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* WHAT...Dangerously hot conditions with heat index values between 95 and 105 degrees possible. * WHERE...In California, western Siskiyou County including Weed, Yreka, McCloud, and area valleys. In Oregon, areas between the coast and the Cascades including the Illinois Valley, Roseburg, Grants Pass, Medford, and Ashland. * WHEN...From Thursday morning through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

At 501 PM PDT, Doppler radar was tracking a strong thunderstorm 11 miles southeast of Nespelem Community, or 40 miles southeast of Omak, moving northeast at 35 mph. HAZARD...Wind gusts up to 50 mph, pea size hail, infrequent lightning and brief heavy rain. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Keller and the southeastern portion of Chuweah Creek Fire burn scar.

...SCATTERED THUNDERSTORMS WITH GUSTY OUTFLOW WINDS INTO THIS EVEING... ...LOW HUMIDITY AND STRONG SUSTAINED WINDS IN SOUTHEAST OREGON THIS AFTERNOON INTO EARLY THIS EVENING... .Scattered thunderstorms will continue to spread north and east across extreme eastern Oregon and southwest Idaho. Thunderstorms are expected to end in southeast Oregon by late this afternoon, but sustained winds and low humidity will keep red flag conditions going. Thunderstorms will persist in southwest and west-central Idaho through this evening. These storms have been producing a great deal of lightning, and numerous fire starts have already been reported. * Thunderstorms...Scattered thunderstorms ending this afternoon, followed by winds and low RH this afternoon into this evening. * Winds...Southwest 15 to 25 mph with gusts up to 40 mph. * Relative Humidity...As low as 11 percent. * Timing...Until 9 PM MDT /8 PM PDT/ this evening.

At 309 PM MDT, Doppler radar was tracking a strong thunderstorm near Wilder, or near Parma, moving northeast at 40 mph. HAZARD...Wind gusts up to 50 mph and penny size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. This strong thunderstorm will be near... Parma, Wilder, and Notus around 310 PM MDT. Emmett and Letha around 340 PM MDT.

...SCATTERED THUNDERSTORMS WITH GUSTY OUTFLOW WINDS... ...LOW HUMIDITY AND STRONG SUSTAINED WINDS IN SOUTHEAST OREGON THIS AFTERNOON... .Scattered thunderstorms have developed and will spread north and east this morning across southeast Oregon and southwest Idaho. Thunderstorms are expected to end in southeast Oregon by early this afternoon, but an increase in sustained winds and low humidity will keep red flag conditions going. Thunderstorms will persist into southwest and west-central Idaho through this evening. The National Weather Service in Boise has issued a Red Flag Warning for lightning and winds and low relative humidity, which is in effect until 9 PM MDT this evening. * Thunderstorms...Scattered thunderstorms ending this afternoon, followed by winds and low RH this afternoon into this evening. * Winds...Southwest 15 to 25 mph with gusts up to 40 mph. * Relative Humidity...As low as 11 percent. * Timing...Until 9 PM MDT /8 PM PDT/ this evening.

...SCATTERED THUNDERSTORMS BEGINNING EARLY WEDNESDAY MORNING WITH GUSTY OUTFLOW WINDS... ...LOW HUMIDITY AND STRONG SUSTAINED WINDS IN SOUTHEAST OREGON WEDNESDAY AFTERNOON... .Scattered thunderstorms will develop and spread north and east this morning across southeast Oregon and southwest Idaho. Thunderstorms are expected to end in southeast Oregon by early Wednesday afternoon, but an increase in sustained winds amidst low humidity will occur. Thunderstorms will persist into southwest and west- central Idaho through Wednesday evening. * Thunderstorms...Scattered thunderstorms beginning early Wednesday morning and ending Wednesday afternoon. * Winds...Southwest 15 to 25 mph with gusts up to 40 mph. * Relative Humidity...As low as 11 percent. * Timing...Until 9 PM MDT /8 PM PDT/ this evening.

...Gusty winds and Low RH will create critical fire weather conditions for some areas east of the Cascades this afternoon and evening... * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is banned during fire season. * AFFECTED AREA...Portions of Oregon Fire Weather Zones 624 and 625 and also California Fire Weather Zone 285. * WIND...Southwest 20 to 30 mph with gusts to 40 mph shifting to the west-northwest during the evening. * AFTERNOON MINIMUM HUMIDITY...10 to 15 percent. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

...SCATTERED THUNDERSTORMS BEGINNING EARLY WEDNESDAY MORNING WITH GUSTY OUTFLOW WINDS... ...LOW HUMIDITY AND STRONG SUSTAINED WINDS IN SOUTHEAST OREGON WEDNESDAY AFTERNOON... .Scattered thunderstorms will develop early Wednesday morning across southeast Oregon and southwest Idaho. Thunderstorms are expected to end in southeast Oregon by early Wednesday afternoon, but an increase in sustained winds amidst low humidity will occur. Thunderstorms will persist into southwest and west-central Idaho through Wednesday evening. * Thunderstorms...Scattered thunderstorms beginning early Wednesday morning and ending Wednesday afternoon. * Winds...Gusty and erratic outflow winds to 50 mph through early afternoon. Sustained winds increase to 15 to 20 mph with gusts to 30 mph in the afternoon. * Relative Humidity...10 to 19%. * Timing...From 3 AM MDT /2 AM PDT/ to 9 PM MDT /8 PM PDT/ Wednesday.

...SCATTERED THUNDERSTORMS BEGINNING EARLY WEDNESDAY MORNING WITH GUSTY OUTFLOW WINDS... ...LOW HUMIDITY AND STRONG SUSTAINED WINDS IN SOUTHEAST OREGON WEDNESDAY AFTERNOON... .Scattered thunderstorms will develop early Wednesday morning across southeast Oregon and southwest Idaho. Thunderstorms are expected to end in southeast Oregon by early Wednesday afternoon, but an increase in sustained winds amidst low humidity will occur. Thunderstorms will persist into southwest and west-central Idaho through Wednesday evening. * Thunderstorms...Scattered thunderstorms beginning early Wednesday morning and ending Wednesday afternoon. * Winds...Gusty and erratic outflow winds to 50 mph through early afternoon. Sustained winds increase to 15 to 20 mph with gusts to 30 mph in the afternoon. * Relative humidity...10 to 19%. * Timing...From 3 AM MDT /2 AM PDT/ to 9 PM MDT /8 PM PDT/ Wednesday.

...Gusty winds and Low RH will create critical fire weather conditions both this evening and again on Wednesday afternoon and evening... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from noon to 8 PM PDT Wednesday. The Fire Weather Watch has been upgraded. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is banned during fire season. * AFFECTED AREA...For both this evening and Wednesday afternoon and evening, portions of Oregon Fire Zone 624 and California Fire Zone 285. * WIND...For this afternoon and evening, Southwest 15 to 25 mph with gusts to 35 mph. For Wednesday southwest 20 to 30 mph with gusts to 40 mph Wednesday afternoon and evening. * AFTERNOON MINIMUM HUMIDITY...10 to 15 percent. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

...Gusty winds and Low RH will create critical fire weather conditions both this evening and again on Wednesday afternoon and evening... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from noon to 8 PM PDT Wednesday. The Fire Weather Watch is no longer in effect. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is banned during fire season. * AFFECTED AREA...Portions of Oregon Fire Zone 625.. * WIND...Southwest 20 to 30 mph with gusts to 40 mph. * HUMIDITY...10 to 15 percent. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

...Gusty winds and Low RH will create critical fire weather conditions both this evening and again on Wednesday afternoon and evening... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from noon to 8 PM PDT Wednesday. The Fire Weather Watch has been upgraded. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is banned during fire season. * AFFECTED AREA...For both this evening and Wednesday afternoon and evening, portions of Oregon Fire Zone 624 and California Fire Zone 285. * WIND...For this afternoon and evening, Southwest 15 to 25 mph with gusts to 35 mph. For Wednesday southwest 20 to 30 mph with gusts to 40 mph Wednesday afternoon and evening. * AFTERNOON MINIMUM HUMIDITY...10 to 15 percent. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

The National Weather Service in Medford has issued a Fire Weather Watch, which is in effect from Tuesday afternoon through Tuesday evening. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * AFFECTED AREA...In Oregon, the south and east parts of Fire weather zone 624, including portions of the Fremont and Winema National Forests. In California, the northern part of Fire weather zone 285, including a portion of the Modoc National Forest. * WIND...Southwest 15 to 25 mph with gusts to 35 mph. * AFTERNOON MINIMUM HUMIDITY...10 to 15 percent. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* AFFECTED AREA...Fire Weather Zones 640 Central Mountains of Oregon, 641 Lower Columbia Basin of Oregon and 691 Lower Columbia Basin. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 10 to 15 percent. * IMPACTS...The combination of wind and low relative humidity is conducive to rapid fire spread and extreme fire behavior for new and existing fires.

* AFFECTED AREA...Fire Weather Zones 640 Central Mountains of Oregon, 641 Lower Columbia Basin of Oregon and 691 Lower Columbia Basin. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 10 to 15 percent. * IMPACTS...The combination of wind and low relative humidity is conducive to rapid fire spread and extreme fire behavior for new and existing fires.

* WHAT...Northwest winds 20 to 30 mph with gusts up to 45 mph. * WHERE...Kittitas Valley. * WHEN...Until midnight PDT tonight. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

...DRY AND BREEZY CONDITIONS TODAY... .A strong dry cold front passing through today will produce gusty winds and low relative humidity. * Affected Area: Fire Weather Zone 702 Colville Reservation, Fire Weather Zone 703 Okanogan Valley, Fire Weather Zone 705 Foothills of Central Washington Cascades, Fire Weather Zone 706 Waterville Plateau, Fire Weather Zone 707 Western Columbia Basin, Fire Weather Zone 708 Eastern Columbia Basin -Palouse - Spokane Area and Fire Weather Zone 709 Lower Palouse -Snake River. * Winds: West 15 to 30 mph with gusts up to 45 mph. * Relative Humidities: 11 to 22 percent. * Impacts: Any new or existing fires will have the potential to spread rapidly.

* WHAT...Northwest winds 25 to 35 mph with gusts up to 50 mph. * WHERE...Kittitas Valley. * WHEN...Until midnight PDT tonight. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down.

...DRY AND BREEZY CONDITIONS TODAY... .A dry and strong cold front will produce gusty winds and low relative humidity across the Lower Columbia Basin down to central Oregon this afternoon and evening. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon and 691 Lower Columbia Basin. * WINDS...West 20 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...Windy conditions combined with low RHs will result in rapid fire spread and extreme fire behavior.

...DRY AND BREEZY CONDITIONS TODAY... .A dry and strong cold front will produce gusty winds and low relative humidity across the Lower Columbia Basin down to central Oregon this afternoon and evening. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon and 691 Lower Columbia Basin. * WINDS...West 20 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...Windy conditions combined with low RHs will result in rapid fire spread and extreme fire behavior.