000
WWUS86 KPQR 161551
SABOR
SUMMARY BACKCOUNTRY AVALANCHE FORECAST FOR THE MT HOOD AREA
NORTHWEST WEATHER AND AVALANCHE CENTER SEATTLE WASHINGTON
850 AM PDT MON MAR 16 2009COR
This forecast applies to back country avalanche terrain below
7000 feet and does not apply to highways or operating ski areas.
ORZ011-171600-
&&
ZONE AVALANCHE FORECASTS
*MT HOOD AREA
Monday: locally high danger on southeast through northeast
facing slopes above 4 to 5000 feet otherwise considerable
danger below 7000 feet
Monday night: slightly decreasing danger
Tuesday morning: increasing considerable danger below 7000
feet becoming locally high on northeast through southeast
exposures above about 4 to 5000 feet and considerable
elsewhere
Tuesday afternoon: slightly decreasing danger
Tuesday night: increasing avalanche danger, especially
Olympics and north Cascades
SNOWPACK SYNOPSIS
A variety of weak layers developed last week have been
loaded by increasing amounts of new wind transported snow.
This has created significant avalanche danger with locally
high danger existing on many lee slopes where human and
natural slides are likely. Elsewhere a considerable danger
exists with human triggered avalanches probable. As a
result, back country travel is not recommended in steeper
lee terrain and conservative decision making, careful route
selection and good travel habits are essential to help
mitigate the danger.
MONDAY, MONDAY NIGHTCORRECTED
Light to moderate snow should increase later Monday morning,
becoming moderate to heavy Monday afternoon. Along with
slight but limited warming and increasing winds, this
expected weather should maintain or increase existing
considerable to high avalanche danger, especially on wind
loaded slopes. Slightly decreasing snow and winds Monday
night should allow for a slight decrease in the danger.
TUESDAY
Increasing moderate to heavy snow and moderate to strong
winds Tuesday morning should produce another significant
increase in the danger with considerable to high danger
likely. Gradually decreasing and more showery precipitation
is expected Tuesday afternoon along with slightly diminished
winds. Along with continued relatively low freezing levels
this should allow for a slight decrease in the danger except
in areas receiving any sun breaks.
TUESDAY NIGHT
The next front should push onshore Tuesday night, mainly in
the Olympics and northern WA Cascades where moderate to
heavy rain or snow is expected along with increasing winds
and slow warming. This should produce generally increasing
danger in the north, where high danger should slowly spread
to progressively lower elevations. In the Mt Hood area, less
significant precipitation and lighter winds are expected.
However, along with the warming, this weather should help
maintain or slightly increase the still considerable danger.
&&
Backcountry travelers should be aware that elevation and
geographic distinctions are approximate and that a transition
zone between dangers exists. Remember there are avalanche safe
areas in the mountains during all levels of avalanche danger.
Contact local authorities in your area of interest for further
information.
NWAC weather data and forecasts are also available by calling
206-526-6677 for Washington, 503-808-2400 for the Mt Hood area,
or by visiting our Web site at www.nwac.us.
The Avalanche Danger Scale is being revised for next winter.
Please help ensure this product is effective by completing a
short survey found at this link:
http://surveys.globalepanel.com/wix/p319164581.aspx.
Moore/Northwest Weather and Avalanche Center
$$
000
WWUS86 KPQR 161541
SABOR
SUMMARY BACKCOUNTRY AVALANCHE FORECAST FOR THE MT HOOD AREA
NORTHWEST WEATHER AND AVALANCHE CENTER SEATTLE WASHINGTON
845 AM PDT MON MAR 16 2009
This forecast applies to back country avalanche terrain below
7000 feet and does not apply to highways or operating ski areas.
ORZ011-171600-
&&
ZONE AVALANCHE FORECASTS
*MT HOOD AREA
Monday: locally high danger on southeast through northeast
facing slopes above 4 to 5000 feet otherwise considerable
danger below 7000 feet
Monday night: slightly decreasing danger
Tuesday morning: increasing considerable danger below 7000
feet becoming locally high on northeast through southeast
exposures above about 4 to 5000 feet and considerable
elsewhere
Tuesday afternoon: slightly decreasing danger
Tuesday night: increasing avalanche danger, especially
Olympics and north Cascades
SNOWPACK SYNOPSIS
A variety of weak layers developed last week have been
loaded by increasing amounts of new wind transported snow.
This has created significant avalanche danger with locally
high danger existing on many lee slopes where human and
natural slides are likely. Elsewhere a considerable danger
exists with human triggered avalanches probable. As a
result, back country travel is not recommended in steeper
lee terrain and conservative decision making, careful route
selection and good travel habits are essential to help
mitigate the danger.
MONDAY, MONDAY NIGHT
Light to moderate snow should increase later Monday morning,
becoming moderate to heavy Monday afternoon. Along with
slight but limited warming and increasing winds, this
expected weather should maintain or increase existing
considerable to high avalanche danger, especially on wind
loaded slopes.
TUESDAY
Increasing moderate to heavy snow and moderate to strong
winds Tuesday morning should produce another significant
increase in the danger with considerable to high danger
likely. Gradually decreasing and more showery precipitation
is expected Tuesday afternoon along with slightly diminished
winds. Along with continued relatively low freezing levels
this should allow for a slight decrease in the danger except
in areas receiving any sun breaks.
TUESDAY NIGHT
The next front should push onshore Tuesday night, mainly in
the Olympics and northern WA Cascades where moderate to
heavy rain or snow is expected along with increasing winds
and slow warming. This should produce generally increasing
danger in the north, where high danger should slowly spread
to progressively lower elevations. In the Mt Hood area, less
significant precipitation and lighter winds are expected.
However, along with the warming, this weather should help
maintain or slightly increase the still considerable danger.
&&
Backcountry travelers should be aware that elevation and
geographic distinctions are approximate and that a transition
zone between dangers exists. Remember there are avalanche safe
areas in the mountains during all levels of avalanche danger.
Contact local authorities in your area of interest for further
information.
NWAC weather data and forecasts are also available by calling
206-526-6677 for Washington, 503-808-2400 for the Mt Hood area,
or by visiting our Web site at www.nwac.us.
The Avalanche Danger Scale is being revised for next winter.
Please help ensure this product is effective by completing a
short survey found at this link:
http://surveys.globalepanel.com/wix/p319164581.aspx.
Moore/Northwest Weather and Avalanche Center
$$
000
WWUS86 KPQR 151621
SABOR
SUMMARY BACKCOUNTRY AVALANCHE FORECAST FOR THE MT HOOD AREA
NORTHWEST WEATHER AND AVALANCHE CENTER SEATTLE WASHINGTON
900 AM PDT SUN MAR 15 2009
This forecast applies to back country avalanche terrain below
7000 feet and does not apply to highways or operating ski areas.
ORZ011-161600-
&&
ZONE AVALANCHE FORECASTS
*MT HOOD AREA-
...AVALANCHE WARNING SUNDAY...
Sunday: Increasing high avalanche danger above 5000 feet and
considerable danger below.
Sunday night: Slightly decreasing danger becoming high above
6000 feet and considerable below.
Monday and Monday night: Considerable avalanche danger below
7000 feet.
SNOWPACK SYNOPSIS
A series of strong storms began Saturday morning. Thus far
the Mt Hood area has received 1 to 2 feet of new snow. The
new snow has fallen on several weak layers or crust surfaces
and has been accompanied by strong winds. This has created
mostly unstable snow above about 5000 feet. Backcountry
travel in avalanche terrain is not recommended at higher
elevations Sunday.
FORECASTS
SUNDAY AND SUNDAY NIGHT
Another in the series of strong fronts is moving across the
Northwest Sunday. Heavy snowfall and increasing winds are
expected through the day, especially higher elevations where
strongest winds are expected. This should lead to mostly
unstable snow with increasing natural avalanches. Moderate
snow showers Sunday night and gradually decreasing winds
should allow for a slow decrease in danger.
MONDAY AND MONDAY NIGHT
Continued moderate southwest winds and moderate snow showers
should allow for slight settlement of unstable layers.
However, a significant danger should persist Monday,
especially at higher elevations near ridges. Heightened
caution is advised until unstable snow has time to
stabilize.
&&
Backcountry travelers should be aware that elevation and
geographic distinctions are approximate and that a transition
zone between dangers exists. Remember there are avalanche safe
areas in the mountains during all levels of avalanche danger.
Contact local authorities in your area of interest for further
information.
NWAC weather data and forecasts are also available by calling
206-526-6677 for Washington, 503-808-2400 for the Mt Hood area,
or by visiting our Web site at www.nwac.us.
Kramer/Northwest Weather and Avalanche Center
$$
000
WWUS86 KPQR 141621
SABOR
SUMMARY BACKCOUNTRY AVALANCHE FORECAST FOR THE MT HOOD AREA
NORTHWEST WEATHER AND AVALANCHE CENTER SEATTLE WASHINGTON
900 AM PDT SAT MAR 14 2009
This forecast applies to back country avalanche terrain below
7000 feet and does not apply to highways or operating ski areas.
ORZ011-151600-
&&
ZONE AVALANCHE FORECASTS
*MT HOOD AREA-
Saturday morning: Moderate avalanche danger above 5000 feet
and low below.
Saturday afternoon and night: Increasing considerable
avalanche danger above 5000 feet and moderate below.
Early Sunday morning: Briefly decreasing danger.
Later Sunday morning and afternoon: Increasing considerable
avalanche danger above 4-5000 feet and moderate below.
Sunday night: Considerable avalanche danger above 4-5000
feet and moderate below.
SNOWPACK SYNOPSIS
The previous storms late last week and last weekend
deposited generally 2 to 3 feet of snow with strong winds
that lead to an active avalanche cycle. Sunshine and gradual
warming through the week allowed for settlement and
stabilization of the snow pack. A sun crust has formed on
most sunny exposures while settled powder and surface hoar
exist on shaded slopes. Another round of snowfall has begun
early Saturday morning with only light amounts of new snow
having accumulated early Saturday.
FORECASTS
SATURDAY AND SATURDAY NIGHT
A passing frontal band Saturday morning should bring
increasing light snowfall with strengthening winds. Another
fast moving disturbance late Saturday should bring moderate
to heavy snowfall and continued strong winds. This weather
should cause an increasing danger through the day as new
unstable layers are deposited on lee slopes, especially east
facing slopes at higher elevations. Continued moderate to
heavy snow overnight should maintain or increase the danger.
Increasing caution is urged along with good travel habits by
later Saturday.
SUNDAY AND SUNDAY NIGHT
Another strong front is expected to cross the Northwest
later Sunday morning and afternoon. This is likely result in
an increase in avalanche danger on Sunday, especially higher
elevations where strongest winds are expected. Light snow
showers Sunday night and decreasing winds should allow for a
slow decrease in danger.
&&
Backcountry travelers should be aware that elevation and
geographic distinctions are approximate and that a transition
zone between dangers exists. Remember there are avalanche safe
areas in the mountains during all levels of avalanche danger.
Contact local authorities in your area of interest for further
information.
NWAC weather data and forecasts are also available by calling
206-526-6677 for Washington, 503-808-2400 for the Mt Hood area,
or by visiting our Web site at www.nwac.us.
Kramer/Northwest Weather and Avalanche Center
$$
000
WWUS86 KPQR 132054
SABOR
SUMMARY BACKCOUNTRY AVALANCHE FORECAST FOR THE MT HOOD AREA
NORTHWEST WEATHER AND AVALANCHE CENTER SEATTLE WASHINGTON
200 PM PDT FRI MAR 13 2009CORRECTED ZONES
This forecast applies to back country avalanche terrain below
7000 feet and does not apply to highways or operating ski areas.
ORZ011-141600-
&&
ZONE AVALANCHE FORECASTS
*MT HOOD AREA-
Friday morning to Saturday morning: Moderate avalanche
danger at and above 5000 feet and low below.
Saturday afternoon and night: Increasing considerable
avalanche danger at and above 5000 feet and moderate below.
OUTLOOK FOR SUNDAY
Further increasing avalanche danger.
SNOWPACK SYNOPSIS
The last 2 storms were seen late last week and over the
weekend. Quite a few avalanches were seen mainly during the
first storm. But there should have been some consolidating
and stabilizing after warmer temperatures on Thursday and
cooler temperatures Thursday night.
FORECASTS
FRIDAY AND FRIDAY NIGHT
Warmer and weaker surface snow may still be seen on steeper
slopes facing the sun. You should continue to use increasing
caution during the midday and afternoon hours as natural or
triggered avalanches seem possible on such slopes if surface
snow becomes damp or wet to more than a few inches.
SATURDAY MORNING
A weakening front should move to over the Northwest on
Saturday morning. This should not initially cause a major
change in snow conditions.
SATURDAY AFTERNOON AND NIGHT
A strong front is expected to move over the Northwest on
Saturday afternoon and night. This should make triggered
avalanches probable due to new layers on lee slopes.
Conservative decision making and good travel habits should
become important by later Saturday.
OUTLOOK TO SUNDAY
Another strong front is expected to cross the Northwest on
Sunday. This is likely result in an increase in avalanche
danger on Sunday.
&&
Backcountry travelers should be aware that elevation and
geographic distinctions are approximate and that a transition
zone between dangers exists. Remember there are avalanche safe
areas in the mountains during all levels of avalanche danger.
Contact local authorities in your area of interest for further
information.
NWAC weather data and forecasts are also available by calling
206-526-6677 for Washington, 503-808-2400 for the Mt Hood area,
or by visiting our Web site at www.nwac.us.
Ferber/Northwest Weather and Avalanche Center
$$
000
WWUS86 KPQR 132039
SABOR
SUMMARY BACKCOUNTRY AVALANCHE FORECAST FOR THE MT HOOD AREA
NORTHWEST WEATHER AND AVALANCHE CENTER SEATTLE WASHINGTON
130 PM PDT FRI MAR 13 2009
This forecast applies to back country avalanche terrain below
7000 feet and does not apply to highways or operating ski areas.
ORZ011-141600-
&&
ZONE AVALANCHE FORECASTS
*MT HOOD AREA-
Friday morning to Saturday morning: Moderate avalanche
danger 5000 feet and low below.
Saturday afternoon and night: Increasing considerable
avalanche danger above 5000 feet and moderate below.
OUTLOOK FOR SUNDAY
Further increasing avalanche danger.
SNOWPACK SYNOPSIS
The last 2 storms were seen late last week and over the
weekend. Quite a few avalanches were seen mainly during the
first storm. But there should have been some consolidating
and stabilizing after warmer temperatures on Thursday and
cooler temperatures Thursday night.
FORECASTS
FRIDAY AND FRIDAY NIGHT
Warmer and weaker surface snow may still be seen on steeper
slopes facing the sun. You should continue to use increasing
caution during the midday and afternoon hours as natural or
triggered avalanches seem possible on such slopes if surface
snow becomes damp or wet to more than a few inches.
SATURDAY MORNING
A weakening front should move to over the Northwest on
Saturday morning. This should not initially cause a major
change in snow conditions.
SATURDAY AFTERNOON AND NIGHT
A strong front is expected to move over the Northwest on
Saturday afternoon and night. This should make triggered
avalanches probable due to new layers on lee slopes.
Conservative decision making and good travel habits should
become important by later Saturday.
OUTLOOK TO SUNDAY
Another strong front is expected to cross the Northwest on
Sunday. This is likely result in an increase in avalanche
danger on Sunday.
&&
Backcountry travelers should be aware that elevation and
geographic distinctions are approximate and that a transition
zone between dangers exists. Remember there are avalanche safe
areas in the mountains during all levels of avalanche danger.
Contact local authorities in your area of interest for further
information.
NWAC weather data and forecasts are also available by calling
206-526-6677 for Washington, 503-808-2400 for the Mt Hood area,
or by visiting our Web site at www.nwac.us.
Ferber/Northwest Weather and Avalanche Center
$$
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