U.S. Wildfire Causes, 1980-2016

Jill Hubley has mapped the causes of wildfires in the United States from 1980 to 2016, based on Federal Wildland Fire Occurrence Data. The map toggles between main causes (human and natural) and specific cause; there’s also a chart ranking the causes.

The highest and lowest ranked causes are highlighted when the chart loads. These represent the cumulative ranking across all years. Lightning, a natural cause, often floats to the top, but that’s only because on the human side, the vote is split between more than twenty options. Lightning doesn’t predominate in all states, though. In Alabama, the number one cause is pyromania. In Indiana, it’s brakeshoes. In Minnesota, it’s field burning. There are a couple of overall trends, too. Smoking is going down as a cause, and powerlines are going up.

[CityLab/Benjamin Hennig]

How to Build a Fire Map

Last October Robin Kraft posted an online map of the northern California wildfires showing satellite imagery from before and after the fires (see previous entry); today he’s posted a blog entry explaining how he built it, in great technical detail. The timing is not accidental: “There is another fire raging in Los Angeles right now — if DigitalGlobe and Planet release their data, you can use this guide to make your own map.”

California Wildfires: Mapping Sonoma County

Sonoma County’s wildfire information page points to a number of useful maps: fire perimeter boundary maps, current evacuation areas, road closures, rapid evaluation safety assessment (RESA) maps. The City of Santa Rosa’s emergency information page also has maps specific to that city; Heavy also has a roundup. See also Cal Fire’s structural status information map. [The Mercury News]

Previously: Mapping the Northern California Wildfires.

Mapping the Northern California Wildfires

NASA Earth Observatory
NASA Earth Observatory

Maps and satellite imagery of the wildfires in Northern California include the San Francisco Chronicle’s interactive map; Robin Kraft’s interactive map  showing satellite imagery from before and after the fire; this New York Times page mapping building damage in Santa Rosa; the Washington Post’s coverage of the devastation; and NASA Earth Observatory’s images of the smoke plumes here and here.

Where Disaster Strikes

Where Disaster Strikes: Modern Space and the Visualization of Destruction, an exhibition of disaster maps, is taking place now until 19 April at Harvard’s Pusey Library.

Floods, fires, earthquakes, volcanoes, bombings, droughts, and even alien invasions: disaster can take many forms. And, although disasters are always felt dramatically, a disaster’s form and location impacts who records its effects and what forms those records take. “Where Disaster Strikes” investigates the intertwined categories of modern space and disaster through the Harvard Map Collection’s maps of large destructive events from the London Fire to the present.

Open to the public. The exhibition also has a substantial online presence.

Smoke and Smog

Sediment, Smoke, and Stained Ice in Quebec

Forest fires near Eastmain, Quebec had a dramatic impact on air quality around here last week; I woke up hacking and wondering why. (Air filters to maximum!) The above photo, taken by the MODIS sensor aboard NASA’s Aqua satellite on June 28, gives some idea of the situation on the eastern shores of James Bay. (The photo also shows a brown-stained James Bay, the result of tannin-stained water from bogs spilling into the bay in spring.) Image credit: NASA Earth Observatory.