765 
WWUS46 KPQR 182050
WSWPQR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Portland OR
150 PM PDT Tue Mar 18 2025

.Two back-to-back winter systems will move over the region through 
Saturday morning. The first will arrive late Wednesday through 
Thursday. This system will bring snow to the Cascades and breezy 
winds. The second system will arrive on Friday. This frontal passage 
is warmer but will continue to be evaluated in regards to future 
advisories or warnings.

ORZ126>128-191215-
/O.CAN.KPQR.WW.Y.0015.000000T0000Z-250319T0000Z/
/O.UPG.KPQR.WS.A.0005.250320T0000Z-250322T0600Z/
/O.NEW.KPQR.WW.Y.0016.250320T0000Z-250321T0000Z/
North Oregon Cascades-Cascades of Marion and Linn Counties-
Cascades of Lane County-
Including the cities of Timothy Lake, Lost Lake, Waldo Lake,
Willamette Pass, Breitenbush Springs, Bennett Pass, Tombstone
Summit, Santiam Pass, Santiam Junction, McKenzie Pass, and
Government Camp
150 PM PDT Tue Mar 18 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM WEDNESDAY TO 5 PM PDT 
THURSDAY...

* WHAT...Snow expected. Total snow accumulations up to 10 to 12 
  inches. Up to 17 inches above 5500 feet. Winds gusting as high as 
  35 mph.

* WHERE...Northern and Central Oregon Cascades.

* WHEN...From 5 PM Wednesday to 5 PM PDT Thursday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous.

* ADDITIONAL DETAILS...There is around a 20% chance that snow 
  accumulation would exceed 12 inches at elevations above 4000 feet. 
  For this scenario to occur, colder air would need to be present 
  than what is forecast. This first system will be closely followed 
  by a second frontal system so there may be minimal break between 
  them.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Have a winter emergency driving kit readily available. Common items 
to include: flashlight, batteries, blankets, a shovel, water, 
non-perishable food items, tire chains, etc.

Be aware that walking surfaces may be slick. Walk with extra care.

For the latest road conditions and chain restrictions in Oregon, 
call 5 1 1, or visit: www.tripcheck.com.

For the latest road conditions and chain restrictions in Washington, 
visit: wsdot.com/travel/real-time/map

&&

$$

WAZ211-191215-
/O.UPG.KPQR.WS.A.0005.250320T0000Z-250322T0600Z/
/O.NEW.KPQR.WW.Y.0016.250320T0000Z-250321T0000Z/
South Washington Cascades-
Including the cities of Mt. St. Helens, Larch Mountain, and
Indian Heaven Wilderness
150 PM PDT Tue Mar 18 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM WEDNESDAY TO 5 PM PDT 
THURSDAY...

* WHAT...Snow expected. Total snow accumulations up to 11 inches.

* WHERE...South Washington Cascades.

* WHEN...From 5 PM Wednesday to 5 PM PDT Thursday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous.

* ADDITIONAL DETAILS...There is around a 20% chance that snow 
  accumulation would exceed 12 inches at elevations above 4000 feet. 
  For this scenario to occur, colder air would need to be present 
  than what is forecast. This first system will be closely followed 
  by a second frontal system so there may be minimal break between 
  them.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Have a winter emergency driving kit readily available. Common items 
to include: flashlight, batteries, blankets, a shovel, water, 
non-perishable food items, tire chains, etc.

Be aware that walking surfaces may be slick. Walk with extra care.

For the latest road conditions and chain restrictions in Oregon, 
call 5 1 1, or visit: www.tripcheck.com.

For the latest road conditions and chain restrictions in Washington, 
visit: wsdot.com/travel/real-time/map

&&

$$

For more information from the National Weather Service visit 
www.weather.gov/portland

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