Snow Avalanche Guidance
Issued by NWS Pendleton, OR

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FWUS46 KPDT 181156
SAGPDT

Avalanche Guidance
National Weather Service Pendleton OR
356 AM PST Mon Dec 18 2017

ORZ050-190200-
Wallowa Mountains 8000 to 9000 feet-
356 AM PST Mon Dec 18 2017

.TODAY...Cloudy with chance of snow. West winds 10 to 20 mph with
gusts to 30 mph. Highs 24 to 31.
.TONIGHT...Cloudy with chance of snow. Southwest winds 10 to 20 mph.
Gusts up to 30 mph after midnight. Lows 22 to 29.
.TUESDAY...Cloudy with chance of snow. Southwest winds 15 to 25 mph
with gusts to 35 mph. Highs 27 to 34.
.TUESDAY NIGHT...Snow likely in the evening, then snow after
midnight. Snow accumulation of 1 to 2 inches. Southwest winds 20 to
30 mph. Gusts up to 40 mph in the evening. Lows 10 to 17.
.WEDNESDAY...Snow likely. Snow accumulation up to 1 inch. West winds
10 to 15 mph. Highs 14 to 21.
.WEDNESDAY NIGHT...Mostly cloudy. Chance of snow in the evening,
then slight chance of snow after midnight. Northwest winds 10 to
15 mph shifting to the west after midnight. Lows 4 to 11.

$$

ORZ050-190200-
Salt Creek Area 5000 to 7000 feet-
356 AM PST Mon Dec 18 2017

.TODAY...Cloudy with chance of snow. South winds around 10 mph.
Highs 27 to 34.
.TONIGHT...Cloudy with chance of snow. South winds around 10 mph.
Lows 22 to 29.
.TUESDAY...Cloudy with chance of snow. South winds 10 to 15 mph.
Highs 29 to 36.
.TUESDAY NIGHT...Snow likely in the evening, then snow after
midnight. Snow accumulation up to 2 inches. South winds 10 to
15 mph. Gusts up to 25 mph in the evening. Lows 17 to 24.
.WEDNESDAY...Snow likely in the morning, then chance of snow in the
afternoon. Snow accumulation up to 1 inch. West winds around 10 mph
in the morning becoming light. Highs 21 to 28.
.WEDNESDAY NIGHT...Mostly cloudy. Chance of snow in the evening,
then slight chance of snow after midnight. Northwest winds around
10 mph shifting to the west after midnight. Lows 8 to 15.

$$

ORZ050-062-190200-
Clear Creek Area 6000 to 8000 feet-
356 AM PST Mon Dec 18 2017

.TODAY...Cloudy with chance of snow. Southwest winds around 10 mph
in the morning becoming light. Highs 24 to 31.
.TONIGHT...Cloudy with chance of snow. South winds around 10 mph.
Lows 19 to 26.
.TUESDAY...Cloudy with chance of snow. South winds 10 to 15 mph.
Highs 27 to 34.
.TUESDAY NIGHT...Snow likely in the evening, then snow after
midnight. Snow accumulation of 1 to 2 inches. South winds 10 to
20 mph with gusts to 30 mph. Lows 13 to 20.
.WEDNESDAY...Snow likely. Snow accumulation up to 1 inch. West winds
around 10 mph. Highs 15 to 22.
.WEDNESDAY NIGHT...Mostly cloudy with chance of snow. North winds
around 10 mph. Lows 6 to 13.

$$

ORZ050-062-190200-
Catherine Creek Area 6000 to 8000 feet-
356 AM PST Mon Dec 18 2017

.TODAY...Cloudy with chance of snow. Southwest winds around 10 mph.
Highs 27 to 34.
.TONIGHT...Cloudy with chance of snow. South winds around 10 mph.
Lows 23 to 30.
.TUESDAY...Cloudy with chance of snow. South winds 10 to 15 mph with
gusts to 25 mph. Highs 29 to 36.
.TUESDAY NIGHT...Snow likely in the evening, then snow after
midnight. Snow accumulation of 1 to 2 inches. South winds 10 to
20 mph with gusts to 30 mph. Lows 15 to 22.
.WEDNESDAY...Snow likely in the morning, then mostly cloudy with
chance of snow in the afternoon. Snow accumulation up to 1 inch.
West winds around 10 mph. Highs 19 to 26.
.WEDNESDAY NIGHT...Cloudy. Chance of snow in the evening, then
slight chance of snow after midnight. West winds around 10 mph. Lows
10 to 17.

$$

ORZ050-062-190200-
Norway Area 7000 to 10000 feet-
356 AM PST Mon Dec 18 2017

.TODAY...Cloudy with chance of snow. Southwest winds around 10 mph.
Highs 23 to 30.
.TONIGHT...Cloudy with chance of snow. South winds around 10 mph.
Lows 19 to 26.
.TUESDAY...Cloudy with chance of snow. South winds 10 to 15 mph with
gusts to 25 mph. Highs 28 to 35.
.TUESDAY NIGHT...Snow likely in the evening, then snow after
midnight. Snow accumulation of 1 to 2 inches. South winds 10 to
20 mph with gusts to 30 mph. Lows 13 to 20.
.WEDNESDAY...Snow likely. Snow accumulation up to 1 inch. West winds
around 10 mph. Highs 15 to 22.
.WEDNESDAY NIGHT...Mostly cloudy with chance of snow. Northwest
winds around 10 mph. Lows 5 to 12.

$$

ORZ062-503-190200-
Anthony Lakes Area 7000 to 9000 feet-
356 AM PST Mon Dec 18 2017

.TODAY...Cloudy with slight chance of snow. West winds 10 to 15 mph.
Highs 25 to 32.
.TONIGHT...Cloudy with slight chance of snow. Southwest winds 10 to
15 mph. Lows 22 to 29.
.TUESDAY...Cloudy. Slight chance of snow in the morning, then chance
of snow in the afternoon. Southwest winds 15 to 20 mph with gusts to
30 mph. Highs 27 to 34.
.TUESDAY NIGHT...Snow likely in the evening, then snow after
midnight. Snow accumulation of 1 to 2 inches. Southwest winds 15 to
25 mph. Gusts up to 35 mph in the evening. Lows 12 to 19.
.WEDNESDAY...Snow likely. Snow accumulation around 1 inch. Northwest
winds 10 to 15 mph. Gusts up to 25 mph in the morning. Highs 13 to
20.
.WEDNESDAY NIGHT...Mostly cloudy with chance of snow. Northwest
winds 10 to 15 mph. Gusts up to 25 mph in the evening. Lows 6 to 13.

$$

ORZ502-190200-
Blue Mountains 4000 to 6000 feet-
356 AM PST Mon Dec 18 2017

.TODAY...Cloudy with chance of snow and rain. Snow accumulation up
to 3 inches. Southwest winds 10 to 15 mph with gusts to 30 mph.
Highs 34 to 41.
.TONIGHT...Rain and snow likely in the evening, then chance of rain
and snow after midnight. Snow accumulation up to 2 inches. Southwest
winds 10 to 15 mph. Lows 26 to 33.
.TUESDAY...Cloudy with chance of rain and snow. Little or no snow
accumulation. South winds 10 to 15 mph with gusts to 25 mph. Highs
33 to 40.
.TUESDAY NIGHT...Snow and rain likely in the evening, then snow
after midnight. Snow accumulation up to 2 inches. Southwest winds
10 to 15 mph with gusts to 30 mph. Lows 16 to 23.
.WEDNESDAY...Cloudy with chance of snow. Snow accumulation up to
1 inch. West winds 10 to 15 mph. Highs 21 to 28.
.WEDNESDAY NIGHT...Mostly cloudy with slight chance of snow in the
evening, then partly cloudy after midnight. Northwest winds around
10 mph. Lows 12 to 19.

$$

ORZ509-190200-
Broken Top-
356 AM PST Mon Dec 18 2017

.TODAY...Mostly cloudy. West winds 10 to 15 mph. Gusts up to 25 mph
in the morning. Highs 31 to 38.
.TONIGHT...Mostly cloudy. Slight chance of snow after midnight.
Southwest winds 10 to 15 mph with gusts to 25 mph increasing to
15 to 25 mph with gusts to 35 mph after midnight. Lows 21 to 28.
.TUESDAY...Mostly cloudy with slight chance of snow in the morning,
then snow likely in the afternoon. Snow accumulation up to 1 inch.
Southwest winds 20 to 35 mph with gusts to 50 mph. Highs 31 to 38.
.TUESDAY NIGHT...Snow. Snow accumulation of 3 to 4 inches. Southwest
winds 25 to 35 mph with gusts to 50 mph becoming west 10 to 20 mph
with gusts to 30 mph after midnight. Lows 8 to 15.
.WEDNESDAY...Snow likely. Snow accumulation of 1 to 2 inches. West
winds 15 to 20 mph. Highs 15 to 22.
.WEDNESDAY NIGHT...Mostly cloudy. Slight chance of snow in the
evening. West winds 10 to 15 mph. Lows 5 to 12.

$$

ORZ509-190200-
Tam McArthur Rim-
356 AM PST Mon Dec 18 2017

.TODAY...Mostly cloudy. West winds 10 to 15 mph. Gusts up to 25 mph
in the morning. Highs 32 to 39.
.TONIGHT...Mostly cloudy. Slight chance of snow after midnight.
Southwest winds 10 to 15 mph with gusts to 25 mph increasing to
15 to 25 mph with gusts to 35 mph after midnight. Lows 22 to 29.
.TUESDAY...Mostly cloudy with slight chance of snow in the morning,
then snow likely in the afternoon. Snow accumulation up to 1 inch.
Southwest winds 15 to 25 mph increasing to 25 to 35 mph in the
afternoon. Gusts up to 50 mph. Highs 32 to 39.
.TUESDAY NIGHT...Snow. Snow accumulation of 3 to 4 inches. Southwest
winds 25 to 35 mph with gusts to 50 mph becoming west 10 to 20 mph
with gusts to 30 mph after midnight. Lows 9 to 16.
.WEDNESDAY...Snow likely. Snow accumulation of 1 to 2 inches. West
winds 15 to 20 mph. Highs 15 to 22.
.WEDNESDAY NIGHT...Mostly cloudy. Northwest winds 10 to 15 mph
shifting to the southwest after midnight. Lows 6 to 13.

$$

ORZ509-190200-
Newberry Crater-
356 AM PST Mon Dec 18 2017

.TODAY...Mostly cloudy. West winds 10 to 15 mph. Gusts up to 25 mph
in the morning. Highs 36 to 43.
.TONIGHT...Mostly cloudy. Southwest winds 10 to 20 mph. Gusts up to
30 mph after midnight. Lows 26 to 33.
.TUESDAY...Mostly cloudy. Chance of snow in the afternoon. Southwest
winds 20 to 30 mph with gusts to 45 mph. Highs 36 to 43.
.TUESDAY NIGHT...Snow in the evening, then chance of snow after
midnight. Snow accumulation of 1 to 3 inches. Southwest winds 20 to
30 mph with gusts to 45 mph shifting to the west 15 to 20 mph with
gusts to 30 mph after midnight. Lows 13 to 20.
.WEDNESDAY...Mostly cloudy in the morning then becoming cloudy.
Chance of snow. Snow accumulation up to 1 inch. West winds 10 to
15 mph with gusts to 25 mph. Highs 19 to 26.
.WEDNESDAY NIGHT...Partly cloudy. Northwest winds 10 to 15 mph
shifting to the southwest after midnight. Lows 8 to 15.

$$


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