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Tillamook Burn

Tillamook Burn is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tillamook Burn rather than just read about it. In short: The Tillamook Burn was a series of forest fires in the Northern Oregon Coast Range of Oregon in the United States that destroyed a total area of 350,000 acres (140,000 hectares) of old growth forest in what is now known as the Tillamook State Forest. There were four wildfires in this series, which spanned the years of 1933–1958.

Tillamook Burn — main illustration
Tillamook Burn — illustration

Key takeaways

  • Tillamook Burn belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Tillamook Burn to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Tillamook Burn from memory before moving on to harder problems.

Reference excerpt

The Tillamook Burn was a series of forest fires in the Northern Oregon Coast Range of Oregon in the United States that destroyed a total area of 350,000 acres (140,000 hectares) of old growth forest in what is now known as the Tillamook State Forest. There were four wildfires in this series, which spanned the years of 1933–1958. By association, the name Tillamook Burn also refers to the location of these fires. This event is an important part of Oregon's history.

First fire (1933)

The first fire started in a ravine at the headwaters of Gales Creek on August 14, 1933. The exact cause of the first fire is unknown; however, the common narrative states that as logging crews were wrapping up operations early due to fire hazard restrictions, a steel cable dragging a fallen Douglas fir rubbed against the dry bark of a wind-fallen snag. (While the "common narrative" claims that two large trees were rubbed together, thus causing ignition, it is more likely that hot embers escaped from the firebox on the steam donkey and ignited nearby combustibles.) The snag burst into flame, and the wildfire that grew out of this burned 350,000 acres (140,000 ha) before it was extinguished by seasonal rains on September 5. An oppressive, acrid smoke filled the neighboring valleys; ashes, and cinders, and the charred needles of trees fell in the streets of Tillamook; and debris from the fire reached ships 500 miles (800 km) at sea. A Civilian Conservation Corps member was the only known human casualty of fighting the fire. The loss in processed lumber was estimated to have been $442.4 million in contemporary (1933) dollars—a serious loss not only to the timber industry at the time, but also to a nation struggling with the Great Depression. A massive salvage operation was immediately begun to harvest usable portions of the burned wilderness. The speed with which a forest fire can spread given abundant fuel under the most favorable conditions is well illustrated by this fire. From August 14 at 1 p.m. until the early morning of August 24 the fire had burned about 40,320 acres (16,320 ha) and it appeared that it might be brought under control soon. Thus, for over 10 days it had burned at an average rate of about 3,840 acres (1,550 ha) a day. On August 24, the humidity dropped rapidly to 26 percent and hot gale-force winds from the east sprang up. During the next 20 hours of August 24 and 25 the fire burned over an additional 268,800 acres (108,800 ha), or at a rate of 13,440 acres (5,440 ha) per hour along a 15-mile (24 km) front. The fire was stopped only by the fact that the wind ceased and a thick, wet blanket of fog drifted in from the ocean.

Second fire (1939) The second fire was started in 1939, allegedly by another logging operation. It burned 190,000 acres (77,000 ha) before being extinguished.

Third fire (1945) A third fire started on the morning of July 9, 1945, near the Salmonberry River, and was joined two days later by a second blaze on the Wilson River, started by a discarded cigarette. This fire burned 180,000 acres (73,000 ha) before it was put out. The cause of the blaze on the Salmonberry River was mysterious, and many believed it had been set by an incendiary balloon launched by the Japanese (due to the fire occurring in the waning days of World War II), which had been carried to Oregon by the jet stream. The third fire was perhaps the best known, after the initial wildfire, because it affected much of the forested mountains along the popular highways between Portland and the recreational destinations of the ocean beaches. This devastation remained visible to any traveler through the area as late as the mid-1970s.

Fourth fire (1951) The last fire started in 1951, and burned only 32,000 acres (13,000 ha).

Salvage operations Immediately after the first fire, new logging camps formed and existing ones expanded operations. At the time, access to the forest was limited and the railroad lines did not yet extend into the inner reaches of the forest. The town of Timber expanded during the time and became a prominent logging town along with the smaller town of Cochran to the west. Some of the logging companies near Glenwood joined their operations to form the Consolidated Timber Company. The lumber from these operations played an important part in providing wood resources to the United States during World War II. Throughout the subsequent years, miles of roads and railroad lines and were built through the forest to the various logging camps providing enhanced access. This made it easier for forestry restoration, maintenance, and fire prevention operations allowing them to eventually get a handle on the continued series of burns, though it also created new issues with erosion in a terrain known for landslides.

Restoration The repeated fires led some to think that large wildfires in the area were inevitable and that the land was now too damaged from the intense heat to ever again sustain forests. But determined efforts by Oregonians—private citizens, government officials, land owners and many others—resulted in efforts to restore The Burn, beginning with hearings during World War II under Judge H. D. Kerkman of Washington County and eventually resulting in a decades-long reforestation program. Much of the lands of the Tillamook burn had come to be owned by the counties of Tillamook, Yamhill, and Washington through foreclosures on unpaid property taxes; at the time of the forest fires, most of the land was owned by timber companies, which also paid the cost of fighting the fires. A measure was submitted by the Legislative Assembly to the voters to float a bond to finance reforestation, which narrowly passed in 1948. In a book published that same year, Stewart Holbrook wrote about the Tillamook Burn in Northwest Corner: Oregon and Washington:

… excerpt ends here. Continue reading the full article.

Illustrations

Tillamook Burn: Aerial view of one of the fires in August 1933
Aerial view of one of the fires in August 1933
Tillamook Burn: The Tillamook burn photographed in 1941
The Tillamook burn photographed in 1941

Worked examples

Example 1 — a first encounter with Tillamook Burn

Start with the simplest possible case. Write down what Tillamook Burn claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tillamook Burn before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tillamook Burn ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tillamook Burn

In research
Tillamook Burn appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Tillamook Burn in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Tillamook Burn is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1930s wildfires, 1933 fires in the United States, 1933 in Oregon, so understanding it makes those chapters shorter.
In everyday life
Look for Tillamook Burn outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Tillamook Burn in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Tillamook Burn means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Tillamook Burn out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tillamook Burn in simple terms?

The Tillamook Burn was a series of forest fires in the Northern Oregon Coast Range of Oregon in the United States that destroyed a total area of 350,000 acres (140,000 hectares) of old growth forest in what is now known as the Tillamook State Forest. There were four wildfires in this series, which…

Why does Tillamook Burn matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tillamook Burn?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tillamook Burn.

Tags

  • 1930s wildfires
  • 1933 fires in the United States
  • 1933 in Oregon
  • 1933 natural disasters in the United States
  • 1939 fires in the United States
  • 1939 in Oregon
  • 1939 natural disasters in the United States
  • 1940s wildfires
  • 1945 fires in the United States
  • 1945 in Oregon
  • 1945 natural disasters in the United States
  • 1950s wildfires

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