红旗警报于9月17日山地夏令时间上午4:31由博伊西爱达荷国家气象局发布,有效期至9月17日山地夏令时间晚上9:00。
……零星雷暴伴有大风和少量降雨……一个强低压系统将于今天下午带来零星雷暴，降雨量极少，阵风风速可达50……
...SCATTERED THUNDERSTORMS WITH GUSTY WINDS AND LITTLE RAINFALL...
A strong low pressure system will bring scattered thunderstorms this afternoon with minimal rainfall and outflow wind gusts up to 50 mph.
The National Weather Service in Boise has issued a Red Flag Warning for lightning, which is in effect from noon MDT /11 AM PDT/ today to 9 PM MDT /8 PM PDT/ this evening. The Fire Weather Watch is no longer in effect.
* AFFECTED AREA...In Idaho, Fire Weather Zones 403 Northern Boise National Forest, 421 Southern Boise/Western Sawtooth NF and including the Camas Prairie. In Oregon, Fire Weather Zones 670 Burns BLM, 671 Steens Mountain, 674 Northwestern Vale BLM and 675 Baker Valley.
* TIMING...From noon MDT /11 AM PDT/ today to 9 PM MDT /8 PM PDT/ this evening.
* THUNDERSTORMS...Scattered coverage with abundant lightning.
* OUTFLOW WINDS...Gusty erratic winds up to 50 mph.
* IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.
Affected area: Northern Boise National Forest; Southern Boise/Western Sawtooth NF, including the Camas Prairie; Burns BLM; Steens Mountain; Northwestern Vale BLM; Baker Valley