Tip:
Highlight text to annotate it
X
welcome to the national weather service monday whether briefing
my name is greg cook and i will be covering the expected weather for the
week of tuesday december eighteen through monday december twenty fourth
since forecasts are subject to change please do not use this presentation
after tuesday the eighteenth
tuesday
will not be nearly as wendy s today that's on day
light snow showers expected on tuesday but valley accumulations will be light
our next significant snow event is expected to develop on wednesday and
carry into thursday
the active pattern is expected
to continue friday into sunday with several quick moving disturbances
bringing the potential for snow
or rain depending on your location
this graphic shows the snow reports received by the national weather service
from whether observers across the endless inland northwest on monday
the biggest holdouts occurred along the east slopes of the cascades
on monday morning where places like leavenworth plane and upper portions of
lakeshore and received twelve to fifteen inches of new snow
places around san point mdb honors fairy also received seven to as much as
fifteen inches of new snow
the spokane area received about three to five inches of snow before precipitation
changed
terrain early on monday morning
mild and windy conditions today led to a rapid melting of snow across the
pollutes the columbia basin and the spokane area
this map
show snow depth
and it's generated by a division of noah
that uses snow measurements and satellite information to make a map of
the snow depth
as of monday morning the northern two-thirds of eastern washington harris
had snow on the ground
depts is
great as eight inches were common from the east slopes of the cascades through
the oca noggin highlands to the sandpoint area
our next know that is expected to begin on wednesday continue into thursday
system will likely be colder than or monday morning storm
at this time we are not anticipating a change terrain
for many of the places that changed to rain
with the monday morning of a
spokane correlating moscow davenport deer park in grand cooley should receive
all snow with this event wednesday three thursday
to meet with accumulations around lewiston poland winchester and pomeroy
will be tougher to forecasts in snow levels may be high enough
to limit acute accumulations to the higher terrain
the weather pattern for
thursday
through sunday will be active and potentially snowy for the in the
northwest
the storm track is not anticipated change much first three or four days
high pressure over southwest canada will provide a reservoir of cold air that
will likely
block
cold air into northern washington and far north idaho
low pressure off the coast will provide an abundance of moisture and direct
several upper-level disturbances into the pacific northwest
the collision of moisture and cold air will produce areas of wintry
precipitation
this map shows where we generally see snow verses rein in these type of
patterns
several rounds of precipitation are expected for friday through sunday
the east slopes of the cascades neocon ogden highlands
in the mountains of northern washington will have the best chance of
experiencing several rounds of snow
precipitation could fall in the form of rain or snow south of i-ninety
the tri-cities floor snake river valley in lewiston clarkston valley have a good
chance of receiving mainly rain
area circled with the orange circles here are
areas where we could see
potentially moderate to heavy accumulations in that time period a
friday through sunday
the seven dept
seven-day forecasts graphic for spokane shows the overall weather trends through
sunday
today that's monday will be the warmest day of the week
courtesy of strong and mild west winds
solid red and blue lines show the forecast highs and lows for this week
from tuesday through the weekend daytime temperatures will be at or below average
the dashed lines show average temperatures
the best chance for precipitation is anticipated when seemed to
thursday
friday through the weekend will be on settled with continued chances for snow
moving on to the eight to fourteen gal look which is valid december
twenty-fifth through the thirty first calls for continuation of above average
chances for
cooler than normal temperatures
near average chances for precipitation suggests that a potentially snow we
pattern will persist
into the holidays
in summary our next significant widespread significance no
isn't his bid wednesday and thursday
the threat for snow will continue for north central washington
and the northern regions of the in the northwest friday through sunday
questions about snow levels for friday through sunday lead to a good deal of
uncertainty about the potential for accumulations
for eastern washington and southern idaho panhandle so please continue to
monitor the forecast
for the most up-to-date weather
again you can find
weather information that weather dot gov slash spokane
like this on face book follow us on twitter
receive
weather forecasts on all of the radio
and tune in to youtube for the latest whether briefings