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Watch Signs

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Geologists do much of their field work at the peak of fire season.  Chances are you'll only ever see a wildfire from a distance, though you should be informed about the fire risk in your field area before going out there.

 

Things to watch for

  • High fire risk as posted by the authorities.  (Campfire restrictions may be a clue.)

  • Fire weather (dry conditions/drought, hot weather, high winds, lightning, etc).

  • High fuel quantity such as thick undergrowth in a region that hasn't burned for years (adjacent photo).

  • Existing wildfires in your surrounding area.  (Get DAILY updates.)

Image -- Geologists working in a marsh with high fire fuel quantity.

© 2003 Reuben Johnson

  • Controlled burns in your area (Forest Service burns, agricultural fires, etc.).

  • Illegal burning in your area (trash, etc.).

  • Smokers on your field crew.

  • Unexplained smoke or the smell thereof.

  • Off-road driving in dry brush (see the True Story below).

Image -- Agricultural burning in sugar cane field at the jungle's edge, Belize.

© 2001 Reuben Johnson

 

Lightning Ignition Efficiency

The map displays up-to-date information on the probability of a wildfire being ignited by lightning based on various factors such as weather conditions and fuel type.

 

Lightning Efficiency

 

True Story:  On a field exercise during the summer of 2000, a graduate student and I were working a region in Wyoming bordering on a wildfire about 50 miles to the south that had been burning for several days.  We were scouting a desert area on public land which required several miles of off-road driving.

As the 4x4 slowly crawled along we noted how the smoke from the distant fire seemed especially strong that day.  Little did we realize the truck's undercarriage hade become choked with dry brush that had then been ignited by the vehicle's hot catalytic converter.

we had nothing but our hands and leather work gloves with which we pulled the burning brush from the truck and smothered it Once we discovered the fire, we had a very difficult time putting it out.  The wind was blowing at 20 to 30 mph, the truck did NOT have a fire extinguisher, the surrounding brush was very dry and just waiting to ignite, and we couldn't pour our drinking water up into the undercarriage.  In essence, we had nothing but our hands and leather work gloves with which we pulled the burning brush from the truck and smothered it.
Chance was with us on that day.  We managed to save the truck and avoid starting a major fire in spite of the miles we drove while presumably dropping embers, our unpreparedness, and the harassing weather.  Clearly, things could have easily gotten out of hand as a result of our poor outdoorsmanship and off-road driving.

 

PARENT PAGE Watch Signs Fire Behavior Surviving

 

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This site was last updated August 20, 2004

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