Heavy snow and blowing snow expected. Total snow accumulations of 6 to 12 inches, with localized amounts up to 16 inches, are expected. Snow fall rates will increase again late this morning. Additional amounts of 6 to 10 inches, with localized amounts up to 14 inches, are expected.
Strong low pressure will move into the coast on Saturday and this will produce very strong winds over much of the east side and northern California. The strongest winds will be in the mountains and Shasta Valley, but east side valley locations will also see strong, gusty winds Saturday afternoon and evening.
The National Weather Service in Medford has issued an Air Stagnation Advisory which is in effect from 1 AM Tuesday to 10 PM PST Thursday. Air quality is expected to gradually deteriorate due to limited vertical mixing Tuesday through Friday morning as airborne particulates accumulate.
Light to moderate snow showers expected today and tonight in and just east of the Southern Oregon Cascades, then a strong low will bring periods moderate to locally heavy snow. Periods of moderate snow showers are expected today and tonight with snow levels around 4500 to 5000 feet.
Multiple Systems to bring extended period of steady snow accumulations.
Beginning late this afternoon into this evening, another system will bring more precipitation to the area with snow levels around 4500 feet. Another system will follow Sunday and a stronger system on Monday. Snow levels will hover around 4500 feet during this time period, resulting in an extended period of relatively steady snow accumulations. Impacts could be more significant due to increased traffic from holiday travel.
National Weather Service, Medford Oregon has issued a Winter Weather Advisory for areas of the Cascade Mountains through 10:00PM Today, December 20, 2018. NWS has also issued a High Wind Advisory for the Klamath Basin for the same period.
Another frontal system will bring moderate to strong winds to the coast this evening, the Shasta Valley tonight and some areas east of the Cascades late Tuesday morning.
The National Weather Service in Medford has replaced the High Wind Watch with a High Wind Warning...which is in effect from 10 AM to 10 PM PST Tuesday. A Wind Advisory has also been issued.
This Wind Advisory is in effect from 10 AM to 10 PM PST Tuesday.
The National Weather Service in Medford has issued a High Wind Warning. Which is in effect from 10 PM this evening to 10 PM PST Sunday.
Freezing Fog Advisory through 8:00 AM Tuesday - Areas of freezing fog are expected in valleys and over some mountain locations this evening through early Tuesday morning. Freezing fog may be dense at times with visibility of less than a quarter mile.
For the first time in the 2018-19 winter snow season, several inches of snow has blanketed the Klamath Basin and continues to fall at the time of this update. Reports are coming in from various points in the Basin, ranging from 3 to 6 inches of the freshly fallen snow.
Friday evening through Saturday a strong cold front and associated area of cold low pressure will move in from the northwest bringing periods of heavy snowfall with lower snow levels across portions of southwest Oregon and northern California. Snow levels could drop briefly below 2500 feet in heavier showers.
Snow and blowing snow expected with wind gusts to 60 mph possible. Localized heavy snow and white out conditions possible. Total snow accumulations of 4 to 8 inches, with localized amounts up to 10 inches.
High Wind Watch Remains in Effect from Thursday Morning through Late Thursday Night.
Locations Include: Adin, Davis Creek, Tulelake, Bonanza, Modoc Point, including portions of highways 97, 395, 140, 39, and 139.
Most of us will see rain over the next three days. If you are traveling over the higher Cascades passes, you could encounter some snow Wednesday through Friday. Most of the snow will fall during the evening hours of Thanksgiving Day. Places likes Crater Lake and Mt Ashland will likely see snow with the incoming weather systems.
The weather will cooperate for a majority of those traveling by road or air for the Thanksgiving holiday, with some exceptions in the northeastern and western United States. However, a pattern change will bring needed rainfall and possibly mountain snow to the west coast starting on Wednesday.
The National Weather Service in Medford has issued an Air Stagnation Advisory which is in effect until 4:00 AM PST Saturday. Areas include valleys of Klamath and Lake Counties.
The National Weather Service in Medford has issued an Air Stagnation Advisory...which is in effect until noon PST Saturday. Areas include valleys of Douglas, Josephine, Jackson, Klamath and Lake Counties.
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.