SEVERAL WINTER WEATHER EVENTS ARE COMING NEXT WEEK… INCLUDING THE POSSIBILITY OF LOWLAND SNOW BEGINNING ABOUT WEDNESDAY.
FIRST UP IS SNOW IN THE MOUNTAINS SUNDAY NIGHT AND MONDAY MORNING. THE SNOW LEVEL WILL FALL TO AS LOW AS 1000 FEET… SO ALL MOUNTAIN PASSES WILL SEE SNOW. THE AMOUNTS LOOK LIKE THEY WILL BE IN THE ADVISORY RANGE… PERHAPS 6 TO 10 INCHES OVERNIGHT.
THE SECOND WINTER WEATHER EVENT IS A MUCH HEAVIER MOUNTAIN SNOWFALL PREDICTED FOR MONDAY NIGHT AND TUESDAY. STRONG WESTERLY FLOW ALOFT AND A MOIST AIR MASS WILL CREATE A CLASSIC HEAVY SNOW PRODUCING PATTERN FOR THE MOUNTAINS. ONE TO THREE FEET OF NEW SNOW IS POSSIBLE MONDAY NIGHT AND TUESDAY.
FINALLY… AND POSSIBLY OF MOST INTEREST… THERE IS A CHANCE OF LOWLAND SNOW BEGINNING ABOUT WEDNESDAY AND LASTING INTO THURSDAY NIGHT. A DEEP UPPER TROUGH WILL SETTLE OVER WESTERN WASHINGTON. PRECIPITATION WILL BE SHOWERY AND WILL DIMINISH BY THURSDAY. HOWEVER IT IS LIKELY THAT AT LEAST SOME OF THE PRECIPITATION WILL BE IN THE FORM OF SNOW. WITH HIGH TEMPERATURES IN THE 30S AND LOWS IN THE 20S… SOME OF THE SNOW WILL STICK.
THIS SNOWFALL IS STILL FOUR DAYS AWAY AND THE FORECAST COULD CHANGE. THE PRECIPITATION CURRENTLY LOOKS MORE SHOWERY IN THE MODELS RATHER THAN A WIDESPREAD SYNOPTIC SNOW EVENT. SHOWERS WOULD IMPLY A MORE HIT OR MISS SNOW EVENT. STILL… LOWLAND SNOW IS USUALLY A BIG EVENT AROUND WESTERN WASHINGTON… SO STAY INFORMED.
Another 2-5 inches of snow are possible in the greater Puget Sound area through Monday evening, but snow totals will be highly variable.
Winter Storm Warnings remain in effect for a wide area of Western Washington, including the greater Seattle Metro area until 10 p.m. Monday as a storm moves into the region combined with arctic air already entrenched.
Travelers should expect low visibility and potentially slick roads. The snow is expected to fall in spurts through around 10 p.m. then taper off toward midnight as the storm moves away.
In addition, winds are expected to increase into the evening, gusting as high as 20-30 mph, making for low visibilities.
The snow has caused several traffic problems around the Puget Sound area:
* I-5 and I-405 was snarled across much of the Seattle-Bellevue and Renton areas and it was particularly bad in the Tukwila area.
* The Seattle Department of Transportation has shut down the Alaskan Way Viaduct due to treacherous conditions.
*A semi jackknifed across I-5 South at S.188th in Tukwila around 3:30 p.m., briefly closing all lanes.
* A bus lost control and slid across the lanes of the Battery Street tunnel, closing the southbound lanes there
*SR-518 had to be closed near SR-99 to clear multiple spin-outs.
*The West Seattle Bridge was also a virtual parking lot as of 4:45 p.m. as slick roads made it difficult to get over the bridge.
* Side streets around Seattle were jammed as people tried to reach the freeways to get home.
Earlier in the day in Pierce County the eastbound lanes of SR-16 were closed just west of the Narrows Bridge due to numerous crashes, and a Pierce Transit bus rolled over on the UW Tacoma campus, injuring several passengers.
Multiple Weather Events In Play This Evening
A very complex weather situation is setting up as a very cold area of low pressure slides through Western Washington, with several major factors contributing to snow in the Seattle Metro area.
First up, a Convergence Zone is setting up shop right over the Seattle metro area. This is due to strong north winds from the Fraser Valley colliding with southerly winds being brought up by the passing storm. As the winds collide, it causes the air to rise and condense into clouds and, in this case, snow. Although this is not a classic Puget Sound Convergence Zone, which is when winds come west down the Strait of Juan de Fuca and turn south toward Everett as southerly winds collide. But the fact that winds are colliding is enough in this case, no matter where the northerly component is coming from. Convergence Zones can be great snow-makers and the Seattle area needs to be on guard as we could accumulate 1-4″ by the evening or more.
Second, the storm’s center is bringing its own moisture along for the ride, so expect enhanced snowfall for other areas outside of the Seattle Metro through the evening through about 5-6 p.m. These cells could bring 1-3″.
Third, cold winds continue to blast out of the Fraser River Valley, gusting as high as 50 mph and could strengthen to gusts of 60 mph this evening. At 4 p.m., Bellingham was 21 degrees with a 57 mph wind gust for a wind chill of -3. Friday Harbor reported blowing snow and gusts to 47 mph. A High Wind Warning remains in effect for western Whatcom County and the San Juan Islands through 4 a.m. Tuesday. A lesser Wind Advisory is in effect for Island County. western Skagit County and the Admiralty Inlet area for gusts to 50 mph.
This winds are running across the Salish Sea and into the eastern Strait of Juan de Fuca where they are running into the Olympic Mountains. This is the inverse rain shadow, per se, and this rising air is squeezing out all sorts of moisture along the northern Olympic Peninsula, where snow totals from Joyce to Port Townsend are reaching 6-12″ and more is falling.
Fourth, these strong winds will continue to filter south into the Puget Sound region later, meaning we’ll add gusty winds to the equation as high as 20-30 mph this evening, making for blowing snow a possibility.
Fifth — and this too is important — a very cold, unstable air mass is moving in behind this storm. If you thought it was chilly outside now, there is even colder air behind it. In addition, this storm briefly pulled up a little warm air from the south — thus the hail at Sea-Tac Airport earlier today and temperatures in Tacoma briefly warming into the mid 30s. But this “warm” air has added some fuel to the system and could cause stronger development of these individual cells.
Thus as we get later into the evening, the steady snows may taper off, but we’ll see these roaming snow showers and they could be quite intense, with thundersnow a possibility. This would be more in the 7-10 p.m. time frame. These cells will be random in nature and fairly compact, geographically, but where they strike, they could put down a few inches in a very short amount of time with whiteout conditions (plus the thundersnow). But a few miles away, it might be nothing. So all areas need to be prepared for intense snow showers through the late evening.
Temperatures will be below freezing through the event, with temperatures dropping as we head further toward midnight with lows gradually dropping to near 20.
When does the snow end?
Everything should taper off by 10 p.m. to midnight, with some individual snow showers/thundershowers possible through the night.
Watch the snow accumulate
Dr. Dale Ireland out in Silverdale had his camera rolling and, as tradition, used his original 2001 Ichiro bobblehead as a snow measuring device. Watch the snow accumulate today!
From Snow To Ice Box
As the night progresses and the storm continues to move south out of the region, even colder air will push into the Northwest. As we mentioned, lows Monday night will be in the upper teens to low 20s.
Tuesday will be dry but bitter cold, with breezy north winds continuing. Highs will not make it out of the 20s.
The National Weather Service noted that since 1985, we’ve only remained below freezing all day long in November just once in Seattle. Tuesday will mark the second day in a row.
A very bitterly cold night expected Tuesday night as lows drop to between 5 and 15 degrees, with some spots in Eastern Washington going well below zero.
We begin to warm up Wednesday a little, then closer to normal for Thanksgiving with a more old-fashioned rainy day. It might briefly start as snow, but won’t last long.
Seattle Colder Than Barrow, Alaska
Just how cold is it in Seattle? Afternoon temperatures were around 28 degrees. Meanwhile, up in the northern reaches of Alaska, Barrow reported a high of 34 degrees Monday. But that is all related. A very large ridge of high pressure has built into Alaska, shoving the jet stream way to the northern arctic reaches. The jet is then diving back down the east side of that ridge into the Pacific Northwest — in essence creating a conduit for air from the Arctic Circle to channel south into our area.
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URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICESEATTLE WA
937 AM PST MON NOV 22 2010
WAZ505-507>509-511-230200-
/O.UPG.KSEW.WW.Y.0016.000000T0000Z-101123T0300Z/
/O.NEW.KSEW.WS.W.0008.101122T1737Z-101123T0600Z/
EAST PUGET SOUND LOWLANDS-EVERETT AND VICINITY-
SEATTLE/BREMERTON AREA-TACOMA AREA-HOOD CANAL AREA-
937 AM PST MON NOV 22 2010
...WINTER STORM WARNING IN EFFECT UNTIL 10 PM PST THIS EVENING
FOR THE SEATTLE...TACOMA...EVERETT METRO AREAS INCLUDING THE HOOD
CANAL AREA...THE KITSAP PENINSULA AND THE EASTERN PUGET SOUND
LOWLANDS...
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WINTER STORM
WARNING FOR THE SEATTLE...TACOMA...EVERETT METRO AREAS INCLUDING THE HOOD
CANAL AREA...THE KITSAP PENINSULA AND THE EASTERN PUGET SOUND
LOWLANDS FOR HEAVY SNOW...WHICH IS IN EFFECT UNTIL 10 PM PST THIS
EVENING. THE WINTER WEATHER ADVISORY FOR THIS AREA IS NO LONGER
IN EFFECT.
* SOME AFFECTED LOCATIONS...EVERETT...GOLD BAR...SEATTLE... NORTH
BEND...BREMERTON...SHELTON...TACOMA...AND ENUMCLAW.
* TIMING...BANDS OF SNOW WILL INCREASE THROUGH THE EARLY AFTERNOON
AND CONTINUE INTO THE EVENING HOURS. THE SNOW WILL END LATER
THIS EVENING FROM THE NORTH...BUT SOME DRIFTING OF THE SNOW IS
LIKELY TONIGHT AS NORTHERLY WINDS INCREASE TO 20 TO 30 MPH AND
GUSTS TO 40 MPH.
* ACCUMULATIONS...EXPECT 2 TO 6 INCH AMOUNTS. SNOWFALL
ACCUMULATIONS WILL BE QUITE VARIABLE AROUND THE AREA WITH
HEAVIEST AMOUNTS OCCURRING CLOSER TO THE CASCADE FOOTHILLS AND
IN LOCALIZED BANDS AROUND THE CENTRAL PUGET SOUND AREA.
* WIND...LIGHT AND VARIABLE WINDS THROUGH MID AFTERNOON WILL
BECOME NORTH AND INCREASE TO 20 TO 30 MPH WITH GUSTS TO 40 MPH
THIS EVENING. THE GUSTY NORTH WINDS TONIGHT WILL CAUSE SOME
BLOWING AND DRIFTING OF THE SNOW. THE COMBINATION OF THE STRONG
WIND AND TEMPERATURES FALLING INTO THE LOWER 20S WILL GIVE WIND
CHILL VALUES OF 0 TO 10 DEGREES ABOVE ZERO TONIGHT.
* IMPACT...GUSTY WINDS NEAR 40 MPH COULD RESULT IN LOCAL POWER
OUTAGES...THUS CONSIDER ALTERNATE...BUT SAFE...SOURCES OF
HEAT IN CASE THIS OCCURS. OTHERWISE MAKE SURE YOU HAVE
PLENTY OF EXTRA WARM CLOTHING OR BLANKETS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNINGS MEANS SEVERE WINTER WEATHER IS OCCURRING
OR IMMINENT. THOSE PLANNING TRAVEL IN THE WARNED AREA SHOULD BE
PREPARED FOR HAZARDOUS...WINTER DRIVING CONDITIONS AND PLAN
ACCORDINGLY.
&&
$$
Monday night’s windstorm is expected to give way to mountain snow today, and weather forecasters predict colder temperatures and a chance of snow showers in the Western Washington lowlands by the weekend. The windstorm caught many by surprise, blowing through the region after darkness fell. Gusts as high as 50 mph blew down trees and branches in some areas, tore boathouses loose at local marinas and knocked out power to thousands of homes and business across South King, Pierce and Thurston counties.
JOE BARRENTINE/staff photographer Metro Parks' Mike Lange and his team work to remove a Jefferson Park tree from North Seventh Street after it blew over during a windstorm Monday, Nov. 15, 2010. Three large trees and several smaller trees were knocked over by the winds. Joe Barrentine/Staff photographer.
Monday night’s windstorm is expected to give way to mountain snow today, and weather forecasters predict colder temperatures and a chance of snow showers in the Western Washington lowlands by the weekend.
Accumulations, if any, are expected to be light at the lower elevations, but the National Weather Service office in Seattle advised people to take precautions.
“Now would be a good time to think about how you could prepare for the first possibility of winter weather conditions in the lowlands,” according to a “special weather statement” issued Tuesday. “Are your tires ready for snow-covered roads? Are you outdoor pipes and faucets winterized?”
Monday’s windstorm caught many by surprise, blowing through the region after darkness fell.
Weather Service forecaster Johnny Berg said a strong cold front moved onshore north of Seattle, bringing stiff winds and rain but nothing atypical.
“It was a typical storm that we get every winter,” Berg said.
Still, the storm packed a wallop.
Gusts as high as 50 mph blew down trees and branches in some areas, tore boathouses loose at local marinas and knocked out power to thousands of homes and business across South King, Pierce and Thurston counties.
There was a report of a tree crashing through the living room of an Anderson Island family.
A patrol boat owned by the Pierce County Sheriff’s Department sustained damage after the boathouse it’s stored in collapsed. The 32-foot boat is inoperable pending repairs, the county reported.
Patrick Malone spent Tuesday morning trying to free his 43-foot cabin cruiser, which was trapped after a boathouse at Narrows Marina collapsed in the winds.
“The boat’s still floating good, but it’s scraped up,” Malone said.
The wind knocked over dozens of empty containers at the Port of Tacoma. Port spokeswoman Tara Mattina said wind-toppled containers are not unusual since they’re stacked three high.
“It can ding them up. (Workers will) be assessing them for any damage,” she said.
The storm didn’t affect much at the port, Mattina said. It had no power issues that she was aware of.
“We actually had a ship in, last night, unloading in the storm,” she said. The cranes that lift things off the ships have an alarm that goes off when gusts reach 45 mph. The gusts were about 40 mph, so workers kept at it.
Schools were either closed or delayed across the region. The Clover Park School District cancelled classes as did the North Thurston School District.
Many subscribers to the The News Tribune and The Olympian newspapers were without their papers Tuesday morning after the TNT lost power shortly before 9 p.m. Monday.
Subscribers who missed their papers can expect both their Tuesday editions and Wednesday editions on Wednesday.
No injuries were reported.
Many folks without power sought refuge at local restaurants or stores Tuesday morning.
Susan Yockman of Burs Restaurant in Lakewood said the eatery was doing twice its normal Tuesday morning business as storm refugees sought breakfast and coffee.
“Bacon and eggs are popular,” Yockman said.
People with business in Eastern Washington should prepare for winter driving conditions in the Cascades.
The Weather Service was calling for accumulations of up to 20 inches of snow in the mountains tonight and early Wednesday morning.
The lowlands around Tacoma can expect rain and breezy conditions until Saturday, when temperatures are expected to drop into the 30s and bring a chance of snow.
Staff writer Kathleen Cooper contributed to this report.
Within an hour of lightning flashing across the night sky and winds gusting above 40 mph, Tacoma firefighters had responded to more than 30 calls. Trees crashed into houses, trapping at least one family.
Heavy limbs tumbled onto cars. The department received a report of a boathouse that had broken loose.
Blown transformers and downed power lines started several tiny fires in trees and at least one car. Roads were blocked by falling debris, and some motorists had to drive on the wrong side of the road to get through.
A Tacoma Power spokeswoman said at least 54,000 customers were plunged into darkness throughout Tacoma, Lakewood and Frederickson, but that the number was likely much higher.
“I can’t even get a customer count because more and more keeping coming down,” said spokeswoman Chris Gleason.
The widespread power outages forced the city to use backup generators. While dispatch centers were out of commission, 911 operators remained available to take calls.
“We’re still able to conduct business, but because of the storm it’s more complicated,” said Tacoma Fire Department spokesman Joe Meinecke.
Emergency responders worked in a frenzy, trying to juggle multiple calls and stretch resources to respond to all the reported mayhem.
The storm was expected to begin tapering off early this morning, but another front is supposed to move in Wednesday night, bringing back light rain and strong winds.
“These aren’t exceptionally high winds, but it is certainly windy,” said Doug McDonal, a meteorologist with the National Weather Service.
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