Alert archive / Washington / Ice Storm Warnings in 2014

Ice Storm Warning 1, NWS Spokane, WA

December 4, 2014Chelan County, Douglas County, Grant County, Washington

NWS Spokane, WA issued this ice storm warning at Dec 4, 2014, 8:12 AM PST for Chelan County, Douglas County, Grant County, Washington. It took effect at Dec 4, 2014, 4:00 PM PST. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 4, 2014, 8:12 AM PST (16:12 UTC)
In effect from
Dec 4, 2014, 4:00 PM PST
Expired
Dec 4, 2014, 9:51 PM PST
In force
6 hr
Issued by
NWS Spokane, WA

Counties Chelan County, WA, Douglas County, WA, Grant County, WA

The radar

The Spokane radar (KOTX), 172 km from the middle of the area, began a volume at 16:12 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 4.2 hours before the alert went out and 264 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 2014-12-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2014-12-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
710 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
140 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

403 
WWUS46 KOTX 041612
WSWOTX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SPOKANE WA
812 AM PST THU DEC 4 2014

...A ROUND OF FREEZING RAIN THROUGH EARLY MORNING FOR SOUTHEAST
WASHINGTON AND SOUTHERN IDAHO PANHANDLE THIS MORNING... ...
ANOTHER ROUND OF FREEZING RAIN TONIGHT FOR MUCH OF THE INLAND
NORTHWEST...

.A WARM MOIST PACIFIC AIR MASS WILL CROSS INTO THE REGION TONIGHT
BRINGING THE POTENTIAL FOR RAIN ACROSS SOUTHEASTERN WASHINGTON
AND THE LOWER IDAHO PANHANDLE. TEMPERATURES OVER THE PALOUSE AND
PORTIONS OF THE LEWISTON...CLARKSTON VALLEY HAVE A GOOD CHANCE OF
BEING BELOW FREEZING THIS MORNING. BY LATE THIS MORNING OR EARLY
THIS AFTERNOON...MOST AREAS SHOULD WARM INTO THE LOWER TO MID 30S.
ANOTHER WET WEATHER SYSTEM WILL PUSH EAST OF THE CASCADES BY LATE
AFTERNOON AND EARLY EVENING SPREADING WIDESPREAD FREEZING RAIN
FROM THE WENATCHEE AREA EAST TO SPOKANE AND COEUR D'ALENE.

WAZ041-042-044-050015-
/O.UPG.KOTX.ZR.Y.0004.141205T0000Z-141205T1800Z/
/O.NEW.KOTX.IS.W.0001.141205T0000Z-141205T1800Z/
WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-WATERVILLE PLATEAU-
INCLUDING THE FOLLOWING LOCATIONS...WENATCHEE...CHELAN...ENTIAT...
CASHMERE...LEAVENWORTH...MAZAMA...TWISP...WINTHROP...STEHEKIN...
CONCONULLY...BLEWETT PASS...LOUP LOUP PASS...WATERVILLE...
MANSFIELD...BADGER MOUNTAIN ROAD
812 AM PST THU DEC 4 2014

...ICE STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 10 AM
PST FRIDAY...

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED AN ICE STORM
WARNING...WHICH IS IN EFFECT FROM 4 PM THIS AFTERNOON TO 10 AM
PST FRIDAY. THE FREEZING RAIN ADVISORY IS NO LONGER IN EFFECT.

* LOCATIONS...WENATCHEE...CHELAN...ENTIAT...CASHMERE... 
  LEAVENWORTH...MAZAMA...TWISP...WINTHROP...STEHEKIN...
  CONCONULLY... BLEWETT PASS...LOUP LOUP PASS...WATERVILLE...
  MANSFIELD...BADGER MOUNTAIN ROAD.

* ICE ACCUMULATIONS..ONE QUARTER INCH.

* TIMING...LIGHT FREEZING RAIN IS EXPECTED TO OCCUR TODAY THROUGH
  FRIDAY...HOWEVER THE MOST INTENSE INTERVAL OF FREEZING RAIN
  ACCUMULATION IS EXPECTED TONIGHT INTO EARLY FRIDAY MORNING.

* IMPACTS...LIGHT TO MODERATE FREEZING RAIN WILL LIKELY LEAD TO 
  TREACHEROUS TRAVEL CONDITIONS. SOME TREATED ROADS WILL BE 
  WET... WHILE OTHERS WILL BE ICE COVERED. MANY SIDE STREETS AND 
  PARKING LOTS WILL BE SLICK. BE ESPECIALLY CAREFUL DRIVING OVER 
  BRIDGES AND OVERPASSES. SIDEWALKS...PORCHES... STEPS...AND 
  DRIVEWAYS WILL GLAZE OVER QUICKLY.

* TEMPERATURES...IN THE MIDDLE 20S TO AROUND 30.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SIGNIFICANT ICE ACCUMULATIONS WILL
MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. IF YOU MUST TRAVEL...PACK A FLASHLIGHT...BLANKETS...
FOOD...AND WATER IN YOUR VEHICLE.

&&

$$

IDZ003-026-027-WAZ032-033-041800-
/O.CON.KOTX.ZR.Y.0003.000000T0000Z-141204T1800Z/
IDAHO PALOUSE-LEWISTON AREA-LEWIS AND SOUTHERN NEZ PERCE COUNTIES-
LOWER GARFIELD AND ASOTIN COUNTIES-WASHINGTON PALOUSE-
INCLUDING THE FOLLOWING LOCATIONS...MOSCOW...PLUMMER...POTLATCH...
GENESEE...LEWISTON...LAPWAI...CULDESAC...GIFFORD...CLARKSTON...
POMEROY...ALPOWA SUMMIT...PULLMAN...COLFAX...ROSALIA...
LA CROSSE...OAKESDALE...TEKOA...UNIONTOWN
812 AM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...

* LOCATIONS...LEWISTON...LAPWAI...CULDESAC...GIFFORD...MOSCOW... 
  PLUMMER...POTLATCH...GENESEE...PULLMAN...COLFAX...ROSALIA...LA 
  CROSSE...OAKESDALE...TEKOA...UNIONTOWN...CLARKSTON...POMEROY...
   ALPOWA SUMMIT.

* ICE ACCUMULATIONS...GENERALLY UNDER A TENTH OF AN INCH...BUT 
  ISOLATED SPOTS UP TO A TENTH OF AN INCH. LIGHT SNOW WILL ALSO 
  BE POSSIBLE.

* TIMING...PERIODS OF LIGHT FREEZING RAIN WILL BE POSSIBLE 
  THROUGH MID-MORNING. THERE COULD ALSO BE BRIEF LIGHT SNOW.

* IMPACTS...ROADWAYS MAY BE ICY WITH A DUSTING OF SNOW FOR THE 
  THIS MORNINGS COMMUTE CREATING TREACHEROUS TRAVEL CONDITIONS. 
  SOME TREATED ROADS WILL BE WET...WHILE OTHERS WILL BE ICE 
  COVERED. MANY SIDE STREETS AND PARKING LOTS WILL BE SLICK. BE 
  ESPECIALLY CAREFUL DRIVING OVER BRIDGES AND OVERPASSES. 
  SIDEWALKS...PORCHES... STEPS...AND DRIVEWAYS WILL GLAZE OVER 
  QUICKLY...SO WALKERS SHOULD BE VERY CAREFUL.

* TEMPERATURES...IN THE UPPER 20S TO LOWER 30S...WARMING ABOVE 
  FREEZING BY LATE MORNING.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

WAZ034-035-050015-
/O.CON.KOTX.ZR.Y.0004.141205T0000Z-141205T1500Z/
MOSES LAKE AREA-UPPER COLUMBIA BASIN-
INCLUDING THE FOLLOWING LOCATIONS...MOSES LAKE...EPHRATA...
OTHELLO...QUINCY...RITZVILLE...GRAND COULEE...ODESSA...WILBUR...
COULEE CITY
812 AM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 7 AM PST FRIDAY...

* LOCATIONS...RITZVILLE...GRAND COULEE...ODESSA...WILBUR...
  COULEE CITY...MOSES LAKE...EPHRATA...OTHELLO...QUINCY.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...LIGHT FREEZING RAIN WILL LIKELY DEVELOP LATE THIS 
  AFTERNOON OR EARLY THIS EVENING AND CONTINUE THROUGH THE 
  NIGHT. TEMPERATURES COULD WARM ABOVE FREEZING LATE TONIGHT 
  TURNING THE FREEZING RAIN TO ALL RAIN.

* IMPACTS...FREEZING RAIN COULD MAKE TRAVEL CONDITIONS HAZARDOUS 
  OVERNIGHT. THIS IS ESPECIALLY TRUE ON LESSER TRAVELED ROADS 
  AND BRIDGE DECKS.

* TEMPERATURES...GENERALLY IN THE UPPER 20S TO LOWER 30S.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

IDZ002-WAZ036-050015-
/O.CON.KOTX.ZR.Y.0004.141205T0000Z-141205T1200Z/
COEUR D'ALENE AREA-SPOKANE AREA-
INCLUDING THE FOLLOWING LOCATIONS...COEUR D'ALENE...POST FALLS...
HAYDEN...WORLEY...SPOKANE...CHENEY...DAVENPORT...ROCKFORD
812 AM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 4 AM PST FRIDAY...

* LOCATIONS...COEUR D'ALENE...POST FALLS...HAYDEN...WORLEY... 
  SPOKANE...CHENEY...DAVENPORT...ROCKFORD.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...THE FREEZING RAIN WILL LIKELY BEGIN LATE THIS 
  AFTERNOON OR EARLY THIS EVENING AND CONTINUE THROUGH AT LEAST 
  MIDNIGHT. TEMPERATURES COULD WARM ABOVE FREEZING LATE TONIGHT.

* IMPACTS...TRAVEL CONDITIONS COULD BECOME HAZARDOUS DURING THE 
  EVENING DUE TO ICE ACCUMULATIONS ON ROADS. THE WORST 
  CONDITIONS ARE EXPECTED ON SECONDARY AND LESSER TRAVELED 
  ROADS. WITH TEMPERATURES EXPECTED TO CLIMB TO OR ABOVE 
  FREEZING...CONDITIONS WILL LIKELY IMPROVE SLOWLY TOWARD 
  MORNING.

* TEMPERATURES...IN THE UPPER 20S TO LOWER 30S IN THE EVENING 
  WARMING INTO THE LOWER TO MIDDLE 30S LATE.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$
3 follow-up statements
102 
WWUS46 KOTX 041715
WSWOTX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SPOKANE WA
915 AM PST THU DEC 4 2014

A SECOND WET WEATHER SYSTEM WILL PUSH EAST OF THE CASCADES THIS
AFTERNOON AND EARLY EVENING SPREADING WIDESPREAD FREEZING RAIN
FROM THE WENATCHEE AREA EAST TO SPOKANE AND COEUR D'ALENE.

IDZ003-026-027-WAZ032-033-041815-
/O.CAN.KOTX.ZR.Y.0003.000000T0000Z-141204T1800Z/
IDAHO PALOUSE-LEWISTON AREA-LEWIS AND SOUTHERN NEZ PERCE COUNTIES-
LOWER GARFIELD AND ASOTIN COUNTIES-WASHINGTON PALOUSE-
915 AM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS CANCELLED THE
FREEZING RAIN ADVISORY.

A WINTRY MIX OF VERY LIGHT PRECIPITATION CONSISTING OF SNOW, RAIN,
AND FREEZING RAIN WILL OCCUR AT TIMES THROUGH THE DAY...HOWEVER
THE INTENSITY OF ICE ACCUMULATION FROM THE FREEZING RAIN HAS
DECREASED SUBSTANTIALLY...THEREFORE THE FREEZING RAIN ADVISORY HAS
BEEN CANCELLED.

$$

WAZ041-042-044-050115-
/O.CON.KOTX.IS.W.0001.141205T0000Z-141205T1800Z/
WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-WATERVILLE PLATEAU-
INCLUDING THE FOLLOWING LOCATIONS...WENATCHEE...CHELAN...ENTIAT...
CASHMERE...LEAVENWORTH...MAZAMA...TWISP...WINTHROP...STEHEKIN...
CONCONULLY...BLEWETT PASS...LOUP LOUP PASS...WATERVILLE...
MANSFIELD...BADGER MOUNTAIN ROAD
915 AM PST THU DEC 4 2014

...ICE STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON
TO 10 AM PST FRIDAY...

* LOCATIONS...GENERALLY SOUTH OF LAKE CHALAN WHICH WOULD INCLUDE
  THE CITIES OF ...WENATCHEE...CHELAN...ENTIAT...CASHMERE...
  LEAVENWORTH...STEHEKIN...WATERVILLE.

* ICE ACCUMULATIONS..ONE QUARTER INCH.

* TIMING...SOUTH OF LAKE CHELAN LIGHT FREEZING RAIN IS EXPECTED TO
  OCCUR TODAY THROUGH FRIDAY...HOWEVER THE MOST INTENSE INTERVAL
  OF FREEZING RAIN ACCUMULATION IS EXPECTED TONIGHT INTO EARLY
  FRIDAY MORNING. NORTH OF LAKE CHELAN JUST LIGHT SNOW IS EXPECTED
  WITH LITTLE OR NO FREEZING RAIN.

* IMPACTS...LIGHT TO MODERATE FREEZING RAIN WILL LIKELY LEAD TO 
  TREACHEROUS TRAVEL CONDITIONS. SOME TREATED ROADS WILL BE 
  WET... WHILE OTHERS WILL BE ICE COVERED. MANY SIDE STREETS AND 
  PARKING LOTS WILL BE SLICK. BE ESPECIALLY CAREFUL DRIVING OVER 
  BRIDGES AND OVERPASSES. SIDEWALKS...PORCHES... STEPS...AND 
  DRIVEWAYS WILL GLAZE OVER QUICKLY.

* TEMPERATURES...IN THE MIDDLE 20S TO AROUND 30.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SIGNIFICANT ICE ACCUMULATIONS WILL
MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. IF YOU MUST TRAVEL...PACK A FLASHLIGHT...BLANKETS...
FOOD...AND WATER IN YOUR VEHICLE.

&&

$$

WAZ034-035-050115-
/O.CON.KOTX.ZR.Y.0004.141205T0000Z-141205T1500Z/
MOSES LAKE AREA-UPPER COLUMBIA BASIN-
INCLUDING THE FOLLOWING LOCATIONS...MOSES LAKE...EPHRATA...
OTHELLO...QUINCY...RITZVILLE...GRAND COULEE...ODESSA...WILBUR...
COULEE CITY
915 AM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 7 AM PST FRIDAY...

* LOCATIONS...RITZVILLE...GRAND COULEE...ODESSA...WILBUR...
  COULEE CITY...MOSES LAKE...EPHRATA...OTHELLO...QUINCY.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...LIGHT FREEZING RAIN WILL LIKELY DEVELOP LATE THIS 
  AFTERNOON OR EARLY THIS EVENING AND CONTINUE THROUGH THE 
  NIGHT. TEMPERATURES COULD WARM ABOVE FREEZING LATE TONIGHT 
  TURNING THE FREEZING RAIN TO ALL RAIN.

* IMPACTS...FREEZING RAIN COULD MAKE TRAVEL CONDITIONS HAZARDOUS 
  OVERNIGHT. THIS IS ESPECIALLY TRUE ON LESSER TRAVELED ROADS 
  AND BRIDGE DECKS.

* TEMPERATURES...GENERALLY IN THE UPPER 20S TO LOWER 30S.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

IDZ002-WAZ036-050115-
/O.CON.KOTX.ZR.Y.0004.141205T0000Z-141205T1200Z/
COEUR D'ALENE AREA-SPOKANE AREA-
INCLUDING THE FOLLOWING LOCATIONS...COEUR D'ALENE...POST FALLS...
HAYDEN...WORLEY...SPOKANE...CHENEY...DAVENPORT...ROCKFORD
915 AM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 4 AM PST FRIDAY...

* LOCATIONS...COEUR D'ALENE...POST FALLS...HAYDEN...WORLEY... 
  SPOKANE...CHENEY...DAVENPORT...ROCKFORD.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...THE FREEZING RAIN WILL LIKELY BEGIN LATE THIS 
  AFTERNOON OR EARLY THIS EVENING AND CONTINUE THROUGH AT LEAST 
  MIDNIGHT. TEMPERATURES COULD WARM ABOVE FREEZING LATE TONIGHT.

* IMPACTS...TRAVEL CONDITIONS COULD BECOME HAZARDOUS DURING THE 
  EVENING DUE TO ICE ACCUMULATIONS ON ROADS. THE WORST 
  CONDITIONS ARE EXPECTED ON SECONDARY AND LESSER TRAVELED 
  ROADS. WITH TEMPERATURES EXPECTED TO CLIMB TO OR ABOVE 
  FREEZING...CONDITIONS WILL LIKELY IMPROVE SLOWLY TOWARD 
  MORNING.

* TEMPERATURES...IN THE UPPER 20S TO LOWER 30S IN THE EVENING 
  WARMING INTO THE LOWER TO MIDDLE 30S LATE.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$
911 
WWUS46 KOTX 042206
WSWOTX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SPOKANE WA
206 PM PST THU DEC 4 2014

A SECOND WET WEATHER SYSTEM WILL PUSH EAST OF THE CASCADES THIS
AFTERNOON AND EARLY EVENING SPREADING WIDESPREAD FREEZING RAIN
FROM THE WENATCHEE AREA EAST TO SPOKANE AND COEUR D'ALENE.

WAZ041-042-044-050615-
/O.CON.KOTX.IS.W.0001.141205T0000Z-141205T1800Z/
WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-WATERVILLE PLATEAU-
INCLUDING THE FOLLOWING LOCATIONS...WENATCHEE...CHELAN...ENTIAT...
CASHMERE...LEAVENWORTH...STEHEKIN...BLEWETT PASS...WATERVILLE...
MANSFIELD...BADGER MOUNTAIN ROAD
206 PM PST THU DEC 4 2014

...ICE STORM WARNING REMAINS IN EFFECT UNTIL 10 AM PST FRIDAY...

* LOCATIONS...WENATCHEE...CHELAN...ENTIAT...CASHMERE... 
  LEAVENWORTH...STEHEKIN...BLEWETT PASS...WATERVILLE...
  MANSFIELD... BADGER MOUNTAIN ROAD.

* ICE ACCUMULATIONS..ONE QUARTER INCH.

* TIMING...SOUTH OF LAKE CHELAN LIGHT FREEZING RAIN IS EXPECTED 
  TO OCCUR TODAY THROUGH FRIDAY...HOWEVER THE MOST INTENSE 
  INTERVAL OF FREEZING RAIN ACCUMULATION IS EXPECTED TONIGHT 
  INTO EARLY FRIDAY MORNING. NORTH OF LAKE CHELAN JUST LIGHT 
  SNOW IS EXPECTED WITH LITTLE OR NO FREEZING RAIN.

* IMPACTS...LIGHT TO MODERATE FREEZING RAIN WILL LIKELY LEAD TO 
  TREACHEROUS TRAVEL CONDITIONS. SOME TREATED ROADS WILL BE 
  WET... WHILE OTHERS WILL BE ICE COVERED. MANY SIDE STREETS AND 
  PARKING LOTS WILL BE SLICK. BE ESPECIALLY CAREFUL DRIVING OVER 
  BRIDGES AND OVERPASSES. SIDEWALKS...PORCHES... STEPS...AND 
  DRIVEWAYS WILL GLAZE OVER QUICKLY.

* TEMPERATURES...IN THE MIDDLE 20S TO AROUND 30.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ICE STORM WARNING MEANS SIGNIFICANT ICE ACCUMULATIONS WILL
MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS STRONGLY
DISCOURAGED. IF YOU MUST TRAVEL...PACK A FLASHLIGHT...BLANKETS...
FOOD...AND WATER IN YOUR VEHICLE.

&&

$$

IDZ003-WAZ033-050615-
/O.EXB.KOTX.ZR.Y.0004.141204T2206Z-141205T1200Z/
IDAHO PALOUSE-WASHINGTON PALOUSE-
INCLUDING THE FOLLOWING LOCATIONS...MOSCOW...PLUMMER...POTLATCH...
GENESEE...PULLMAN...COLFAX...ROSALIA...LA CROSSE...OAKESDALE...
TEKOA...UNIONTOWN
206 PM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY IN EFFECT UNTIL 4 AM PST FRIDAY...

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT UNTIL 4 AM PST FRIDAY.

* LOCATIONS...MOSCOW...PLUMMER...POTLATCH...GENESEE...PULLMAN... 
  COLFAX...ROSALIA...LA CROSSE...OAKESDALE...TEKOA...UNIONTOWN.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...LIGHT FREEZING RAIN HAS REDEVELOPED THIS AFTERNOON AND
  WILL CONTINUE THROUGH THE NIGHT. TEMPERATURES SHOULD WARM ABOVE
  FREEZING LATE TONIGHT TURNING THE FREEZING RAIN TO ALL RAIN.

* IMPACTS...FREEZING RAIN COULD MAKE TRAVEL CONDITIONS HAZARDOUS 
  OVERNIGHT. THIS IS ESPECIALLY TRUE ON LESSER TRAVELED ROADS 
  AND BRIDGE DECKS.

* TEMPERATURES...GENERALLY IN THE UPPER 20S TO LOWER 30S.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

WAZ034-035-050615-
/O.CON.KOTX.ZR.Y.0004.141205T0000Z-141205T1500Z/
MOSES LAKE AREA-UPPER COLUMBIA BASIN-
INCLUDING THE FOLLOWING LOCATIONS...MOSES LAKE...EPHRATA...
OTHELLO...QUINCY...RITZVILLE...GRAND COULEE...ODESSA...WILBUR...
COULEE CITY
206 PM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST
FRIDAY...

* LOCATIONS...RITZVILLE...GRAND COULEE...ODESSA...WILBUR...
  COULEE CITY...MOSES LAKE...EPHRATA...OTHELLO...QUINCY.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...LIGHT FREEZING RAIN WILL LIKELY DEVELOP LATE THIS 
  AFTERNOON OR EARLY THIS EVENING AND CONTINUE THROUGH THE 
  NIGHT. TEMPERATURES COULD WARM ABOVE FREEZING LATE TONIGHT 
  TURNING THE FREEZING RAIN TO ALL RAIN.

* IMPACTS...FREEZING RAIN COULD MAKE TRAVEL CONDITIONS HAZARDOUS 
  OVERNIGHT. THIS IS ESPECIALLY TRUE ON LESSER TRAVELED ROADS 
  AND BRIDGE DECKS.

* TEMPERATURES...GENERALLY IN THE UPPER 20S TO LOWER 30S.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

IDZ002-WAZ036-050615-
/O.CON.KOTX.ZR.Y.0004.141205T0000Z-141205T1200Z/
COEUR D'ALENE AREA-SPOKANE AREA-
INCLUDING THE FOLLOWING LOCATIONS...COEUR D'ALENE...POST FALLS...
HAYDEN...WORLEY...SPOKANE...CHENEY...DAVENPORT...ROCKFORD
206 PM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
FRIDAY...

* LOCATIONS...COEUR D'ALENE...POST FALLS...HAYDEN...WORLEY... 
  SPOKANE...CHENEY...DAVENPORT...ROCKFORD.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...THE FREEZING RAIN WILL LIKELY BEGIN LATE THIS 
  AFTERNOON OR EARLY THIS EVENING AND CONTINUE THROUGH AT LEAST 
  MIDNIGHT. TEMPERATURES COULD WARM ABOVE FREEZING LATE TONIGHT.

* IMPACTS...TRAVEL CONDITIONS COULD BECOME HAZARDOUS DURING THE 
  EVENING DUE TO ICE ACCUMULATIONS ON ROADS. THE WORST 
  CONDITIONS ARE EXPECTED ON SECONDARY AND LESSER TRAVELED 
  ROADS. WITH TEMPERATURES EXPECTED TO CLIMB TO OR ABOVE 
  FREEZING...CONDITIONS WILL LIKELY IMPROVE SLOWLY TOWARD 
  MORNING.

* TEMPERATURES...IN THE UPPER 20S TO LOWER 30S IN THE EVENING 
  WARMING INTO THE LOWER TO MIDDLE 30S LATE.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$
334 
WWUS46 KOTX 050551
WSWOTX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SPOKANE WA
951 PM PST THU DEC 4 2014

A SECOND WET WEATHER SYSTEM WILL PUSH EAST OF THE CASCADES... 
SPREADING WIDESPREAD FREEZING RAIN FROM THE WENATCHEE AREA EAST
TO SPOKANE AND COEUR D'ALENE.

WAZ041-042-044-051400-
/O.CAN.KOTX.IS.W.0001.000000T0000Z-141205T1800Z/
/O.EXB.KOTX.ZR.Y.0004.000000T0000Z-141205T1800Z/
WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-WATERVILLE PLATEAU-
INCLUDING THE FOLLOWING LOCATIONS...WENATCHEE...CHELAN...ENTIAT...
CASHMERE...LEAVENWORTH...STEHEKIN...BLEWETT PASS...WATERVILLE...
MANSFIELD...BADGER MOUNTAIN ROAD
951 PM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY IN EFFECT UNTIL 10 AM PST FRIDAY...
...ICE STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A FREEZING
RAIN ADVISORY...WHICH IS IN EFFECT UNTIL 10 AM PST FRIDAY. THE
ICE STORM WARNING HAS BEEN CANCELLED.

* LOCATIONS...WENATCHEE...CHELAN...ENTIAT...CASHMERE... 
  LEAVENWORTH...STEHEKIN...BLEWETT PASS...WATERVILLE...
  MANSFIELD... BADGER MOUNTAIN ROAD.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...SPOTTY SHOWERS OF FREEZING RAIN AND SNOW ARE EXPECTED
  THIS EVENING AND EARLY OVERNIGHT. STEADIER LIGHT FREEZING RAIN
  IS THEN EXPECTED LATE OVERNIGHT INTO FRIDAY MORNING ACROSS THE
  IMPACTED REGION.

* IMPACTS...TRAVEL CONDITIONS COULD BECOME HAZARDOUS OVERNIGHT AND
  EARLY FRIDAY. THE WORST CONDITIONS ARE EXPECTED ON SECONDARY AND
  LESSER TRAVELED ROADS. WITH TEMPERATURES EXPECTED TO CLIMB TO OR
  ABOVE FREEZING...CONDITIONS WILL LIKELY IMPROVE SLOWLY TOWARD
  MORNING.

* TEMPERATURES...IN THE UPPER 20S TO LOWER 30S.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

IDZ003-WAZ033-051200-
/O.CON.KOTX.ZR.Y.0004.000000T0000Z-141205T1200Z/
IDAHO PALOUSE-WASHINGTON PALOUSE-
INCLUDING THE FOLLOWING LOCATIONS...PLUMMER...ROSALIA...
LA CROSSE...OAKESDALE...TEKOA
951 PM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
FRIDAY...

* LOCATIONS...PLUMMER...ROSALIA...LA CROSSE...OAKESDALE...TEKOA.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...LIGHT FREEZING RAIN WILL CONTINUE THROUGH THE NIGHT
  OVER WEST AND NORTHERN WHITMAN COUNTY AND NORTHERN...EXTREME
  NORTHWEST LATAH AND WEST BENEWAH COUNTIES...BEFORE TEMPERATURES
  GRADUALLY WARM ABOVE FREEZING THROUGH FRIDAY MORNING.

* IMPACTS...FREEZING RAIN COULD MAKE TRAVEL CONDITIONS HAZARDOUS 
  OVERNIGHT. THIS IS ESPECIALLY TRUE ON LESSER TRAVELED ROADS 
  AND BRIDGE DECKS.

* TEMPERATURES...GENERALLY IN THE UPPER 20S TO LOWER 30S.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

WAZ034-035-051400-
/O.CON.KOTX.ZR.Y.0004.000000T0000Z-141205T1500Z/
MOSES LAKE AREA-UPPER COLUMBIA BASIN-
INCLUDING THE FOLLOWING LOCATIONS...MOSES LAKE...EPHRATA...
OTHELLO...QUINCY...RITZVILLE...GRAND COULEE...ODESSA...WILBUR...
COULEE CITY
951 PM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST
FRIDAY...

* LOCATIONS...RITZVILLE...GRAND COULEE...ODESSA...WILBUR...
  COULEE CITY...MOSES LAKE...EPHRATA...OTHELLO...QUINCY.

* ICE ACCUMULATIONS...A TENTH OF AN INCH OR LESS.

* TIMING...LIGHT FREEZING RAIN WILL FALL THROUGH THE NIGHT.
  TEMPERATURES COULD WARM ABOVE FREEZING LATE TONIGHT TURNING THE
  FREEZING RAIN TO ALL RAIN.

* IMPACTS...FREEZING RAIN COULD MAKE TRAVEL CONDITIONS HAZARDOUS 
  OVERNIGHT. THIS IS ESPECIALLY TRUE ON LESSER TRAVELED ROADS 
  AND BRIDGE DECKS.

* TEMPERATURES...GENERALLY IN THE UPPER 20S TO LOWER 30S.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

IDZ002-WAZ036-051200-
/O.CON.KOTX.ZR.Y.0004.000000T0000Z-141205T1200Z/
COEUR D'ALENE AREA-SPOKANE AREA-
INCLUDING THE FOLLOWING LOCATIONS...COEUR D'ALENE...POST FALLS...
HAYDEN...WORLEY...SPOKANE...CHENEY...DAVENPORT...ROCKFORD
951 PM PST THU DEC 4 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
FRIDAY...

* LOCATIONS...COEUR D'ALENE...POST FALLS...HAYDEN...WORLEY... 
  SPOKANE...CHENEY...DAVENPORT...ROCKFORD.

* ICE ACCUMULATIONS...AROUND A TENTH OF AN INCH.

* TIMING...THE FREEZING RAIN WILL CONTINUE THROUGH THE NIGHT IN
  MOST AREAS. HOWEVER AREAS BELOW 2000 FEET MAY CHANGE TO ALL RAIN
  TOWARD THE MIDDLE OVERNIGHT AS TEMPERATURES WARM ABOVE FREEZING.

* IMPACTS...TRAVEL CONDITIONS WILL BE HAZARDOUS. THE WORST
  CONDITIONS ARE EXPECTED ON SECONDARY AND LESSER TRAVELED ROADS.
  CONDITIONS WILL REMAIN SLIPPERY EVEN AFTER PRECIPITATION BEGINS
  TO WIND DOWN...ESPECIALLY IN THE OUTLYING AREAS...THROUGH THE
  EARLY MORNING COMMUTE.

* TEMPERATURES...IN THE UPPER 20S TO LOWER 30S IN THE EVENING 
  WARMING INTO THE LOWER TO MIDDLE 30S LATE.

* WEB PAGE: FOR A DETAILED VIEW OF THE HAZARD AREA VISIT 
  HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=OTX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN OR
FREEZING DRIZZLE WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE DRIVING.

&&

$$

What forecasters said that day

The local office's own words before this ice storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Spokane, WA wrote its last area forecast discussion before this ice storm warning went out at Dec 4, 5:03 AM PST, 3 hours 9 minutes earlier.

Area forecast discussion, Dec 4, 5:03 AM PST, 3 hours 9 minutes before
Area Forecast Discussion
National Weather Service Spokane WA
503 AM PST THU DEC 4 2014

.SYNOPSIS...
A series of storm systems will bring a wintry mix of precipitation
to the Pacific Northwest tonight and on through a good portion of
the weekend. A break in storm systems occurs Sunday but ends
quickly with more winter storms passing through as early as Sunday
night and continuing on through at least the early part of the
next workweek.

&&

.DISCUSSION...
...Widespread freezing rain likely across much of the Inland Northwest
during this period...

Today and tonight ... Two distinct systems to impact the Inland Northwest
during this period. The first is the weaker of the two and was
responsible for SW-NE oriented swath of precipitation extending
from the eastern Columbia Gorge and into the central Idaho
Panhandle. This feature will mainly impact the morning hours and
will have a difficult time moving much farther northward. The
precipitation scheme for this is rather complex based on above
freezing wedge of air sliding over shallow freezing layer at the
ground. Both Lewiston and Pullman have seen several hours of light
freezing rain with temperatures hovering just a touch below
freezing. Suspect both those locations will drift above freezing
later this morning as warmer air spills into the region from the
south-southwest. Not to mention the back edge of this band will
quickly exit the area before midday as the triggering shortwave
trough was located over NE Oregon per the latest water vapor
satellite imagery. Thus the current batch of freezing rain
advisories for the SE corner of Washington and adjacent portions
of the Idaho Panhandle look good. Farther north...toward the
Spokane and Coeur d'Alene area...the forecast is a little more
muddied since the warm nose of air above the ground is expected to
hold just south of the metro area. Consequently we'd expect to see
primarily a light snow event...however based on its close
proximity we would not be surprised to see the precipitation
briefly change over the freezing rain at times...with the best
chances over the southern metro area...and for locations such as
Cheney Rockford and Harrison.

The event for tonight looks like a much broader scale event as the
forcing will be considerably stronger (although still not a
powerhouse by any means). The 285-290k isentropic guidance shows a
much better setup with the winds increasing slightly from their
current state and becoming more perpendicular to the pressure
fields...implying more ascent in the lower atmosphere.
Meanwhile...the warm wedge of air aloft will continue to expand
farther northward...perhaps up to the Highway 2 (Washington)-I90
(Idaho) line and perhaps a little farther than that. This equates
to a widespread precipitation event...with light precipitation
over most portions of the forecast area...with moderate
precipitation possible near the Cascades as sub-tropical moisture
plume nears the crest during the late afternoon/overnight hours.
So here is a summary of what we expect to transpire tonight.

*Precipitation...all areas will see at least some light
 precipitation with amounts generally ranging from around a
 quarter inch of liquid in the Cascades south of Lake Chelan and
 anywhere from a few hundredths of an inch to up to two-tenths of
 an inch across the remainder of the forecast area. The NAM model
 is showing even more with amounts nearing a half inch overnight
 near the Cascades south of Lake Chelan...Wenatchee area...and
 Waterville Plateau. Confidence is HIGH that most areas will see
 precipitation. The threat of precipitation will begin to wane
 from south to north on Friday morning as the warm front continues
 to slide north.

*Precipitation type...This is where the forecast gets quite
 difficult. While the warm wedge aloft continues to expand
 northward through the night...its hard to determine just how far
 north it will make it...but confidence is greatest it will remain
 along the Highway 2 (WA)-I90 corridor (ID). More problematic is
 what will happen to the surface temperatures. There are decent
 indications that temperatures will rise to freezing or above late
 tonight across the Basin and Spokane/C'DA area which would turn
 the threat of freezing rain to just rain late. For cold-air
 damming locations such as the Cascades...Wenatchee area...and
 Waterville Plateau the odds are high that they won't rise above
 freezing suggesting a prolonged period of freezing rain.
 Accumulations could be significant. We will go with a freezing
 rain advisory for all these locations. Across the northern third
 of the forecast area...we are looking at primarily a light snow
 event. Confidence in this portion of the forecast is moderate to
 low for Spokane area and Basin and moderate to high for Wenatchee
 region. Confidence is also high for the snow areas. The threat of
 freezing rain would likely persist into Friday morning in the lee
 of the Cascades.

*Impacts...Travel conditions for the freezing rain areas could get
 quite bad overnight...but for the Basin and Spokane/Cd'A area
 things should improve by the morning commute time as temps slowly
 warm above freezing. For the Cascade/Wenatchee/Waterville
 Plateau...the glimmer of thawing is much smaller and the morning
 commute could be quite hazardous due to significant ice
 accumulations... Especially if the NAM model is right. Freezing
 rain advisories will be issued for these locations for
 tonight...and we could be faced with bonafide ice storm warnings
 if the NAM pans out. Confidence is lacking though as not many
 model solutions support a threat for moderate ice accumulations.
 For the northern zones...although travel won't be ideal...its
 more of a very light snow event than anything else with valley
 totals generally below an inch. fx

Friday through Sunday: A weak wave will exit the area Friday as a
shortwave ridge builds into the area. Cold air in place at the
surface with warmer air above will lead to a threat of freezing
rain. Main area of concern will stretch from the West Plains
around Spokane west through the Columbia Basin/Moses Lake area and
into the Waterville Plateau and Wenatchee/Leavenworth areas
through Friday morning. Temperatures will slowly warm through the
morning hours with the threat of freezing rain waning. Friday
night there is a bit of a lull before the next weather feature
moves through. The ridge will move east as a trough pushes into
the region Saturday. The models have backed off a bit on the
timing of the onset of rain. It now looks to be more of a Saturday
day event than a late Friday night early Sat morning event. By
Saturday evening the trough will exit the region and the chance of
precipitation will decrease. Another shortwave ridge builds into
the area for a dry Sunday. Temperatures through the weekend will
be mild, above average for this time of the year.

Monday through Tuesday Night: Both the GFS and ECMWF are in good
agreement of copious amounts of moisture streaming in from the
Pacific for at least the first part of the work week under broad
southwest flow. Have increased chance of precipitation north of a
line from Wenatchee to Lookout Pass starting Monday evening and
going through Tuesday evening. Both models have been consistent in
showing this area getting a good soaking. South of this line
though, the models differ on their solutions. So for now have kept
that area untouched in the forecast and will continue to show a
chance of rain. It looks as though precipitation will start out as
snow in the mountains with valley rain. Some northern valleys
(mainly the Methow) will still have cooler air in place and will
see a rain/snow mix during the evening, overnight and early
morning hours. This is quite a potent storm...the crest of the
cascade could see feet of snow...the forecast will have to be
monitored as potential winter highlights will be likely.

Wednesday and Thursday: The GFS and EC start to diverge...with the
GFS being more wet and the EC giving us a bit of a break. Given
the uncertainty kept with at or above climatology chance of
precipitation through the end of the forecast with above average
temperatures. /Nisbet

&&

.AVIATION...
12Z TAFS: Two fronts will result in poor aviation conditions
during this period. The first this morning will mainly impact PUW
and LWS with occasional -FZRA and IFR/MVFR cigs and vsbys. Farther
north at GEG SFF and COE the chances for precipitation are smaller
and there will be better chances for very light snow. There will
likely be a break in the action from 18z-00z for all
locations...then front 2 comes into play. This one will bring
precip to all sites...with rain for LWS and PUW and likely
MVFR/IFR cigs. The other sites will see a mess of conditions. EAT
will likely remain as freezing rain...while MWH GEG COE SFF will
see freezing rain changing to just rain overnight. Timing is
critical and far from a confident portion of the forecast.
Confidence is higher we will see MVFR/IFR cigs throughout. fx

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        32  29  39  33  40  32 /  50  70  50  20  90  10
Coeur d'Alene  31  29  41  34  41  34 /  70  70  50  10  90  10
Pullman        35  34  44  37  43  33 /  90  80  40  20 100  10
Lewiston       38  36  45  40  46  35 /  80  70  10  10  80  10
Colville       32  28  38  34  40  32 /  20  60  60  30  70  10
Sandpoint      30  30  38  33  40  33 /  40  80  60  10  80  20
Kellogg        31  31  39  34  38  34 / 100  90  80  20  90  30
Moses Lake     31  29  38  31  40  29 /  50  70  30  70  50   0
Wenatchee      31  29  38  34  40  30 /  60  80  50  70  40   0
Omak           28  25  35  32  38  26 /  10  60  70  60  50   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Freezing Rain Advisory until 10 AM PST this morning for Idaho
     Palouse-Lewis and Southern Nez Perce Counties-Lewiston Area.

     Freezing Rain Advisory from 4 PM this afternoon to 4 AM PST
     Friday for Coeur d'Alene Area.

WA...Air Stagnation Advisory until 4 AM PST Saturday for East Slopes
     Northern Cascades-Northeast Mountains-Okanogan Highlands-
     Okanogan Valley-Waterville Plateau-Wenatchee Area.

     Freezing Rain Advisory until 10 AM PST this morning for Lower
     Garfield and Asotin Counties-Washington Palouse.

     Freezing Rain Advisory from 4 PM this afternoon to 7 AM PST
     Friday for Moses Lake Area-Upper Columbia Basin.

     Freezing Rain Advisory from 4 PM this afternoon to 4 AM PST
     Friday for Spokane Area.

     Freezing Rain Advisory from 4 PM this afternoon to 10 AM PST
     Friday for East Slopes Northern Cascades-Waterville Plateau-
     Wenatchee Area.

&&
Hazardous weather outlook, Dec 4, 6:39 AM PST, 1 hour 33 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPOKANE WA
639 AM PST THU DEC 4 2014

IDZ001-WAZ037-038-043-051445-
NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS-
OKANOGAN VALLEY-
639 AM PST THU DEC 4 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO...
NORTH CENTRAL WASHINGTON AND NORTHEAST WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SEVERAL ROUNDS OF PRECIPITATION WILL MOVE THROUGH THE REGION
THROUGH THE WEEKEND. PRECIPITATION WILL START AS SNOW AND SLOWLY
TRANSITION TO RAIN BY THE WEEKEND. DURING THIS TRANSITION...A
WINTRY MIX OF SNOW...FREEZING RAIN...AND SLEET WILL BE POSSIBLE.
TRAVEL CONDITIONS ACROSS THE REGION WILL LIKELY BE IMPACTED BY
WINTRY WEATHER BEFORE WARMER TEMPERATURES RETURN DURING THE
WEEKEND.

IDZ002>004-026-027-WAZ031>036-041-044-051445-
COEUR D'ALENE AREA-IDAHO PALOUSE-CENTRAL PANHANDLE MOUNTAINS-
LEWISTON AREA-LEWIS AND SOUTHERN NEZ PERCE COUNTIES-
NORTHEAST BLUE MOUNTAINS-LOWER GARFIELD AND ASOTIN COUNTIES-
WASHINGTON PALOUSE-MOSES LAKE AREA-UPPER COLUMBIA BASIN-
SPOKANE AREA-WENATCHEE AREA-WATERVILLE PLATEAU-
639 AM PST THU DEC 4 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO...
NORTH CENTRAL IDAHO...CENTRAL WASHINGTON...EAST CENTRAL
WASHINGTON...NORTH CENTRAL WASHINGTON...NORTHEAST WASHINGTON AND
SOUTHEAST WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

LIGHT WINTRY PRECIPITATION WILL CONTINUE OVER SOUTHEAST WASHINGTON
AND ADJACENT PORTIONS OF THE IDAHO PANHANDLE THIS MORNING. THERE
WILL ANOTHER THREAT OF FREEZING RAIN MOVING ACROSS MUCH OF EASTERN
WASHINGTON AND THE CENTRAL IDAHO PANHANDLE LATE THIS AFTERNOON AND
TONIGHT. THE FREEZING RAIN COULD MIX WITH SLEET...SNOW OR RAIN
OVERNIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

MIXED WINTRY PRECIPITATION WILL CONTINUE INTO FRIDAY
MORNING...WITH ICY CONDITIONS POSSIBLE. THE PRECIPITATION WILL
LIKELY TRANSITION TO RAIN BY THE WEEKEND AS TEMPERATURES WARM
ABOVE FREEZING.

WAZ042-051445-
EAST SLOPES NORTHERN CASCADES-
639 AM PST THU DEC 4 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

FREEZING RAIN WILL BECOME LIKELY BY LATE AFTERNOON OR EARLY THIS
EVENING PRIMARILY SOUTH OF LAKE CHELAN. NORTH OF LAKE CHELAN THE
PRECIPITATION WILL GENERALLY FALL AS LIGHT TO MODERATE SNOW.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SEVERAL ROUNDS OF PRECIPITATION WILL CONTINUE THROUGH THE WEEKEND
AND INTO EARLY NEXT WEEK. EACH ROUND OF PRECIPITATION WILL SEE
INCREASING SNOW LEVELS SO ALL VALLEYS WILL EVENTUALLY TRANSITION
TO RAIN. MEANWHILE PERIODS OF MODERATE TO HEAVY SNOW ARE EXPECTED
OVER THE MOUNTAINS. THE PRECIPITATION WILL LIKELY CONTINUE THROUGH
THE MIDDLE OF NEXT WEEK.

The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 4, 4:48 AM PSTFreezing Rain AdvisoryOTXAdams, Chelan, Douglas, Ferry, Grant, Lincoln and 5 more54 hr

Nearby

Ice Storm Warnings in Washington, 2014Every ice storm warning in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.