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wwus86 ksto 171329

special weather statement
national weather service sacramento ca
529 am pst tue jan 17 2017

shasta lake area / northern shasta county-
burney basin / eastern shasta county-northern sacramento valley-
central sacramento valley-southern sacramento valley-
carquinez strait and delta-northern san joaquin valley-
mountains southwestern shasta county to northern lake county-
clear lake/southern lake county-
northeast foothills/sacramento valley-motherlode-
western plumas county/lassen park-
west slope northern sierra nevada-
including the cities of shasta dam, burney, redding, red bluff, 
chico, oroville, marysville/yuba city, sacramento, 
fairfield/suisun, stockton, modesto, alder springs, lakeport, 
paradise, grass valley, jackson, chester, quincy, and blue canyon
529 am pst tue jan 17 2017

...stormy weather returning to northern california wednesday...

a series of pacific frontal systems will bring an end to the
current period of dry weather beginning with the passage of the
first in the series of storms on wednesday. light precipitation
could begin falling over northern california as early as tonight
with heavier rain and mountain snow pushing over northern
california on wednesday. 

this first moderately strong weather system will bring between
three quarters and one and a half inches of rainfall to the valley
from mid day wednesday to mid day thursday. some foothill
locations could see up to 3 inches of rainfall. snow levels will
start out moderately high at between 5000 and 6000 feet but then
lower to around 4000 feet by thursday afternoon. several inches of
snow will be possible above 4000 feet with up to a foot and a half
or more of snow possible highest elevations. 

in addition to the rain and snow...gusty winds are likely with the
wednesday/thursday system. winds gusts to 30 mph are forecast for
the valley and up to 40 mph over the mountains. white-out 
conditions will be possible at times over the sierra cascade 

after a break on thursday afternoon and evening another storm
system will hit northern california on friday. this system will be
similar to the previous system in precipitation amounts and wind
but will come with lower snow levels generally between 3000 and
4000 feet. another pacific storm is forecast to move through
around sunday bringing still more rain, wind and mountain snow but
with even lower snow levels between 2000 and 3000 feet. 

travel impacts over the mountains are likely with each of these 
weather systems with chain controls and delays likely. local 
flooding potential will return as well especially as rainfall 
accumulation totals rise with each storm. those that may be 
impacted by this series of storms should continue to monitor the 
latest forecasts.


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