Weather Alerts for Upper Snake River PlainIssued by the National Weather Service |
 RED FLAG WARNING |
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| UPPER SNAKE RIVER PLAIN | ||
Areas Affected: Upper Snake River Valley/Idaho Falls BLM - Centennial Mountains and Snake River Range/Targhee NF - Middle Snake River Valley/Twin Falls BLM north of the Snake River - Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River - East Salmon River Mountains/Salmon NF - Lemhi and Lost River Range/Challis NF |
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| Effective: Sat, 7/27 2:56am | Updated: Sat, 7/27 3:25am | Urgency: Expected |
| Expires: Sat, 7/27 3:00pm | Severity: Severe | Certainty: Likely |
Details:
* AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF, Fire Weather Zone 425 Middle Snake River Valley/Twin Falls BLM north of the Snake River, Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River, 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 will develop during the afternoon and evening on Saturday. Besides gusty and erratic winds near thunderstorms, frequent lightning can increase wildfire starts. * THUNDERSTORMS...25 to 50 percent coverage expected. * OUTFLOW WINDS...40 to 60 MPH possible. 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: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria. - Other high impact events deemed critical by the National Weather Service and area fire management agencies. |
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| RED FLAG WARNING |
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| UPPER SNAKE RIVER PLAIN | ||
Areas Affected: Caribou Range/Caribou NF |
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| Effective: Sat, 7/27 2:56am | Updated: Sat, 7/27 3:25am | Urgency: Expected |
| Expires: Sat, 7/27 3:00pm | Severity: Severe | Certainty: Likely |
Details:
* AFFECTED AREA...Fire Weather Zone 413 Caribou Range/Caribou NF. * IMPACTS...Scattered thunderstorms will develop during the morning and continue through the evening. Besides gusty and erratic winds near thunderstorms, frequent lightning can increase wildfire starts. * THUNDERSTORMS...25 to 50 percent coverage expected. * OUTFLOW WINDS...40 to 60 MPH possible. 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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| UPPER SNAKE RIVER PLAIN | ||
Areas Affected: Yellowstone National Park - Absaroka Mountains - Cody Foothills - North Bighorn Basin - Southwest Bighorn Basin - Southeast Bighorn Basin - Owl Creek and Bridger Mountains - Bighorn Mountains West - Bighorn Mountains Southeast - Northeast Johnson County - Southeast Johnson County - Teton and Gros Ventre Mountains - Jackson Hole |
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| Effective: Fri, 7/26 12:24pm | Updated: Sat, 7/27 3:25am | Urgency: Unknown |
| Expires: Sun, 7/28 1:00pm | Severity: Unknown | Certainty: Unknown |
Details:
The following message is transmitted on behalf of the Wyoming Department of Environmental Quality, Air Quality Division, and the Wyoming Department of Health. * WHAT...Air Quality Alert for Wildfire Smoke. * WHERE...Portions of northwest and northern Wyoming. * WHEN...12 AM MDT Saturday through 1 PM MDT Sunday. * IMPACTS...Smoke from western US wildfires will limit visibilities at times. HEALTH INFORMATION...The Wyoming Department of Health recommends that the elderly, young children, and individuals with respiratory problems avoid excessive physical exertion and minimize outdoor activities during this time. Wildfire smoke is made up of a variety of pollutants, including particulate matter and ozone, which can cause respiratory health effects. Although these people are most susceptible to health impacts, the Department of Health also advises that everyone should avoid prolonged exposure to poor air quality conditions. CURRENT CONDITIONS...The Wyoming Department of Environmental Quality, Air Quality Division offers near real-time air quality data for Wyoming's monitoring stations and health effects information to help the public interpret current conditions. Current air quality conditions across the state of Wyoming can be found at http://www.wyvisnet.com/. |
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