Aggregator

* 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...Hot conditions will continue on Sunday under the Heat Advisory. * WHERE...In Idaho, Upper Weiser River. In Oregon, Malheur County. * WHEN...Until midnight MDT /11 PM PDT/ Sunday night. * IMPACTS...Hot temperatures may cause heat illnesses to occur.

* 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.

...Abundant lightning this evening and again on Sunday... * Thunderstorms...Isolated to scattered storms with little to no precipitation and abundant lightning are possible this evening and Sunday. * Outflow Winds...Up to 60 MPH possible. * Timing...Until midnight MDT /11 PM PDT/ Sunday night. * Thunderstorms...15 to 30 percent expected coverage. Greatest coverage will be across southern portions of the fire zones.

At 524 PM PDT, Doppler radar was tracking a strong thunderstorm near Blitzen, or 45 miles northwest of Denio, moving northeast at 30 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. This strong thunderstorm will be near... Blitzen around 530 PM PDT. Butler Hill around 540 PM PDT. Frenchglen and Page Springs Campground around 600 PM PDT.

At 450 PM PDT, Doppler radar was tracking a strong thunderstorm near Beatys Butte, or 36 miles north of Dufferena, moving north at 15 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. This storm will remain over mainly rural areas of south central Harney County.

* 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...Heat will 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...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.

...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 continue through the weekend, along with a slight chance of thunderstorms on Sunday primarily over the mountains of central Oregon. Meanwhile, breezy winds and low RHs are expected to produce critical fire weather conditions for the Columbia Basin and Kittitas Valley on Sunday. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 9 PM PDT Sunday. The Fire Weather Watch is no longer in effect. * 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 30 mph. * RELATIVE HUMIDITY...As low as 10 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 continue through the weekend, along with a slight chance of thunderstorms on Sunday primarily over the mountains of central Oregon. Meanwhile, breezy winds and low RHs are expected to produce critical fire weather conditions for the Columbia Basin and Kittitas Valley on Sunday. ...FIRE WEATHER WATCH IS CANCELLED FOR FIRE WEATHER ZONE OR642... The National Weather Service in Pendleton has cancelled the Fire Weather Watch. * AFFECTED AREA...Fire Weather Zone 642 Southern Blue and Strawberry Mountains. * WINDS...West 5 to 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 9 percent. * TEMPERATURES...Up to 100. * IMPACTS...Any new and existing fires have a strong potential for extreme fire behavior. * 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 continue through the weekend, along with a slight chance of thunderstorms on Sunday primarily over the mountains of central Oregon. Meanwhile, breezy winds and low RHs are expected to produce critical fire weather conditions for the Columbia Basin and Kittitas Valley on Sunday. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 9 PM PDT Sunday. The Fire Weather Watch is no longer in effect. * 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 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...The combination of sustained wind and low relative humidity will result in conditions conducive to rapid fire spread and extreme fire behavior.

* WHAT...High temperatures of 95 to 101 degrees. * 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. * 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...Hot temperatures and high humidity may cause heat illnesses.

...Complex fire weather environment evolves this weekend... .Hot, dry and windy conditions will remain in place over most of Oregon today, and approaching monsoon moisture from the south will increase the threat of lightning across the forecast area beginning today and even more so on Sunday. Storms will likely be dry today given a very dry sub-cloud layer. The threat for storms is higher on Sunday as the moisture content increases and storms become a mix of wet and dry. ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING FOR 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, 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, through this evening. Tonight through Sunday, all areas are at risk for lightning on dry fuels. * 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...Storms will occur mainly during the afternoon and evening, with the greatest coverage expected Sunday afternoon into Sunday evening. Isolated thunderstorms are possible late tonight into Sunday morning and again Sunday night into Monday morning. Storms are likely to be dry today due to a very dry sub-cloud layer. Storms will trend wetter on Sunday, but remain a mix of wet and dry storms. * 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, and approaching monsoon moisture from the south will increase the threat of lightning across the forecast area beginning today and even more so on Sunday. Storms will likely be dry today given a very dry sub-cloud layer. The threat for storms is higher on Sunday as the moisture content increases and storms become a mix of wet and dry. ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY EVENING FOR 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, 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, through this evening. Tonight through Sunday, all areas are at risk for lightning on dry fuels. * 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...Storms will occur mainly during the afternoon and evening, with the greatest coverage expected Sunday afternoon into Sunday evening. Isolated thunderstorms are possible late tonight into Sunday morning and again Sunday night into Monday morning. Storms are likely to be dry today due to a very dry sub-cloud layer. Storms will trend wetter on Sunday, but remain a mix of wet and dry storms. * 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, and approaching monsoon moisture from the south will increase the threat of lightning across the forecast area beginning today and even more so on Sunday. Storms will likely be dry today given a very dry sub-cloud layer. The threat for storms is higher on Sunday as the moisture content increases and storms become a mix of wet and dry. * 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...Eastern portions of FWZ 621, east of the Jackson/Josephine county border. * 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, but isolated thunderstorms are possible late tonight into Sunday morning. Storms are likely to be dry tonight due to a very dry sub-cloud layer. Storms will trend wetter on Sunday, but remain a mix of wet and dry storms. * DETAILED URL...View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

...RED FLAG WARNING FOR WIND AND LOW HUMIDITY SUNDAY AFTERNOON AND EVENING ACROSS PARTS OF CENTRAL AND SOUTHERN WASHINGTON... The National Weather Service in Spokane has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 9 PM PDT Sunday. The Fire Weather Watch is no longer in effect. * Affected Area: Fire Weather Zone 705 Foothills of Central Washington Cascades and Fire Weather Zone 706 Waterville Plateau. * Winds: West 10 to 20 mph with gusts up to 35 mph. * Relative Humidities: 10 to 19 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.

...RED FLAG WARNING FOR WIND AND LOW HUMIDITY SUNDAY AFTERNOON AND EVENING ACROSS PARTS OF CENTRAL AND SOUTHERN WASHINGTON... The National Weather Service in Spokane has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 9 PM PDT Sunday. * Affected Area: Fire Weather Zone 707 Western Columbia Basin and Fire Weather Zone 709 Lower Palouse-Snake River. * Winds: West 10 to 20 mph with gusts up to 30 mph. The winds will be strongest for the Western Columbia Basin in the late afternoon and evening hours. The winds will be strongest for the Lower Palouse Snake River area during the afternoon. * Relative Humidities: 8 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.