Red Flag Warning

...WIDESPREAD BREEZY WESTERLY WINDS AND LOW RELATIVE HUMIDITY TODAY...

...HIGH-BASED SHOWERS AND THUNDERSTORMS THIS AFTERNOON FOR THE NORTHERN BLUE MOUNTAINS...

.An approaching low-pressure system will bring widespread breezy westerly winds through the Cascade gaps, across the Columbia Basin, and into portions of the Blue Mountains today. Coupled with low relative humidity, this will lead to critical fire weather conditions. Moreover, high-based showers and thunderstorms are forecast, with the best chances of abundant lightning this afternoon for the northeast Blue Mountains.

* AFFECTED AREA...Fire Weather Zones 690 Kittitas Valley, 691 Lower Columbia Basin of Oregon, 691 Lower Columbia Basin of Washington and 703 Warm Springs Reservation.

* TIMING...Until 10 PM PDT this evening.

* WINDS...West 15 to 25 mph with gusts of 25 to 40 mph.

* RELATIVE HUMIDITY...15 to 25 percent in the afternoon.

* IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.