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...HOT, DRY, AND UNSTABLE WITH A CHANCE OF THUNDERSTORMS OVER SOUTHEAST OREGON THIS WEEKEND... ...DRY AND BREEZY CONDITIONS IN THE COLUMBIA BASIN AND KITTITAS VALLEY SUNDAY... Hot, dry, and unstable conditions look to continue through the weekend with a chance at thunderstorms now on Sunday that could rise up into the region. Meanwhile breezy winds and low RH's may produce critical fire weather conditions for the Columbia Basin and Kittitas Valley on Sunday. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon, 690 Kittitas Valley and 691 Lower Columbia Basin. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...The combination of sustained wind and low relative humidity will result in conditions conducive to rapid fire spread and extreme fire behavior.

...HOT, DRY, AND UNSTABLE WITH A CHANCE OF THUNDERSTORMS OVER SOUTHEAST OREGON THIS WEEKEND... ...DRY AND BREEZY CONDITIONS IN THE COLUMBIA BASIN AND KITTITAS VALLEY SUNDAY... Hot, dry, and unstable conditions look to continue through the weekend with a chance at thunderstorms now on Sunday that could rise up into the region. Meanwhile breezy winds and low RH's may produce critical fire weather conditions for the Columbia Basin and Kittitas Valley on Sunday. * AFFECTED AREA...Fire Weather Zone 642 Southern Blue and Strawberry Mountains. * WINDS...West 5 to 10 mph. * RELATIVE HUMIDITY...As low as 9 percent. * TEMPERATURES...Up to 99. * IMPACTS...For the Red Flag Warning - Any new and existing fires have a strong potential for extreme fire behavior. For the fire weather watch - New fire starts with cloud-to-ground lightning should be expected with any storms that develop. Gusty outflow winds will threaten fires with rapid growth. * THUNDERSTORMS...Any storms that develop will initially have little to no rainfall, but will be capable of producing strong, gusty outflow winds. * OUTFLOW WINDS...Gusts of 35 to 50 mph possible. * HAINES...As high as 6.

...HOT, DRY, AND UNSTABLE WITH A CHANCE OF THUNDERSTORMS OVER SOUTHEAST OREGON THIS WEEKEND... ...DRY AND BREEZY CONDITIONS IN THE COLUMBIA BASIN AND KITTITAS VALLEY SUNDAY... Hot, dry, and unstable conditions look to continue through the weekend with a chance at thunderstorms now on Sunday that could rise up into the region. Meanwhile breezy winds and low RH's may produce critical fire weather conditions for the Columbia Basin and Kittitas Valley on Sunday. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon, 690 Kittitas Valley and 691 Lower Columbia Basin. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...The combination of sustained wind and low relative humidity will result in conditions conducive to rapid fire spread and extreme fire behavior.

...HOT, DRY, AND UNSTABLE WITH A CHANCE OF THUNDERSTORMS OVER SOUTHEAST OREGON THIS WEEKEND... ...DRY AND BREEZY CONDITIONS IN THE COLUMBIA BASIN AND KITTITAS VALLEY SUNDAY... Hot, dry, and unstable conditions look to continue through the weekend with a chance at thunderstorms now on Sunday that could rise up into the region. Meanwhile breezy winds and low RH's may produce critical fire weather conditions for the Columbia Basin and Kittitas Valley on Sunday. * AFFECTED AREA...Fire Weather Zone 642 Southern Blue and Strawberry Mountains. * WINDS...West 5 to 10 mph. * RELATIVE HUMIDITY...As low as 9 percent. * TEMPERATURES...Up to 99. * IMPACTS...For the Red Flag Warning - Any new and existing fires have a strong potential for extreme fire behavior. For the fire weather watch - New fire starts with cloud-to-ground lightning should be expected with any storms that develop. Gusty outflow winds will threaten fires with rapid growth. * THUNDERSTORMS...Any storms that develop will initially have little to no rainfall, but will be capable of producing strong, gusty outflow winds. * OUTFLOW WINDS...Gusts of 35 to 50 mph possible. * HAINES...As high as 6.

* WHAT...Dangerously hot conditions through Sunday, especially at lower elevations. * WHERE...In Idaho, Lower Treasure Valley ID. In Oregon, Oregon Lower Treasure Valley. * WHEN...Until midnight MDT Sunday night. * 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 today, especially at lower elevations. Hot conditions will continue on Sunday for the Heat Advisory. * WHERE...In Idaho, Upper Weiser River. In Oregon, Malheur County. * WHEN...For the Excessive Heat Warning, until midnight MDT /11 PM PDT/ tonight. For the Heat Advisory, from midnight MDT /11 PM PDT/ tonight to midnight MDT /11 PM PDT/ Sunday night. * 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 today, especially at lower elevations. Hot conditions will continue on Sunday for the Heat Advisory. * WHERE...Baker County. * WHEN...For the Excessive Heat Warning, until 11 PM PDT this evening. For the Heat Advisory, from 11 PM this evening to 11 PM PDT Sunday. * 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 today, especially at lower elevations. Hot conditions will continue on Sunday for the Heat Advisory. * WHERE...Baker County. * WHEN...For the Excessive Heat Warning, until 11 PM PDT this evening. For the Heat Advisory, from 11 PM this evening to 11 PM PDT Sunday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...Hot conditions today, especially at lower elevations. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until midnight MDT /11 PM PDT/ tonight. * 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 today, especially at lower elevations. Hot conditions will continue on Sunday for the Heat Advisory. * WHERE...In Idaho, Upper Weiser River. In Oregon, Malheur County. * WHEN...For the Excessive Heat Warning, until midnight MDT /11 PM PDT/ tonight. For the Heat Advisory, from midnight MDT /11 PM PDT/ tonight to midnight MDT /11 PM PDT/ Sunday night. * 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 93 to 105. Overnight lows will be 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...Hot temperatures may cause heat illnesses.

...DRY AND BREEZY CONDITIONS EXPECTED IN THE LEE OF THE CASCADES ON SUNDAY AFTERNOON AND EVENING... Breezy winds, hot temperatures, and low relative humidity values will occur over the area on Sunday afternoon and evening. This will result in an elevated fire risk on existing or new fires. * Affected Area: Fire Weather Zone 705 Foothills of Central Washington Cascades (Zone 705) and Fire Weather Zone 706 Waterville Plateau (Zone 706). * Winds: West 10 to 20 mph with gusts up to 35 mph. * Relative Humidities: 10 to 18 percent. * Impacts: The combination of gusty winds, low relative humidity values, hot temperatures, and dried fuels could lead to rapid fire spread on existing or new fires.

* WHAT...Hot conditions with temperatures 95-105 degrees expected. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 10 PM PDT Sunday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

* WHAT...Hot conditions with temperatures 95-105 degrees expected. This will pose a moderate to locally major risk of heat-related illness. * WHERE...Portions of central, north central, and northeast Oregon and central, south central, and southeast Washington. * WHEN...Until 10 PM PDT Sunday. * IMPACTS...Heat will significantly increase the risk of heat-related illnesses for those who are sensitive to heat, especially those without effective cooling or adequate hydration.

* WHAT...High temperatures of 95 to 101 degrees with lows in the mid to upper 50s expected. * WHERE...In California, Modoc County and eastern Siskiyou County. This includes the cities and communities of Macdoel, Tulelake, Pondosa, Bray, Tennant, Dorris, Tionesta, Alturas, and Adin. In Oregon, Klamath and Lake counties. This includes the cities of Klamath Falls, Chemult, Summer Lake, Chiloquin, Malin, Keno, Sprague River, and Lakeview. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Hot temperatures may cause heat illnesses. Area rivers will be cold and can cause shock to swimmers.

* WHAT...High temperatures of 95 to 103 degrees and lows of 55 to 65 are expected. * WHERE...Josephine and Jackson counties and eastern Curry County. This includes the entire Rogue Valley and the cities of Medford, Grants Pass, Cave Junction, and Butte Falls. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Area rivers will be cold and can cause shock to swimmers.

...Complex fire weather environment evolves this weekend... .Hot, dry and windy conditions will remain in place over most of Oregon today, although approaching monsoon moisture from the south will increase the threat of lightning across the forecast area this afternoon and evening. Storms will likely be on the drier side today given available moisture in the air. The threat for storms is higher on Sunday as the moisture content increases. ...FIRE WEATHER WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 624 AND 625... * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...For the Red Flag Warning today, critical conditions due to gusty winds and low RH are expected north of a line from Chiloquin to Paisley while lightning on dry fuels is expected south. * WIND...Southwest 15 to 25 with gusts to 25 and 35 mph. * HUMIDITY...7 to 12 percent. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to have very little to no precipitation, especially outside of storm cores. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...The best chance for storms will be Sunday afternoon into Sunday evening. Isolated dry thunderstorms are more likely today as the atmosphere appears to be very dry. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

...Complex fire weather environment evolves this weekend... .Hot, dry and windy conditions will remain in place over most of Oregon today, although approaching monsoon moisture from the south will increase the threat of lightning across the forecast area this afternoon and evening. Storms will likely be on the drier side today given available moisture in the air. The threat for storms is higher on Sunday as the moisture content increases. ...FIRE WEATHER WATCH NOW IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 624 AND 625... * IMPACTS...Given the recent prolonged stretch of very hot and very dry conditions, lightning efficiency will be high to very high for fire starts. Any fires that develop will likely spread rapidly. * AFFECTED AREA...For the Red Flag Warning today, critical conditions due to gusty winds and low RH are expected north of a line from Chiloquin to Paisley while lightning on dry fuels is expected south. * WIND...Southwest 15 to 25 with gusts to 25 and 35 mph. * HUMIDITY...7 to 12 percent. * THUNDERSTORMS...Isolated to scattered high based storms that are likely to have very little to no precipitation, especially outside of storm cores. Lightning strikes outside of precipitation cores are possible and cause for concern. * OUTFLOW WINDS...Gusts up to 35 mph. These outflow winds can travel up to 50 miles away from the thunderstorm that caused it. * ADDITIONAL INFORMATION...The best chance for storms will be Sunday afternoon into Sunday evening. Isolated dry thunderstorms are more likely today as the atmosphere appears to be very dry. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

...HOT, DRY, AND UNSTABLE WITH A CHANCE OF THUNDERSTORMS OVER SOUTHEAST OREGON THIS WEEKEND... ...DRY AND BREEZY CONDITIONS IN THE COLUMBIA BASIN AND KITTITAS VALLEY SUNDAY... Hot, dry, and unstable conditions coupled with a threat of isolated thunderstorms over southeast Oregon this weekend brings a risk of dry lightning startups and potential for extreme fire behavior. Breezy winds will also develop through the Cascade gaps Sunday, and will coincide with critically low RHs in the afternoon. * AFFECTED AREA...Fire Weather Zones 641 Lower Columbia Basin of Oregon, 690 Kittitas Valley and 691 Lower Columbia Basin. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...The combination of sustained wind and low relative humidity will result in conditions conducive to rapid fire spread and extreme fire behavior.

...HOT, DRY, AND UNSTABLE WITH A CHANCE OF THUNDERSTORMS OVER SOUTHEAST OREGON THIS WEEKEND... ...DRY AND BREEZY CONDITIONS IN THE COLUMBIA BASIN AND KITTITAS VALLEY SUNDAY... Hot, dry, and unstable conditions coupled with a threat of isolated thunderstorms over southeast Oregon this weekend brings a risk of dry lightning startups and potential for extreme fire behavior. Breezy winds will also develop through the Cascade gaps Sunday, and will coincide with critically low RHs in the afternoon. * AFFECTED AREA...Fire Weather Zones 642 Southern Blue and Strawberry Mountains and 644 Central Blue Mountains. * IMPACTS...New fire starts with cloud-to-ground lightning should be expected with any storms that develop. Gusty outflow winds will threaten fires with rapid growth. * THUNDERSTORMS...Any storms that develop will initially have little to no rainfall, but will be capable of producing strong, gusty outflow winds. * OUTFLOW WINDS...Gusts of 35 to 50 mph possible.