RED FLAG WARNING in effect from 11:00am this morning to 11:00pm this evening for portions for fire weather zones 617, 623, 624, and 625 for abundant lightning on dry fuels.
Main areas impacted will be near the Cascade crest from Crater Lake northward and east of Toketee Falls, then eastward across northern Klamath and Lake Counties down to about Hart Mountain Wildlife Refuge.
Dry thunderstorms expected in northeastern California and south central Oregon Tuesday evening into Wednesday morning. Abundant lightning possible Wednesday morning through Wednesday evening across portions of the interior west side of northern California and southwestern Oregon.
RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR PORTIONS OF FIRE WEATHER ZONE 624 AND ALL FIRE WEATHER ZONE 625 AND FOR HAINES 6 AT THE MCCOY FIRE
Fire weather watch in effect from Thursday Afternoon [8/9/18] through Thursday Evening for strong gusty wind with low relative humidity for most of fire weather zones 281 and 285 in California (Western Siskiyou County, Modoc County) and 624 and 625 in Oregon (Eastern Klamath County, Lake County Harney County).
KLAMATH FALLS, Ore. – Smoke intrusion from regional wildfires continues to create hazardous air quality concerns in Klamath County. County residents should take precautions to avoid health problems.
Isolated to scattered thunderstorms likely this afternoon and evening, mostly from the Siskiyous south and Cascades east south of Lake of the Woods. Lightning and high fire danger will likely result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite rainfall, initial attack resources could be overwhelmed and holdover fires are possible.
Temperatures will reach the triple digits across the valleys west of the Cascades and northern California. Meanwhile, highs will soar into the upper 90s for many areas east of the Cascades. Overnight temperatures will be quite warm during this time as well so there will be little relief from the heat at night. If you’re looking for a break from the heat, head to the coast or to the mountains.
Abundant lightning on existing very dry fuels could cause numerous new fire ignitions. Gusty and erratic outflow winds could also create extreme fire growth potential
Fire Weather Watch in effect from Sunday afternoon through Sunday evening for abundant lighting on dry fuels.
The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM this afternoon to 9 PM PDT this evening.
South winds will continue this evening in northern California and areas east of the Cascades. Very low relative humidity is expected over Modoc County with breezy west to southwest winds. On Sunday afternoon and evening, parts of south central Oregon and Modoc County will also experience both gusty winds and low relative humidity. Sunday should be the driest of the two days.
The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 2 PM to 8 PM PDT Friday. The Fire Weather Watch is no longer in effect.
The National Weather Service in Medford has upgraded a previous Fire Weather Watch to a RED FLAG WARNING, which is in effect from 1:00 PM to 1:00 PM.
The National Weather Service in Medford has issued a Fire Weather Watch, which is in effect from Thursday afternoon through Thursday evening.
A Previously issued Freeze Watch is now a Freeze Warning for Tonight through tomorrow morning.
URGENT - WEATHER MESSAGE National Weather Service Medford
Cold air mass could bring freezing temperatures to many areas east of the Cascades Sunday morning
Showers and thunderstorms will be likely this week for most of the area. The best chance for thunderstorms west of the Cascades will be on Tuesday after which the threat will shift east to the Cascades and East Side.
Two storm systems will arrive back to back and bring periods of heavy rain to southern Oregon and northern California over the next several days. Snow levels will quickly rise to about 8000 feet early on Thursday and will linger there through Saturday before falling to around 5000 feet. This heavy rain will create the possibility for land slides and debris flows, rapid river rises and urban and small stream flooding.
A change in the weather pattern will move into the region Thursday. A front will bring rain into the area Thursday. Showers will diminish a little Friday before a round of rain, heavy at times, moves in Friday night. Snow levels will lower to the Cascade passes and to the valley floors east of the Cascades late Saturday into Sunday.
Around round of snow is expected today into tonight. Dashed lines indicate precipitation arrival times (could be rain at lower west side elevations). Snow will create hazardous travel with slippery roads, snow–covered at times, especially after sunset and periods of poor visibility.
Moderate to heavy snow will impact southern Oregon and northern California tonight into Friday. Snow will be wet and heavy and could cause tree limbs/branches to break. Power outages are possible. Heaviest snow will fall in the mountains above 2000 feet, and could fall in the valleys on Friday night. Be prepared for snow-covered and slippery roads and reduced visibility. Roads affected will be I-5, US Highway 97, US Highway 395, Highway 3, Highway 62, Highway 140, and more.
High mountains are going to get feet of snow. Snow levels will lower sharply behind a cold front, starting Thursday morning, and mountain passes may see a period of moderate to heavy snow Thursday morning.
WIND ADVISORY REMAINS IN EFFECT FROM 11PM THIS EVENING TO 5PM PDT TUESDAY
A strong low pressure system will bring moderate to strong winds to the forecast area through Tuesday. Difficult travel is expected in some areas, especially for high-profile vehicles.
Winter Storm Warning / Winter Weather Advisory for Klamath Basin.
Snow and blowing snow. Additional snow accumulations of 4 to 6 inches, with localized amounts up to 12 inches are expected. Small hail and heavier snow are possible with thunderstorms this afternoon in Klamath and lake counties. Winds of 25 to 30 mph with gusts up to 45 mph are expected this afternoon and evening for much of the Klamath Basin.
Snow levels can fluctuate dramatically depending on many factors, including precipitation intensity. But, the bottom line is to be prepared for wintry travel mainly above 4000 feet today with snow possible all the way to west side valley floors again late Thursday into Friday.
The snow level drops to 2500 feet tonight with a period of moderate to heavy snow likely, especially along Interstate 5 near Mount Shasta and also in the mountains.
The next series of systems will bring some rain and snow to the west coast. The first system will arrive on Wednesday will bring 4000 foot snow levels with it, and those snow levels will begin to decrease on Thursday before falling to the valley floors by early Friday morning. The heaviest snowfall will be in the Cascades and the Marble mountains with a heavy dose of snow forecast for Mt. Shasta.
The active winter pattern is set to continue again this morning through tonight as the next system approaches the Pacific Northwest.
This means heavy snow with significant accumulations are likely over the Cascades, especially from around highway 140 north. Moderate to heavy snow is also expected over the Siskiyous, including Siskiyou Summit and highway 97 north of Chiloquin, but storm totals will be less than in the Cascades. Snow is expected to be heaviest from late this morning through this evening, then gradually tapering off tonight.
Another frontal system will move in from the northwest tonight through Saturday as the active wintry weather pattern continues.
Moderate to heavy snowfall is expected in the Oregon Cascades, with lighter amounts possible down to between 1,000 and 2,000 foot elevations. Snow levels are expected to range between 1,000 and 2,000 feet during this weather system with the bulk of the 1+ inch accumulations above 2000 feet.
The majority of the snowfall will occur during the day on Saturday. Roadways from Highway 140 near Lake of the Woods northward will see the greatest accumulations, but other roadways south of there, including portions of I-5, could see some light snowfall, as well.
Be prepared for periods of reduced visibility and slippery and snow covered roads. Be prepared for wintry travel conditions and be sure to check road conditions before venturing out.
Monitor the forecast closely for updates. It’s a good idea to have alternate travel plans if you want to avoid driving in wintry conditions.
Yet another low pressure system will move in from the north tonight into Thursday bringing snow to most of the area. Snow will arrive from northwest to southeast late tonight/early Thursday morning.
See the timelines in the graphic. Once again, the highest accumulations are likely to occur in the mountains, but also the passes along Interstate 5.
A burst of snow during the morning commute could also cause a period of reduced visibility and slippery, snow covered roads over the west side valleys. So, be prepared for wintry travel conditions and be sure to check road conditions before venturing out.
With the potential for poor weather and hazardous road conditions in the next several days the Oregon State Police (OSP) would like to remind motorists of winter travel safety tips.