Snow Avalanche Guidance
Issued by NWS Pendleton, OR

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000
FWUS46 KPDT 201056
SAGPDT

Avalanche Guidance
National Weather Service Pendleton OR
356 AM PDT Wed Sep 20 2017

ORZ050-210100-
Wallowa Mountains 8000 to 9000 feet-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread snow showers in the morning, then widespread
snow showers and isolated thunderstorms in the afternoon. Snow
accumulation of 2 to 4 inches. Southwest winds 15 to 25 mph with
gusts to 35 mph. Highs 25 to 32.
.TONIGHT...Snow showers likely and slight chance of thunderstorms in
the evening, then snow showers likely after midnight. Snow
accumulation around 1 inch. West winds 15 to 20 mph with gusts to
30 mph decreasing to around 10 mph after midnight. Lows 15 to 22.
.THURSDAY...Chance of snow showers in the morning, then snow showers
in the afternoon. Snow accumulation up to 2 inches. Light winds
becoming northwest around 10 mph in the afternoon. Highs 23 to 30.
.THURSDAY NIGHT...Cloudy with chance of snow showers. Snow
accumulation up to 1 inch. North winds around 10 mph. Lows 16 to 23.
.FRIDAY...Cloudy in the morning then becoming mostly cloudy. Chance
of snow showers. Northeast winds around 10 mph. Highs 25 to 32.
.FRIDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening. North winds around 10 mph in the evening becoming light.
Lows 20 to 27.

$$

ORZ050-210100-
Salt Creek Area 5000 to 7000 feet-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread showers in the morning, then widespread showers
and isolated thunderstorms in the afternoon. Southwest winds 10 to
15 mph with gusts to 25 mph. Highs 34 to 41.
.TONIGHT...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. Light winds.
Lows 21 to 28.
.THURSDAY...Chance of snow showers and showers in the morning, then
showers and snow showers in the afternoon. Snow accumulation up to
2 inches. Light winds. Highs 32 to 39.
.THURSDAY NIGHT...Cloudy with chance of showers and snow showers.
North winds around 10 mph. Lows 24 to 31.
.FRIDAY...Cloudy with slight chance of snow showers in the morning,
then mostly cloudy with chance of showers and snow showers in the
afternoon. North winds around 10 mph. Highs 35 to 42.
.FRIDAY NIGHT...Mostly cloudy. Chance of snow showers and slight
chance of showers in the evening. North winds around 10 mph in the
evening becoming light. Lows 25 to 32.

$$

ORZ050-062-210100-
Clear Creek Area 6000 to 8000 feet-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread snow showers and showers in the morning, then
widespread snow showers, showers and isolated thunderstorms in the
afternoon. Snow accumulation up to 5 inches. Southwest winds 10 to
15 mph with gusts to 30 mph. Highs 32 to 39.
.TONIGHT...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 around 10 mph
with gusts to 25 mph in the evening becoming light. Lows 18 to 25.
.THURSDAY...Chance of snow showers in the morning, then snow showers
likely in the afternoon. Snow accumulation up to 2 inches. Light
winds. 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. North
winds 10 to 15 mph. Lows 20 to 27.
.FRIDAY...Cloudy in the morning then becoming mostly cloudy. Chance
of snow showers. North winds around 10 mph. Highs 33 to 40.
.FRIDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening. Little or no snow accumulation. North winds around 10 mph.
Lows 23 to 30.

$$

ORZ050-062-210100-
Catherine Creek Area 6000 to 8000 feet-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread snow showers and showers in the morning, then
widespread snow showers, showers and isolated thunderstorms in the
afternoon. Snow accumulation up to 4 inches. Southwest winds 10 to
15 mph with gusts to 25 mph. Highs 34 to 40.
.TONIGHT...Snow showers, showers likely and slight chance of
thunderstorms in the evening, then chance of snow showers after
midnight. Snow accumulation around 1 inch. West winds around 10 mph.
Gusts up to 25 mph in the evening. 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 39.
.THURSDAY NIGHT...Cloudy with chance of snow showers. Snow
accumulation up to 1 inch. North winds around 10 mph. Lows 23 to 30.
.FRIDAY...Cloudy with slight chance of snow showers in the morning,
then mostly cloudy with chance of snow showers in the afternoon.
Light winds becoming northeast around 10 mph in the afternoon. Highs
37 to 43.
.FRIDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening. Little or no snow accumulation. North winds around 10 mph
in the evening becoming light. Lows 26 to 33.

$$

ORZ050-062-210100-
Norway Area 7000 to 10000 feet-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread snow showers in the morning, then widespread
snow showers and isolated thunderstorms in the afternoon. Snow
accumulation of 2 to 5 inches. Southwest winds 10 to 20 mph with
gusts to 30 mph. Highs 29 to 36.
.TONIGHT...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 with gusts to
25 mph in the evening becoming light. Lows 18 to 25.
.THURSDAY...Chance of snow showers in the morning, then snow showers
likely in the afternoon. Snow accumulation up to 2 inches. Light
winds. Highs 26 to 33.
.THURSDAY NIGHT...Snow showers likely in the evening, then chance of
snow showers after midnight. Snow accumulation up to 1 inch. North
winds 10 to 15 mph. Lows 20 to 27.
.FRIDAY...Cloudy in the morning then becoming mostly cloudy. Chance
of snow showers. North winds around 10 mph. Highs 31 to 38.
.FRIDAY NIGHT...Snow showers likely in the evening. Little or no
snow accumulation. North winds around 10 mph. Lows 21 to 28.

$$

ORZ062-503-210100-
Anthony Lakes Area 7000 to 9000 feet-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread snow showers in the morning, then widespread
snow showers and isolated thunderstorms in the afternoon. Snow
accumulation of 2 to 3 inches. Southwest winds 10 to 20 mph with
gusts to 30 mph. Highs 28 to 35.
.TONIGHT...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 18 to 25.
.THURSDAY...Mostly cloudy in the morning then becoming cloudy.
Chance of snow showers. Snow accumulation up to 2 inches. Northwest
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. North
winds around 10 mph. Lows 20 to 27.
.FRIDAY...Mostly cloudy. Slight chance of snow showers in the
morning, then chance of snow showers in the afternoon. North winds
10 to 15 mph. Highs 31 to 38.
.FRIDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening. Little or no snow accumulation. North winds around 10 mph
in the evening becoming light. Lows 23 to 30.

$$

ORZ502-210100-
Blue Mountains 4000 to 6000 feet-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread showers and snow showers in the morning, then
widespread showers and isolated thunderstorms in the afternoon. Snow
accumulation up to 3 inches. South winds 10 to 15 mph shifting to
the west with gusts to 30 mph in the afternoon. Highs 38 to 44.
.TONIGHT...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 with gusts to 30 mph. 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 around 10 mph. Highs 40 to 46.
.THURSDAY NIGHT...Mostly cloudy with chance of showers and snow
showers. Northwest winds around 10 mph in the evening becoming
light. Lows 27 to 34.
.FRIDAY...Cloudy with slight chance of showers and snow showers in
the morning, then mostly cloudy with chance of showers in the
afternoon. Light winds becoming north around 10 mph in the
afternoon. Highs 43 to 49.
.FRIDAY NIGHT...Mostly cloudy. Slight chance of showers in the
evening. Light winds. Lows 31 to 38.

$$

ORZ509-210100-
Broken Top-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread snow showers in the morning, then widespread
snow showers and isolated thunderstorms in the afternoon. Snow
accumulation up to 8 inches. West winds 15 to 25 mph with gusts to
40 mph. Highs 28 to 35.
.TONIGHT...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
around 10 mph. Highs 30 to 37.
.THURSDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening, then slight chance of snow showers after midnight. Snow
accumulation up to 1 inch. Northwest winds around 10 mph in the
evening becoming light. Lows 20 to 27.
.FRIDAY...Mostly cloudy. Slight chance of snow showers in the
afternoon. Light winds. Highs 35 to 42.
.FRIDAY NIGHT...Mostly cloudy in the evening then clearing.
Northeast winds around 10 mph in the evening becoming light. Lows
22 to 29.

$$

ORZ509-210100-
Tam McArthur Rim-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread snow showers in the morning, then widespread
snow showers and isolated thunderstorms in the afternoon. Snow
accumulation of 2 to 8 inches. West winds 15 to 25 mph with gusts to
35 mph. Highs 28 to 35.
.TONIGHT...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
around 10 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 around 10 mph in the
evening becoming light. Lows 20 to 27.
.FRIDAY...Mostly cloudy. Slight chance of snow showers in the
afternoon. Light winds. Highs 36 to 43.
.FRIDAY NIGHT...Mostly cloudy in the evening then clearing. Light
winds. Lows 22 to 29.

$$

ORZ509-210100-
Newberry Crater-
356 AM PDT Wed Sep 20 2017

.TODAY...Widespread snow showers and showers in the morning, then
widespread snow showers, showers and isolated thunderstorms in the
afternoon. Snow accumulation up to 3 inches. West winds 20 to 30 mph
with gusts to 40 mph. Highs 33 to 40.
.TONIGHT...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 21 to 28.
.THURSDAY...Mostly cloudy. Slight chance of snow showers in the
morning, then chance of snow showers in the afternoon. Snow
accumulation up to 1 inch. Northwest winds around 10 mph. Highs
36 to 43.
.THURSDAY NIGHT...Mostly cloudy. Chance of snow showers in the
evening, then slight chance of snow showers after midnight. North
winds around 10 mph. Lows 24 to 31.
.FRIDAY...Mostly cloudy. Light winds. Highs 38 to 45.
.FRIDAY NIGHT...Mostly cloudy in the evening then clearing.
Northeast winds around 10 mph in the evening becoming light. Lows
26 to 33.

$$


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