Snow Avalanche Guidance
Issued by NWS Pendleton, OR

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000
FWUS46 KPDT 192156
SAGPDT

Avalanche Guidance
National Weather Service Pendleton OR
256 PM PDT Tue Sep 19 2017

ORZ050-201300-
Wallowa Mountains 8000 to 9000 feet-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Widespread snow showers and isolated thunderstorms in the
evening, then widespread snow showers after midnight. Snow
accumulation around 1 inch. Southwest winds 15 to 20 mph with gusts
to 30 mph. Lows 19 to 26.
.WEDNESDAY...Snow showers in the morning, then snow showers and
slight chance of thunderstorms in the afternoon. Snow accumulation
around 2 inches. Southwest winds 15 to 25 mph with gusts to 35 mph.
Highs 25 to 32.
.WEDNESDAY NIGHT...Snow showers likely and slight chance of
thunderstorms in the evening, then snow showers likely after
midnight. Snow accumulation up to 1 inch. West winds 10 to 15 mph.
Gusts up to 25 mph in the evening. Lows 15 to 22.
.THURSDAY...Snow showers likely in the morning, then snow showers in
the afternoon. Snow accumulation up to 2 inches. Light winds
becoming west around 10 mph in the afternoon. Highs 23 to 30.
.THURSDAY NIGHT...Cloudy with chance of snow showers. Snow
accumulation up to 1 inch. Northwest winds around 10 mph shifting to
the northeast after midnight. Lows 16 to 23.
.FRIDAY...Cloudy in the morning then becoming mostly cloudy. Chance
of snow showers. Snow accumulation up to 1 inch. Northeast winds
around 10 mph shifting to the northwest in the afternoon. Highs
24 to 31.

$$

ORZ050-201300-
Salt Creek Area 5000 to 7000 feet-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Numerous showers, snow showers and isolated thunderstorms
in the evening, then widespread showers and snow showers after
midnight. Snow accumulation up to 1 inch. Southwest winds around
10 mph. Lows 26 to 33.
.WEDNESDAY...Showers and snow showers in the morning, then showers
and slight chance of thunderstorms in the afternoon. Snow
accumulation up to 2 inches. Southwest winds 10 to 15 mph. Gusts up
to 25 mph in the afternoon. Highs 33 to 40.
.WEDNESDAY NIGHT...Showers, snow showers likely and slight chance of
thunderstorms in the evening, then chance of showers and snow
showers after midnight. Snow accumulation up to 1 inch. West winds
around 10 mph in the evening becoming light. Lows 20 to 27.
.THURSDAY...Snow showers likely in the morning, then snow showers
and showers in the afternoon. Snow accumulation up to 1 inch. Light
winds becoming west around 10 mph in the afternoon. Highs 31 to 38.
.THURSDAY NIGHT...Cloudy with chance of showers and snow showers.
North winds around 10 mph shifting to the south after midnight. Lows
23 to 30.
.FRIDAY...Cloudy in the morning then becoming mostly cloudy. Chance
of snow showers and showers. North winds around 10 mph. Highs 33 to
40.

$$

ORZ050-062-201300-
Clear Creek Area 6000 to 8000 feet-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Widespread snow showers with possible showers and
thunderstorms in the evening, then widespread snow showers and
showers after midnight. Snow accumulation of 1 to 2 inches.
Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening.
Lows 23 to 30.
.WEDNESDAY...Snow showers and showers in the morning, then snow
showers, showers and slight chance of thunderstorms in the
afternoon. Snow accumulation up to 3 inches. Southwest winds 10 to
15 mph with gusts to 30 mph. Highs 32 to 39.
.WEDNESDAY NIGHT...Snow showers, showers likely and slight chance of
thunderstorms in the evening, then chance of snow showers after
midnight. Snow accumulation up to 1 inch. West winds 10 to 15 mph in
the evening becoming light. Lows 18 to 25.
.THURSDAY...Snow showers likely. Snow accumulation up to 1 inch.
Light winds becoming southwest around 10 mph in the afternoon. Highs
29 to 36.
.THURSDAY NIGHT...Snow showers likely in the evening, then chance of
snow showers after midnight. Snow accumulation up to 1 inch.
Northwest winds around 10 mph shifting to the north after midnight.
Lows 20 to 27.
.FRIDAY...Cloudy with chance of snow showers in the morning, then
mostly cloudy with chance of snow showers and showers in the
afternoon. Little or no snow accumulation. Northeast winds around
10 mph shifting to the northwest in the afternoon. Highs 32 to 39.

$$

ORZ050-062-201300-
Catherine Creek Area 6000 to 8000 feet-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Widespread snow showers, showers and isolated
thunderstorms in the evening, then widespread snow showers after
midnight. Snow accumulation of 1 to 2 inches. Southwest winds 10 to
15 mph. Gusts up to 25 mph in the evening. Lows 25 to 32.
.WEDNESDAY...Snow showers and showers in the morning, then snow
showers, showers and slight chance of thunderstorms in the
afternoon. Snow accumulation up to 2 inches. Southwest winds 10 to
15 mph with gusts to 30 mph. Highs 35 to 42.
.WEDNESDAY NIGHT...Snow showers likely and slight chance of
thunderstorms in the evening, then chance of snow showers after
midnight. Snow accumulation up to 1 inch. West winds 10 to 15 mph.
Lows 21 to 28.
.THURSDAY...Chance of snow showers in the morning, then snow showers
likely in the afternoon. Snow accumulation up to 1 inch. Light winds
becoming northwest around 10 mph in the afternoon. Highs 33 to 41.
.THURSDAY NIGHT...Cloudy with chance of snow showers. Little or no
snow accumulation. Northwest winds around 10 mph shifting to the
south after midnight. Lows 28 to 34.
.FRIDAY...Cloudy in the morning then becoming mostly cloudy. Chance
of snow showers. Little or no snow accumulation. East winds around
10 mph shifting to the northwest in the afternoon. Highs 35 to 43.

$$

ORZ050-062-201300-
Norway Area 7000 to 10000 feet-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Widespread snow showers and isolated thunderstorms in the
evening, then widespread snow showers after midnight. Snow
accumulation of 1 to 2 inches. Southwest winds 10 to 15 mph. Gusts
up to 25 mph in the evening. Lows 22 to 29.
.WEDNESDAY...Snow showers in the morning, then snow showers and
slight chance of thunderstorms in the afternoon. Snow accumulation
of 2 to 3 inches. Southwest winds 10 to 20 mph with gusts to 30 mph.
Highs 31 to 38.
.WEDNESDAY NIGHT...Snow showers likely and slight chance of
thunderstorms in the evening, then chance of snow showers after
midnight. Snow accumulation up to 1 inch. West winds 10 to 15 mph.
Lows 18 to 25.
.THURSDAY...Snow showers likely. Snow accumulation up to 1 inch.
Light winds becoming west around 10 mph in the afternoon. Highs
27 to 34.
.THURSDAY NIGHT...Snow showers likely in the evening, then chance of
snow showers after midnight. Snow accumulation up to 1 inch. North
winds around 10 mph. Lows 19 to 26.
.FRIDAY...Cloudy in the morning then becoming mostly cloudy. Chance
of snow showers. Little or no snow accumulation. Northeast winds
around 10 mph shifting to the northwest in the afternoon. Highs
31 to 38.

$$

ORZ062-503-201300-
Anthony Lakes Area 7000 to 9000 feet-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Numerous snow showers and isolated thunderstorms in the
evening, then widespread snow showers after midnight. Snow
accumulation of 1 to 2 inches. Southwest winds 15 to 20 mph with
gusts to 30 mph. Lows 23 to 30.
.WEDNESDAY...Snow showers and showers in the morning, then snow
showers and slight chance of thunderstorms in the afternoon. Snow
accumulation of 1 to 2 inches. West winds 15 to 20 mph with gusts to
30 mph. Highs 29 to 36.
.WEDNESDAY NIGHT...Snow showers likely and slight chance of
thunderstorms in the evening, then snow showers likely after
midnight. Snow accumulation around 1 inch. West winds 10 to 20 mph.
Gusts up to 30 mph in the evening. Lows 19 to 26.
.THURSDAY...Mostly cloudy in the morning then becoming cloudy.
Chance of snow showers. Snow accumulation up to 1 inch. West winds
around 10 mph. Highs 27 to 34.
.THURSDAY NIGHT...Snow showers likely in the evening, then chance of
snow showers after midnight. Snow accumulation up to 1 inch.
Northwest winds around 10 mph. Lows 20 to 27.
.FRIDAY...Cloudy in the morning then becoming mostly cloudy. Chance
of snow showers. Little or no snow accumulation. Northwest winds
10 to 15 mph. Highs 34 to 40.

$$

ORZ502-201300-
Blue Mountains 4000 to 6000 feet-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Numerous showers and isolated thunderstorms in the
evening, then widespread showers after midnight. Southwest winds
10 to 20 mph with gusts to 35 mph. Lows 29 to 36.
.WEDNESDAY...Showers in the morning, then showers and slight chance
of thunderstorms in the afternoon. Southwest winds 10 to 15 mph.
Gusts up to 25 mph in the afternoon. Highs 37 to 43.
.WEDNESDAY NIGHT...Showers, snow showers likely and slight chance of
thunderstorms in the evening, then chance of showers and snow
showers after midnight. Snow accumulation up to 1 inch. West winds
10 to 15 mph. Gusts up to 25 mph in the evening. Lows 26 to 33.
.THURSDAY...Chance of showers and snow showers in the morning, then
showers and snow showers likely in the afternoon. Snow accumulation
up to 1 inch. West winds 10 to 15 mph. Highs 39 to 45.
.THURSDAY NIGHT...Mostly cloudy with chance of showers and snow
showers. West winds around 10 mph in the evening becoming light.
Lows 26 to 33.
.FRIDAY...Cloudy with chance of showers and snow showers in the
morning, then mostly cloudy with chance of showers in the afternoon.
Light winds becoming northwest around 10 mph in the afternoon. Highs
42 to 48.

$$

ORZ509-201300-
Broken Top-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Widespread snow showers, showers and isolated
thunderstorms in the evening, then widespread showers and snow
showers after midnight. Snow accumulation up to 4 inches. Southwest
winds 15 to 25 mph with gusts to 40 mph. Lows 22 to 29.
.WEDNESDAY...Snow showers in the morning, then snow showers and
slight chance of thunderstorms in the afternoon. Snow accumulation
of 2 to 5 inches. West winds 15 to 25 mph with gusts to 35 mph.
Highs 25 to 32.
.WEDNESDAY NIGHT...Snow showers likely and slight chance of
thunderstorms in the evening, then chance of snow showers after
midnight. Snow accumulation up to 2 inches. West winds 10 to 20 mph.
Gusts up to 30 mph in the evening. Lows 18 to 25.
.THURSDAY...Mostly cloudy in the morning then becoming cloudy.
Chance of snow showers. Snow accumulation up to 1 inch. West winds
10 to 15 mph. Highs 30 to 37.
.THURSDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening, then slight chance of snow showers after midnight. Little
or no snow accumulation. Northwest winds 10 to 15 mph. Lows 18 to
25.
.FRIDAY...Mostly cloudy. Slight chance of snow showers in the
morning, then chance of snow showers in the afternoon. Light winds
becoming northwest around 10 mph in the afternoon. Highs 33 to 40.

$$

ORZ509-201300-
Tam McArthur Rim-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Widespread snow showers, showers and isolated
thunderstorms in the evening, then widespread showers and snow
showers after midnight. Snow accumulation up to 1 inch. Southwest
winds 15 to 25 mph with gusts to 35 mph. Lows 22 to 29.
.WEDNESDAY...Snow showers in the morning, then snow showers and
slight chance of thunderstorms in the afternoon. Snow accumulation
of 2 to 5 inches. West winds 15 to 25 mph with gusts to 35 mph.
Highs 26 to 33.
.WEDNESDAY NIGHT...Snow showers likely and slight chance of
thunderstorms in the evening, then chance of snow showers after
midnight. Snow accumulation up to 1 inch. West winds 10 to 20 mph.
Gusts up to 30 mph in the evening. Lows 18 to 25.
.THURSDAY...Mostly cloudy in the morning then becoming cloudy.
Chance of snow showers. Snow accumulation up to 1 inch. West winds
10 to 15 mph. Highs 31 to 38.
.THURSDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening, then slight chance of snow showers after midnight. Little
or no snow accumulation. Northwest winds 10 to 15 mph. Lows 18 to
25.
.FRIDAY...Mostly cloudy. Slight chance of snow showers in the
morning, then chance of snow showers in the afternoon. Light winds
becoming northwest around 10 mph in the afternoon. Highs 34 to 41.

$$

ORZ509-201300-
Newberry Crater-
256 PM PDT Tue Sep 19 2017

.TONIGHT...Numerous showers, snow showers and isolated thunderstorms
in the evening, then widespread showers after midnight. Little or no
snow accumulation. Southwest winds 15 to 25 mph. Gusts up to 30 mph
increasing to 40 mph after midnight. Lows 29 to 36.
.WEDNESDAY...Showers and snow showers in the morning, then snow
showers and slight chance of thunderstorms in the afternoon. Snow
accumulation up to 2 inches. West winds 15 to 25 mph with gusts to
40 mph. Highs 32 to 39.
.WEDNESDAY NIGHT...Snow showers likely and slight chance of
thunderstorms in the evening, then chance of snow showers after
midnight. Little or no snow accumulation. West winds 10 to 20 mph.
Gusts up to 30 mph in the evening. Lows 21 to 28.
.THURSDAY...Mostly cloudy with chance of snow showers. Little or no
snow accumulation. West winds 10 to 15 mph. Highs 35 to 42.
.THURSDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening, then slight chance of snow showers after midnight.
Northwest winds 10 to 15 mph. Lows 24 to 31.
.FRIDAY...Mostly cloudy with slight chance of snow showers.
Northwest winds around 10 mph. Highs 37 to 44.

$$


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