Weather Alerts for Lower Hells Canyon/Salmon River RegionIssued by the National Weather Service |
Air Quality Alert
 RED FLAG WARNING |
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| LOWER HELLS CANYON/SALMON RIVER REGION | ||
Areas Affected: East Salmon River Mountains/Salmon NF - Lemhi and Lost River Range/Challis NF |
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| Effective: Fri, 7/17 1:18am | Updated: Fri, 7/17 2:39pm | Urgency: Expected |
| Expires: Fri, 7/17 9:00pm | Severity: Severe | Certainty: Likely |
Details:
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 411, 413, 422, 427, 475 AND 476... * AFFECTED AREA...Fire Weather Zone 475 East Salmon River Mountains/Salmon NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * IMPACTS...Scattered thunderstorms can produce frequent lightning that may in turn produce wildfire starts in receptive fuels. * THUNDERSTORMS...A mix of wet and dry storms, with wetting rains possible with stronger storms. * OUTFLOW WINDS...Gusts over 35 mph with peak gusts nearing 55-60 mph. Information: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Thunderstorm coverage of 25 percent, without specific rainfall criteria. |
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 AIR QUALITY ALERT |
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| LOWER HELLS CANYON/SALMON RIVER REGION | ||
Areas Affected: Orofino/Grangeville Region |
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| Effective: Fri, 7/17 11:49am | Updated: Fri, 7/17 2:39pm | Urgency: Unknown |
| Expires: Mon, 7/20 11:00am | Severity: Unknown | Certainty: Unknown |
Details:
AQAMSO * WHAT...Air Quality Advisory due to smoke from wildfires. Air Quality Index ranging from Moderate to Unhealthy. * WHERE...All Areas on the Nez Perce Reservation. * WHEN...Until Monday, July 20, 2026, at 10:00am. * IMPACTS...Those who experience health effects from smoke include children under 18, elders, pregnant women, people with asthma or have difficulty breathing, diabetes, heart problems or otherwise compromised health, and people who have high exposure (those who work, exercise, or spend extensive time outdoors). Information: Under the most severe pollution level, sensitive groups should avoid outdoor exposure and limit indoor activities, and everyone should restrict their outdoor activities. Idaho Department of Health and Welfare https://healthandwelfare.idaho.gov/health-wellness/environmental- health/wildfire-smoke Idaho Smoke Information Hotline: 1-800-345-1007 |
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