. The darkest shade of brown represents dew points of more than 70 degrees Fahrenheit, seen in the Gulf Coast states, including Louisiana, Mississippi, Houston, Florida, and Miami.

United States

NOAA/National Weather Service

Average Distribution of Dew Point Temperatures, July

Degrees Fahrenheit (°F)

Alberta

Newfoundland and Labrador

Nova Scotia

Prince Edward Island

Saskatchewan

Vegetable production in North America: Highest production (dark green) include California and Florida. Moderate production (light green) is in the Midwest and Southeast U.S. Lowest production regions are in Canada and the Central U.S. (light yellow).

Display by:	Earthquakes									Silver Mines	Average Distribution of Dew Point Temperatures, July								Vegetable Production
	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Earthquakes	Silver Mines	20–29°F	30–39°F	40–49°F	50–54°F	55–59°F	60–64°F	65–70°F	More than 70°F	Class	Rank	Acres
Alabama																	94.8%	3.85%		37	19,700
Alaska		1								30										58	1,020
Alberta																				21	61,700
Arizona										315		3.28%	52.5%	1.52%	4.55%	1.19%				11	145,000
Arkansas																7.28%	3.52%	1.05%		42	11,100
British Columbia										10										35	23,000
California	1									153		2.22%	24.7%	1.17%	2.39%					1	1,170,000
Colorado										430		1.05%	16.7%	24.1%						17	79,300
Connecticut															74.5%	20.0%				43	9,250
Delaware																70.5%		28.7%		29	33,600
District of Columbia																100%				63	0
Florida																	15.7%	50.5%		5	245,000
Georgia																9.84%	70.8%	17.4%		14	109,000
Hawaii																				45	8,580
Idaho										158		41.4%	1.00%							2	354,000
Illinois															1.77%	78.7%	18.0%			22	61,400
Indiana															8.52%	84.6%	5.00%			26	40,100
Iowa															3.40%	95.4%				47	7,700
Kansas														1.72%	30.3%	60.6%	7.43%			51	6,380
Kentucky																74.1%	25.9%			44	8,960
Louisiana																	31.8%	67.8%		40	12,900
Maine														1.90%	1.80%					20	62,200
Manitoba										14										19	68,800
Maryland															12.3%	72.0%		14.7%		31	29,300
Massachusetts										1				3.88%	49.9%	35.1%				38	19,000
Michigan										1				3.53%	60.8%	2.65%				8	166,000
Minnesota														16.6%	59.4%	18.8%				6	212,000
Mississippi																	72.7%	26.9%		27	36,800
Missouri										1						79.9%	3.80%			39	18,500
Montana										163		12.5%	64.6%	1.73%						41	11,800
Nebraska													1.70%	23.3%	39.4%	35.0%				34	23,300
Nevada	1									206	8.38%	55.6%	2.02%							54	3,200
New Brunswick										1										23	48,700
New Hampshire														51.0%	48.6%					52	3,700
New Jersey															35.4%	64.3%				25	47,800
New Mexico										92		1.12%	55.1%	17.6%	5.37%					32	28,000
New York										2			1.78%	9.58%	8.48%	1.26%				13	125,000
Newfoundland and Labrador																				57	1,390
North Carolina										5					1.46%	1.28%	68.8%			9	155,000
North Dakota													7.69%	68.5%	22.9%					18	79,000
Northwest Territories										2										62	8
Nova Scotia																				48	7,420
Nunavut										1										64	0
Ohio															36.5%	1.25%				28	35,300
Oklahoma														2.09%	6.06%	3.01%	9.12%			49	6,860
Ontario										76										7	170,000
Oregon										100		3.51%	53.1%	4.57%						10	154,000
Pennsylvania														4.44%	3.41%	11.0%				24	48,100
Prince Edward Island																				16	88,900
Québec										11										12	134,000
Rhode Island															40.8%	3.92%				56	2,240
Saskatchewan																				46	7,740
South Carolina																1.35%	88.9%	5.34%		30	30,300
South Dakota										5			2.29%	26.1%	60.0%	10.8%				59	830
Tennessee																3.53%	55.1%			33	27,700
Texas										3				7.25%	23.2%	29.8%	25.4%	11.4%		15	102,000
Utah										144	4.62%	12.3%	1.60%	1.99%						50	6,690
Vermont														67.8%	5.13%					53	3,450
Virginia															5.66%	52.3%	20.9%	1.66%		36	22,700
Washington										61		1.69%	1.65%	13.3%						3	326,000
West Virginia															18.6%	7.46%				55	2,650
Wisconsin														4.55%	71.2%	1.80%				4	251,000
Wyoming										4	6.20%	1.64%	53.8%	3.89%						60	617
Yukon										4										61	47

MapMaster 3

Earthquakes