Red Flag Warning, fire conditions Nevada, Arizona areas

MESQUITE – The National Weather Service has issued a “Red Flag Warning” in effect from 10 a.m. PDT/MST to 8 p.m. PDT/MST Sunday for strong winds and low relative humidity Clark and southwest Lincoln county deserts in Nevada and northern Mohave County, Arizona. A “Red Flag Warning” means critical fire conditions are either occurring or imminent.

Affected areas – In Arizona, Fire Weather Zone 101 Lake Mead National Recreation Area/Colorado River-Arizona side. In California, Fire Weather Zone 229 Lower Colorado River Valley. In Nevada, Fire Weather Zone 465 Clark And southwest Lincoln County Deserts/Las Vegas Dispatch and Fire Weather Zone 466 Lake Mead NRA/Colorado River-Nevada Side.

Dots denote areas subject to National Weather Service "Red Flag Warning" for critical fire conditions forecast for May 11, 2014, Nevada and Arizona, Map issued May 10, 2014, 6:10 a.m. | Image courtesy of National Weather Service, St. George News
Dots denote areas subject to National Weather Service “Red Flag Warning” for critical fire conditions forecast for May 11, 2014, Nevada and Arizona, Map issued May 10, 2014, 6:10 a.m. | Image courtesy of National Weather Service, St. George News | Click on image to enlarge

• Timing – Strong north winds are expected all day Sunday but relative humidity will likely not drop below 15 percent until late morning. Humidity will rise while winds decrease Sunday evening.

• Wind – Strong north winds are forecast to develop behind a cold front Saturday night and Sunday, north 15-30 mph with gusts around 40 mph.

• Humidity – Low relative humidity is expected with any precipitation associated with the cold front remaining north and east; minimum relative humidity 10-15 percent except 5-10 percent at lower elevations along the river.

• Impacts – The combination of gusty winds, low relative humidity and dry fuels can create conditions that are favorable for extreme fire behavior.

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