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* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North Cascades Generally above 1500 Feet. * THUNDERSTORMS...Scattered thunderstorms with LAL 3 are expected to develop along and near the crest of the Cascades during the afternoon and evening hours. * OUTFLOW WINDS...Gusty and erratic winds are possible in the vicinity of any thunderstorms that develop. * IMPACTS...Scattered lightning in dry fuels can cause multiple fire starts. Thunderstorms can also bring sudden sharp wind shifts on existing fires, causing rapid changes in a fire's rate of spread and direction of spread. Thunderstorm outflow winds can be a threat for several hours following the start of a new lightning-caused fire. If a fire were to begin, air quality may diminish in the surrounding area.

* AFFECTED AREA...Fire Weather Zone 659 West Slopes of the Central Cascades Generally above 1500 Feet. * THUNDERSTORMS...Scattered thunderstorms with LAL 3 are expected during the afternoon and evening hours. * OUTFLOW WINDS...Gusty and erratic winds are possible in the vicinity of any thunderstorms that develop. * IMPACTS...Scattered lightning in dry fuels can cause multiple fire starts. Thunderstorms can also bring sudden sharp wind shifts on existing fires, causing rapid changes in a fire's rate of spread and direction of spread. Thunderstorm outflow winds can be a threat for several hours following the start of a new lightning-caused fire. If a fire were to begin, air quality may diminish in the surrounding area.

* WHAT...Dangerously hot conditions with temperatures up to 108 possible at low elevations. Hottest days Sunday and Monday. * WHERE...Baker County. * WHEN...From Saturday morning through Tuesday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...

* WHAT...For the Excessive Heat Warning, dangerously hot conditions with temperatures up to 105 expected. For the Excessive Heat Watch, dangerously hot conditions with temperatures up to 110 possible. Hottest days Sunday and Monday. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Excessive Heat Warning, from noon Thursday to noon MDT Saturday. For the Excessive Heat Watch, from Saturday afternoon through Tuesday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...Dangerously hot conditions with high temperatures up to 105 possible at low elevations. Hottest days Sunday and Monday. * WHERE...Portions of south central, southwest and west central Idaho and southeast Oregon. * WHEN...From Saturday afternoon through Tuesday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...For the Excessive Heat Warning, dangerously hot conditions with temperatures up to 105 expected. For the Excessive Heat Watch, dangerously hot conditions with temperatures up to 110 possible. Hottest days Sunday and Monday. * WHERE...Portions of southwest and west central Idaho and southeast Oregon. * WHEN...For the Excessive Heat Warning, from noon Thursday to noon MDT Saturday. For the Excessive Heat Watch, from Saturday afternoon through Tuesday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...Hot conditions during the day for the valleys. Highs 95 to 110. Overnight lows mainly in the upper 50s and 60s. * WHERE...Portions of North and North Central Idaho and Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...Until 10 PM PDT Sunday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially those without effective cooling or adequate hydration.

* WHAT...Hot conditions during the day for the valleys. Highs 90 to 100. Overnight lows mainly in the upper 50s and 60s. * WHERE...Tiger, Metaline Falls, Fruitland, Springdale-Hunters Road, Newport, Inchelium, Flowery Trail Road, Deer Park, Ione, Boulder Creek Road, Metaline, Sherman Pass, Republic, Northport, Wauconda, Kettle Falls, Chewelah, Highway 20 Wauconda Summit, Orin-Rice Road, Colville, and Chesaw Road. * WHEN...Until 10 PM PDT Sunday. * IMPACTS...Heat will increase the risk of heat-related illnesses, especially those without effective cooling or adequate hydration.

Isolated to scattered thunderstorms containing little to no rainfall will be possible over much of Washington this afternoon and tonight. Any thunderstorms have the potential to produce gusty outflow winds that could travel quite a distance from the thunderstorm source. The National Weather Service in Spokane has issued a Red Flag Warning for thunderstorms, which is in effect from 4 PM this afternoon to 2 AM PDT Thursday. * Affected Area: Fire Weather Zone 701 Foothills of Northeast Washington. * Thunderstorms: Isolated to scattered thunderstorms late this afternoon and through the evening. * Outflow Winds: Gusty and erratic winds are possible with any thunderstorms that develop. The outflow winds could travel quite a distance from the core of the storm. * Impacts: Unstable conditions could lead to plume dominated fires. Thunderstorms containing little to no rain and gusty winds combined with dry fuels will lead to the potential for new fire starts in addition to current fires, may overwhelm initial attack capabilities.

Isolated to scattered thunderstorms containing little to no rainfall will be possible over much of Washington this afternoon and tonight. Any thunderstorms have the potential to produce gusty outflow winds that could travel quite a distance from the thunderstorm source. The National Weather Service in Spokane has issued a Red Flag Warning for thunderstorms, which is in effect until midnight tonight. * Affected Area: Fire Weather Zone 709 Lower Palouse - Snake River. * Thunderstorms: Isolated to scattered thunderstorms late this afternoon and through the evening. * Outflow Winds: Gusty and erratic winds are possible with any thunderstorms that develop. The outflow winds could travel quite a distance from the core of the storm. * Impacts: Unstable conditions could lead to plume dominated fires. Thunderstorms containing little to no rain and gusty winds combined with dry fuels will lead to the potential for new fire starts in addition to current fires, may overwhelm initial attack capabilities.

Isolated to scattered thunderstorms containing little to no rainfall will be possible over much of Washington this afternoon and tonight. Any thunderstorms have the potential to produce gusty outflow winds that could travel quite a distance from the thunderstorm source. * Affected Area: Fire Weather Zone 696 East Washington Central Cascades, Fire Weather Zone 697 East Portion of North Cascades National Park/Lake Chelan National Recreation Area, Fire Weather Zone 698 East Washington North Cascades, Fire Weather Zone 699 Okanogan Highlands and Kettle Mountains, Fire Weather Zone 702 Colville Reservation, Fire Weather Zone 703 Okanogan Valley, Fire Weather Zone 704 Methow Valley, Fire Weather Zone 705 Foothills of Central Washington Cascades and Fire Weather Zone 706 Waterville Plateau. * Thunderstorms: Scattered thunderstorms with abundant lightning. * Outflow Winds: Gusty and erratic winds are possible with any thunderstorms that develop. The outflow winds could travel quite a distance from the core of the storm. * Impacts: Thunderstorms containing little to no rain combined with dry fuels will lead to the potential for new fire starts that may overwhelm initial attack capabilities. Gusty winds with thunderstorms will result in rapid fire spread with any new or existing fires.

Isolated to scattered thunderstorms containing little to no rainfall will be possible over much of Washington this afternoon and tonight. Any thunderstorms have the potential to produce gusty outflow winds that could travel quite a distance from the thunderstorm source. * Affected Area: Fire Weather Zone 707 Western Columbia Basin and Fire Weather Zone 708 Eastern Columbia Basin - Palouse -Spokane Area. * Thunderstorms: Isolated coverage for the western Columbia Basin and isolated to scattered as you head towards the Palouse and Spokane area. The best potential of thunderstorms for the Palouse and Spokane area looks to be after 5 PM. * Outflow Winds: Gusty and erratic winds are possible with any thunderstorms that develop. Gusty winds from thunderstorms that develop over the Cascades and north central Washington could send an outflow boundary across the Columbia Basin, Palouse and Spokane area. * Haines: High level haines of 6, which is high. This means very dry and unstable conditions exist. * Humidity: 12 to 19 percent. * Impacts: Unstable conditions could lead to plume dominated fires. Thunderstorms containing little to no rain and gusty winds combined with dry fuels will lead to the potential for new fire starts in addition to current fires, may overwhelm initial attack capabilities.

...ISOLATED THUNDERSTORM THREAT SHIFTS NORTH FOR THE REST OF THE DAY... A low pressure system remains situated over the forecast area, creating a wide swath of showers stretching from the Columbia River Gorge all the way through the eastern mountains of Oregon as of this morning. The current forecast calls for a resurgence of thunderstorm activity once daytime heating initiates and instability builds, primarily for the Oregon Columbia Basin northward. The storm threat is expected to last into the evening hours. Dry weather is expected for the previously warned zones across central Oregon for the rest of the day. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * THUNDERSTORMS...Isolated thunderstorms. Lightning activity level of 2 to 3. * OUTFLOW WINDS...35 to 45 mph. Thunderstorm outflow winds may result in erratic fire spread. * IMPACTS...Any lightning strikes combined with hot and dry conditions could cause new fire starts.

...ISOLATED THUNDERSTORM THREAT SHIFTS NORTH FOR THE REST OF THE DAY... A low pressure system remains situated over the forecast area, creating a wide swath of showers stretching from the Columbia River Gorge all the way through the eastern mountains of Oregon as of this morning. The current forecast calls for a resurgence of thunderstorm activity once daytime heating initiates and instability builds, primarily for the Oregon Columbia Basin northward. The storm threat is expected to last into the evening hours. Dry weather is expected for the previously warned zones across central Oregon for the rest of the day. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * THUNDERSTORMS...Isolated thunderstorms. Lightning activity level of 2 to 3. * OUTFLOW WINDS...35 to 45 mph. Thunderstorm outflow winds may result in erratic fire spread. * IMPACTS...Any lightning strikes combined with hot and dry conditions could cause new fire starts.

* AFFECTED AREA...In Washington, Fire Weather Zone 634 Southern Gifford Pinchot National Forest and Fire Weather Zone 635 Mt. Adams Ranger District of the Gifford-Pinchot National Forest. * THUNDERSTORMS...Isolated to scattered thunderstorms. * OUTFLOW WINDS...Gusts up to 40 mph possible. * IMPACTS...Frequent lightning and critically dry fuels may result in numerous fire starts. Thunderstorm outflow winds may result in erratic fire spread.

* AFFECTED AREA...In Washington, Fire Weather Zone 636 Western Columbia River Gorge in Oregon and Washington. * THUNDERSTORMS...Isolated to scattered thunderstorms. * OUTFLOW WINDS...Gusts up to 40 mph possible. * IMPACTS...Frequent lightning and critically dry fuels may result in numerous fire starts. Thunderstorm outflow winds may result in erratic fire spread.

* AFFECTED AREA...In Oregon, Fire Weather Zone 688 Mt. Hood National Forest Region. * THUNDERSTORMS...Isolated to scattered thunderstorms. * OUTFLOW WINDS...Gusts up to 40 mph possible. * IMPACTS...Frequent lightning and critically dry fuels may result in numerous fire starts. Thunderstorm outflow winds may result in erratic fire spread.

Scattered thunderstorms containing little to no rainfall will be possible over much of North Central Washington Wednesday afternoon and evening. Any thunderstorms have the potential to produce gusty outflow winds that could travel quite a distance from the thunderstorm source. Isolated thunderstorms are possible elsewhere across Eastern Washington and North Idaho. The National Weather Service in Spokane has issued a Red Flag Warning for thunderstorms, which is in effect from noon Wednesday to midnight Wednesday night. * Affected Area: Fire Weather Zone 707 Western Columbia Basin and Fire Weather Zone 708 Eastern Columbia Basin - Palouse -Spokane Area. * Haines: High level haines of 6, which is very high. This means very dry and unstable conditions exist. * Humidity: 12 to 19 percent. * Outflow Winds: Gusty and erratic winds are possible with any thunderstorms that develop. Gusty winds from thunderstorms that develop over the Cascades and north central Washington could send an outflow boundary across the Columbia Basin, Palouse and Spokane area. * Thunderstorms: Thunderstorm coverage at this time looks to be isolated across the Basin, Palouse and Spokane area. * Impacts: Unstable conditions could lead to plume dominated fires. Rapid fire spread with any new or existing fires due to the gusty wind potential. These conditions may overwhelm initial attack capabilities.

Scattered thunderstorms containing little to no rainfall will be possible over much of North Central Washington Wednesday afternoon and evening. Any thunderstorms have the potential to produce gusty outflow winds that could travel quite a distance from the thunderstorm source. Isolated thunderstorms are possible elsewhere across Eastern Washington and North Idaho. The National Weather Service in Spokane has issued a Red Flag Warning for abundant lightning, which is in effect from 11 AM Wednesday to midnight PDT Wednesday night. The Fire Weather Watch is no longer in effect. * Affected Area: Fire Weather Zone 696 East Washington Central Cascades, Fire Weather Zone 697 East Portion of North Cascades National Park/Lake Chelan National Recreation Area, Fire Weather Zone 698 East Washington North Cascades, Fire Weather Zone 699 Okanogan Highlands and Kettle Mountains, Fire Weather Zone 702 Colville Reservation, Fire Weather Zone 703 Okanogan Valley, Fire Weather Zone 704 Methow Valley, Fire Weather Zone 705 Foothills of Central Washington Cascades and Fire Weather Zone 706 Waterville Plateau. * Thunderstorms: Scattered thunderstorms with abundant lightning, LAL 6. * Outflow Winds: Gusty and erratic winds are possible with any thunderstorms that develop. The outflow winds could travel quite a distance from the core of the storm. * Impacts: Thunderstorms containing little to no rain combined with dry fuels will lead to the potential for new fire starts that may overwhelm initial attack capabilities. Gusty winds with thunderstorms will result in rapid fire spread with any new or existing fires.

...ISOLATED THUNDERSTORM THREAT CONTINUES THROUGH THE EVENING... * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon, 690 Kittitas Valley, 691 Lower Columbia Basin, 694 Yakama Alpine District and 695 East Washington South Central Cascade Mountains. * THUNDERSTORMS...Isolated thunderstorms. Lightning activity level of 2. * OUTFLOW WINDS...35 to 45 mph. Thunderstorm outflow winds may result in erratic fire spread. * IMPACTS...Any lightning strikes combined with hot and dry conditions could cause new fire starts.