Weather Alerts for Eastern ORIssued by the National Weather Service |
 SPECIAL WEATHER STATEMENT |
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| EASTERN OR | ||
Areas Affected: Northern Blue Mountains of Oregon - Foothills of the Northern Blue Mountains of Oregon - Foothills of the Southern Blue Mountains of Oregon - North Central Oregon - Central Oregon - Lower Columbia Basin of Washington - Foothills of the Blue Mountains of Washington |
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| Effective: Thu, 2/5 12:28pm | Updated: Thu, 2/5 4:10pm | Urgency: Expected |
| Expires: Fri, 2/6 12:30am | Severity: Moderate | Certainty: Observed |
Details:
Areas of dense fog reducing visibility as low as one quarter mile will persist across many areas especially above about 2000 ft through the duration of the afternoon and into the evening. By the evening and overnight, many of these areas of dense fog will expand to lower elevations, becoming more widespread, especially for areas along the foothills of the Blue Mountains. Motorists should be prepared for dense fog expanding overnight, potentially creating a travel hazard well into the late morning on Friday. |
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| AIR STAGNATION ADVISORY |
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| EASTERN OR | ||
Areas Affected: Lower Treasure Valley - Upper Treasure Valley - Western Magic Valley - Upper Weiser River - Baker County - Malheur County - Oregon Lower Treasure Valley |
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| Effective: Thu, 2/5 12:27pm | Updated: Thu, 2/5 4:10pm | Urgency: Expected |
| Expires: Fri, 2/6 1:30pm | Severity: Moderate | Certainty: Likely |
Details:
* WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of south central and southwest Idaho and northeast and southeast Oregon. * WHEN...Until 5 AM MST /4 AM PST/ Monday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Information: Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air. |
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