Tag Archives: Crater Creek fire

Upper Yukon Zone near red flag warning, high wind gusts predicted again

Temperatures moderated in the Upper Yukon Zone yesterday. Although cloud cover allowed an increase in relative humidity to 30-40 percent, 30 mph wind gusts erased much of the RH benefit. Temperatures today will begin a trend towards the warmer range once again. There is potential today for large fire growth as the Fine Fuels Moisture […]

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Columns of smoke rise Thursday evening, July 18, 2019, from where a helicopter has dropped plastic spheres that ignite to catch a broad area black spruce on fire. The tactical firing operation is removing the fuels ahead of the Frozen Calf Fire (#367) to the northeast of Chalkyitsik. Sam Harrel/Alaska Interagency Incident Management Team

Upper Yukon Zone: High potential for fire growth today

Fire continues to exhibit extreme behavior in parts of the Upper Yukon Zone, which continues to be one of the warmest areas in the state, with relative humidity between 20-30 percent. Continued warm temperatures have dried fuels considerably. Indices that measure fuels and how receptive they are to fire remain in the high to very […]

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Chalkyitsik Fuels Build-up Index hits record high

Rainfall across Alaska continues to avoid the Upper Yukon zone, with conditions at extreme levels predicted to drive fire activity across the Yukon flats.The Buildup Index (BUI) is the best indicator of seasonal severity and overall flammability in the boreal forest here in Alaska, representing deeper drying in the duff layers and greater fuel availability. […]

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