A winter weather advisory from the National Weather Service advises that we should expect snow to imapct travel, starting late tonight. Here's their advisory:

URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE SPOKANE WA

322 AM PST MON DEC 19 2016

...MODERATE SNOW IS EXPECTED TODAY...WITH MODERATE TO HEAVY SNOW

EXPECTED TONIGHT AND TUESDAY...

.A PAIR OF WINTER STORM SYSTEMS WILL MOVE INTO THE REGION ON

MONDAY...WITH A SECOND FOLLOWING CLOSE BEHIND LATE MONDAY NIGHT

AND TUESDAY. FORECAST CONFIDENCE IS HIGH THAT REGION WILL SEE

ENOUGH SNOW TO IMPACT TRAVEL ACROSS THE MOUNTAIN VALLEYS AS WELL

AS THE MONDAY AND TUESDAY.

IDZ002-003-WAZ033-035-036-192100-

/O.NEW.KOTX.WW.Y.0039.161220T0400Z-161220T1300Z/

COEUR D`ALENE AREA-IDAHO PALOUSE-WASHINGTON PALOUSE-

UPPER COLUMBIA BASIN-SPOKANE AREA-

322 AM PST MON DEC 19 2016

...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO

5 AM PST TUESDAY...

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A WINTER

WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 8 PM THIS

EVENING TO 5 AM PST TUESDAY.

* LOCATIONS...COEUR D`ALENE, POST FALLS, HAYDEN, MOSCOW, PULLMAN,

ROSALIA, GRAND COULEE, ODESSA, WILBUR, COULEE CITY, SPOKANE,

DAVENPORT, AND ROCKFORD.

* ICE ACCUMULATIONS...UP TO ONE QUARTER OF AN INCH BETWEEN ODESSA

AND MOSES LAKE.

* SNOW ACCUMULATIONS...2 TO 4 INCHES FOR SPOKANE...COEUR

D`ALENE...DAVENPORT...AND COULEE CITY. 1 TO 3 INCHES FOR PULLMAN

AND MOSCOW.

* TIMING...SNOW IS EXPECTED TO DEVELOP LATE THIS EVENING AND

BECOME HEAVY DURING THE EARLY MORNING HOURS. A TRANSITION FROM

SNOW TO RAIN WILL BE POSSIBLE EARLY WEDNESDAY MORNING OVER THE

PALOUSE AND PORTIONS OF THE COLUMBIA BASIN SOUTH OF INTERSTATE

90.

* IMPACTS...SNOW COVERED ROADS WILL MAKE TRAVEL TREACHEROUS. ICE

ACCUMULATIONS IN THE ODESSA AND MOSES LAKE AREAS WILL HAVE THE

POTENTIAL TO MAKE DRIVING ESPECIALLY HAZARDOUS TUESDAY NIGHT

INTO WEDNESDAY MORNING.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT

HTTP://WWW.WRH.NOAA.GOV/MAP/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW

WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW

COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE

DRIVING.