National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FWUS46 KPDT 212156
SAGPDT

AVALANCHE GUIDANCE
NATIONAL WEATHER SERVICE PENDLETON OR
256 PM PDT TUE MAY 21 2013

ORZ050-221300-
WALLOWA MOUNTAINS 8000 TO 9000 FEET-
256 PM PDT TUE MAY 21 2013

.TONIGHT...NUMEROUS SNOW SHOWERS AND ISOLATED THUNDERSTORMS IN THE
EVENING...THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. SNOW
ACCUMULATION AROUND 1 INCH. WEST WINDS 10 TO 15 MPH. LOWS 20 TO 27.
.WEDNESDAY...SNOW SHOWERS LIKELY IN THE MORNING...THEN MOSTLY CLOUDY
WITH CHANCE OF SNOW SHOWERS IN THE AFTERNOON. SNOW ACCUMULATION
AROUND 1 INCH. SOUTHWEST WINDS AROUND 10 MPH SHIFTING TO THE
SOUTHEAST IN THE AFTERNOON. HIGHS 26 TO 33.
.WEDNESDAY NIGHT...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS.
SOUTHWEST WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS
20 TO 27.
.THURSDAY...CHANCE OF SNOW SHOWERS IN THE MORNING...THEN SNOW
SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
SNOW ACCUMULATION UP TO 1 INCH. LIGHT WINDS BECOMING EAST AROUND
10 MPH IN THE AFTERNOON. HIGHS 29 TO 36.
.THURSDAY NIGHT...SNOW SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING...THEN SNOW SHOWERS LIKELY AFTER
MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. NORTH WINDS AROUND 10 MPH.
LOWS 20 TO 27.
.FRIDAY...SNOW SHOWERS LIKELY. SNOW ACCUMULATION AROUND 1 INCH.
LIGHT WINDS BECOMING SOUTHWEST 10 TO 15 MPH IN THE AFTERNOON. HIGHS
33 TO 40.

$$

ORZ050-221300-
SALT CREEK AREA 5000 TO 7000 FEET-
256 PM PDT TUE MAY 21 2013

.TONIGHT...NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS IN THE
EVENING...THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. SNOW
ACCUMULATION UP TO 1 INCH. SOUTHEAST WINDS AROUND 10 MPH SHIFTING TO
THE NORTHWEST AFTER MIDNIGHT. LOWS 22 TO 29.
.WEDNESDAY...SNOW SHOWERS LIKELY IN THE MORNING...THEN MOSTLY CLOUDY
WITH CHANCE OF SNOW SHOWERS IN THE AFTERNOON. SNOW ACCUMULATION UP
TO 1 INCH. LIGHT WINDS BECOMING SOUTH AROUND 10 MPH IN THE
AFTERNOON. HIGHS 36 TO 43.
.WEDNESDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE
EVENING...THEN SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. SOUTH
WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS 20 TO 27.
.THURSDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW SHOWERS IN THE
MORNING...THEN CHANCE OF SHOWERS...SNOW SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. LITTLE OR NO SNOW ACCUMULATION.
LIGHT WINDS BECOMING SOUTHEAST AROUND 10 MPH IN THE AFTERNOON. HIGHS
43 TO 49.
.THURSDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SHOWERS...SNOW SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING...THEN CHANCE OF
SNOW SHOWERS AFTER MIDNIGHT. LITTLE OR NO SNOW ACCUMULATION. NORTH
WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS 23 TO 30.
.FRIDAY...CLOUDY WITH CHANCE OF SHOWERS. LIGHT WINDS BECOMING
SOUTHWEST AROUND 10 MPH IN THE AFTERNOON. HIGHS 42 TO 49.

$$

ORZ050-062-221300-
CLEAR CREEK AREA 6000 TO 8000 FEET-
256 PM PDT TUE MAY 21 2013

.TONIGHT...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS IN THE
EVENING...THEN NUMEROUS SNOW SHOWERS AND SHOWERS AFTER MIDNIGHT.
SNOW ACCUMULATION UP TO 1 INCH. NORTHWEST WINDS AROUND 10 MPH IN THE
EVENING BECOMING LIGHT. LOWS 21 TO 28.
.WEDNESDAY...CLOUDY IN THE MORNING THEN BECOMING MOSTLY CLOUDY.
CHANCE OF SNOW SHOWERS. SNOW ACCUMULATION UP TO 1 INCH. LIGHT WINDS
BECOMING SOUTH AROUND 10 MPH IN THE AFTERNOON. HIGHS 30 TO 37.
.WEDNESDAY NIGHT...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS.
SOUTHWEST WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS
20 TO 27.
.THURSDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS IN THE
MORNING...THEN CLOUDY WITH CHANCE OF SNOW SHOWERS...SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. NORTHEAST WINDS
AROUND 10 MPH. HIGHS 37 TO 44.
.THURSDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SHOWERS...SNOW SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING...THEN CHANCE OF
SNOW SHOWERS AND SHOWERS AFTER MIDNIGHT. LITTLE OR NO SNOW
ACCUMULATION. NORTH WINDS AROUND 10 MPH. LOWS 23 TO 30.
.FRIDAY...CLOUDY. CHANCE OF SNOW SHOWERS AND SHOWERS IN THE
MORNING...THEN CHANCE OF SNOW SHOWERS...SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. SNOW ACCUMULATION UP TO 1 INCH.
LIGHT WINDS BECOMING SOUTH AROUND 10 MPH IN THE AFTERNOON. HIGHS
41 TO 47.

$$

ORZ050-062-221300-
CATHERINE CREEK AREA 6000 TO 8000 FEET-
256 PM PDT TUE MAY 21 2013

.TONIGHT...NUMEROUS SHOWERS...SNOW SHOWERS AND ISOLATED
THUNDERSTORMS IN THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER
MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. WEST WINDS AROUND 10 MPH.
LOWS 21 TO 28.
.WEDNESDAY...CLOUDY IN THE MORNING THEN BECOMING MOSTLY CLOUDY.
CHANCE OF SNOW SHOWERS. SNOW ACCUMULATION UP TO 1 INCH. SOUTHWEST
WINDS AROUND 10 MPH. HIGHS 30 TO 37.
.WEDNESDAY NIGHT...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS.
SOUTHWEST WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS
22 TO 29.
.THURSDAY...MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE MORNING...
THEN CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE
AFTERNOON. HIGHS 35 TO 42.
.THURSDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS...SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING...THEN CHANCE OF
SNOW SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. NORTH
WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS 24 TO 31.
.FRIDAY...CHANCE OF SNOW SHOWERS IN THE MORNING...THEN SNOW SHOWERS
LIKELY AND CHANCE OF SHOWERS IN THE AFTERNOON. SNOW ACCUMULATION UP
TO 1 INCH. LIGHT WINDS BECOMING SOUTHWEST AROUND 10 MPH IN THE
AFTERNOON. HIGHS 32 TO 39.

$$

ORZ050-062-221300-
NORWAY AREA 7000 TO 10000 FEET-
256 PM PDT TUE MAY 21 2013

.TONIGHT...SCATTERED SHOWERS WITH POSSIBLE SNOW SHOWERS AND
THUNDERSTORMS IN THE EVENING...THEN NUMEROUS SNOW SHOWERS AFTER
MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. SOUTH WINDS AROUND 10 MPH
IN THE EVENING BECOMING LIGHT. LOWS 18 TO 25.
.WEDNESDAY...CLOUDY WITH CHANCE OF SNOW SHOWERS. SNOW ACCUMULATION
UP TO 1 INCH. SOUTH WINDS 10 TO 15 MPH. HIGHS 31 TO 37.
.WEDNESDAY NIGHT...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS.
SOUTHWEST WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS
18 TO 25.
.THURSDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS IN THE
MORNING...THEN CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. LIGHT WINDS BECOMING NORTHEAST
AROUND 10 MPH IN THE AFTERNOON. HIGHS 37 TO 43.
.THURSDAY NIGHT...CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING...THEN SNOW SHOWERS LIKELY AFTER
MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. NORTH WINDS AROUND 10 MPH
SHIFTING TO THE EAST AFTER MIDNIGHT. LOWS 22 TO 29.
.FRIDAY...SNOW SHOWERS LIKELY IN THE MORNING...THEN CHANCE OF SNOW
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON. SNOW
ACCUMULATION UP TO 1 INCH. LIGHT WINDS BECOMING SOUTHWEST 10 TO
15 MPH IN THE AFTERNOON. HIGHS 39 TO 47.

$$

ORZ062-503-221300-
ANTHONY LAKES AREA 7000 TO 9000 FEET-
256 PM PDT TUE MAY 21 2013

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 10 AM
PDT WEDNESDAY...

.TONIGHT...NUMEROUS SNOW SHOWERS AND SHOWERS IN THE EVENING...THEN
NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION UP TO
1 INCH. WEST WINDS 10 TO 20 MPH. LOWS 14 TO 21.
.WEDNESDAY...CLOUDY WITH CHANCE OF SNOW SHOWERS. SNOW ACCUMULATION
UP TO 1 INCH. WEST WINDS 10 TO 15 MPH SHIFTING TO THE SOUTH IN THE
AFTERNOON. HIGHS 33 TO 38.
.WEDNESDAY NIGHT...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. WEST
WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS 17 TO 24.
.THURSDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS IN THE
MORNING...THEN CLOUDY WITH CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. NORTHEAST WINDS AROUND 10 MPH.
HIGHS 32 TO 39.
.THURSDAY NIGHT...CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING...THEN SNOW SHOWERS LIKELY AFTER
MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH. NORTH WINDS 10 TO 15 MPH
SHIFTING TO THE NORTHWEST AFTER MIDNIGHT. LOWS 22 TO 29.
.FRIDAY...CLOUDY. CHANCE OF SNOW SHOWERS IN THE MORNING...THEN
CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. SNOW ACCUMULATION UP TO 2 INCHES. SOUTHWEST WINDS AROUND
10 MPH. HIGHS 37 TO 43.

$$

ORZ502-221300-
BLUE MOUNTAINS 4000 TO 6000 FEET-
256 PM PDT TUE MAY 21 2013

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 10 AM
PDT WEDNESDAY...

.TONIGHT...NUMEROUS SHOWERS AND SNOW SHOWERS IN THE EVENING...THEN
NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION UP TO
2 INCHES. WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH. LOWS 25 TO
32.
.WEDNESDAY...SNOW SHOWERS LIKELY IN THE MORNING...THEN SNOW SHOWERS
AND SHOWERS LIKELY IN THE AFTERNOON. SNOW ACCUMULATION UP TO 1 INCH.
SOUTHWEST WINDS 10 TO 15 MPH. GUSTS UP TO 30 MPH IN THE MORNING.
HIGHS 38 TO 44.
.WEDNESDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS AND SHOWERS
IN THE EVENING...THEN CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WEST
WINDS AROUND 10 MPH IN THE EVENING BECOMING LIGHT. LOWS 24 TO 31.
.THURSDAY...MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE MORNING...
THEN CHANCE OF SHOWERS...SNOW SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. LIGHT WINDS BECOMING NORTH AROUND
10 MPH IN THE AFTERNOON. HIGHS 42 TO 48.
.THURSDAY NIGHT...CLOUDY. CHANCE OF SHOWERS...SNOW SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING...THEN CHANCE OF
SHOWERS AND SNOW SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION UP TO
1 INCH. NORTHWEST WINDS AROUND 10 MPH. LOWS 27 TO 34.
.FRIDAY...CLOUDY WITH CHANCE OF SHOWERS. SOUTHEAST WINDS 10 TO
15 MPH SHIFTING TO THE SOUTHWEST IN THE AFTERNOON. HIGHS 45 TO 51.

$$

ORZ509-221300-
BROKEN TOP-
256 PM PDT TUE MAY 21 2013

.TONIGHT...WIDESPREAD SNOW SHOWERS. SNOW ACCUMULATION AROUND 1 INCH.
WEST WINDS 15 TO 25 MPH. LOWS 16 TO 23.
.WEDNESDAY...SNOW SHOWERS. SNOW ACCUMULATION UP TO 1 INCH. SOUTHWEST
WINDS 20 TO 30 MPH WITH GUSTS TO 40 MPH. HIGHS 23 TO 30.
.WEDNESDAY NIGHT...SNOW SHOWERS LIKELY IN THE EVENING...THEN CHANCE
OF SNOW SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH.
SOUTHWEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH IN THE EVENING.
LOWS 16 TO 23.
.THURSDAY...CLOUDY WITH CHANCE OF SNOW SHOWERS IN THE MORNING...THEN
SNOW SHOWERS LIKELY IN THE AFTERNOON. SNOW ACCUMULATION UP TO
1 INCH. SOUTHWEST WINDS AROUND 10 MPH. HIGHS 25 TO 32.
.THURSDAY NIGHT...SNOW SHOWERS LIKELY. SNOW ACCUMULATION AROUND
1 INCH. LIGHT WINDS. LOWS 18 TO 25.
.FRIDAY...SNOW SHOWERS LIKELY. SNOW ACCUMULATION AROUND 1 INCH.
LIGHT WINDS. HIGHS 28 TO 35.

$$

ORZ509-221300-
TAM MCARTHUR RIM-
256 PM PDT TUE MAY 21 2013

.TONIGHT...WIDESPREAD SNOW SHOWERS IN THE EVENING...THEN NUMEROUS
SNOW SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION AROUND 1 INCH. WEST
WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH. LOWS 16 TO 23.
.WEDNESDAY...SNOW SHOWERS LIKELY. SNOW ACCUMULATION UP TO 1 INCH.
SOUTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 40 MPH. HIGHS 23 TO 30.
.WEDNESDAY NIGHT...SNOW SHOWERS LIKELY IN THE EVENING...THEN CHANCE
OF SNOW SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION UP TO 1 INCH.
SOUTHWEST WINDS 10 TO 20 MPH. GUSTS UP TO 30 MPH IN THE EVENING.
LOWS 16 TO 23.
.THURSDAY...CLOUDY WITH CHANCE OF SNOW SHOWERS IN THE MORNING...THEN
SNOW SHOWERS LIKELY IN THE AFTERNOON. SNOW ACCUMULATION UP TO
1 INCH. SOUTH WINDS AROUND 10 MPH. HIGHS 26 TO 33.
.THURSDAY NIGHT...SNOW SHOWERS LIKELY. SNOW ACCUMULATION AROUND
1 INCH. LIGHT WINDS. LOWS 18 TO 25.
.FRIDAY...SNOW SHOWERS LIKELY. SNOW ACCUMULATION AROUND 1 INCH.
LIGHT WINDS. HIGHS 28 TO 35.

$$

ORZ509-221300-
NEWBERRY CRATER-
256 PM PDT TUE MAY 21 2013

.TONIGHT...CLOUDY. SCATTERED SNOW SHOWERS IN THE EVENING...THEN
ISOLATED SNOW SHOWERS AFTER MIDNIGHT. SNOW ACCUMULATION UP TO
1 INCH. WEST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH. LOWS 20 TO 27.
.WEDNESDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW SHOWERS. LITTLE OR NO
SNOW ACCUMULATION. SOUTHWEST WINDS 15 TO 25 MPH. HIGHS 30 TO 37.
.WEDNESDAY NIGHT...CLOUDY WITH CHANCE OF SNOW SHOWERS. WEST WINDS
15 TO 20 MPH WITH GUSTS TO 30 MPH SHIFTING TO THE SOUTHWEST AROUND
10 MPH AFTER MIDNIGHT. LOWS 20 TO 27.
.THURSDAY...MOSTLY CLOUDY. CHANCE OF SNOW SHOWERS IN THE MORNING...
THEN CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. SNOW ACCUMULATION UP TO 1 INCH. SOUTHWEST WINDS
AROUND 10 MPH. HIGHS 34 TO 41.
.THURSDAY NIGHT...CHANCE OF SNOW SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING...THEN SNOW SHOWERS LIKELY AFTER
MIDNIGHT. SNOW ACCUMULATION AROUND 1 INCH. LIGHT WINDS. LOWS 23 TO
30.
.FRIDAY...SNOW SHOWERS LIKELY. SNOW ACCUMULATION UP TO 1 INCH. LIGHT
WINDS BECOMING WEST AROUND 10 MPH IN THE AFTERNOON. HIGHS 40 TO 46.

$$