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wwus76 ksto 201115

urgent - weather message
national weather service sacramento ca
315 am pst tue feb 20 2018

...widespread temperatures well below freezing...

.a very cold airmass has moved over northern california. the 
coldest temperatures are expected this morning, with another 
night of freezing temperatures tonight into wednesday morning.

shasta lake area / northern shasta county-
northern sacramento valley-central sacramento valley-
southern sacramento valley-carquinez strait and delta-
northern san joaquin valley-clear lake/southern lake county-
northeast foothills/sacramento valley-motherlode-
including the cities of shasta dam, redding, red bluff, chico, 
oroville, marysville/yuba city, sacramento, fairfield/suisun, 
stockton, modesto, lakeport, paradise, grass valley, and jackson
315 am pst tue feb 20 2018

...hard freeze warning remains in effect until 8 am pst

* temperature...overnight low temperatures of 22 to 29 degrees.

* timing....coldest tuesday morning, widespread lows in the low 
  to upper 20s with several hours of subfreezing temperatures 

* impacts...freezing temperatures can damage or kill plants and 
  trees that are sensitive to cold. consider wrapping external 
  pipes which may be vulnerable to freezing. please check on the 
  elderly and make sure your animals have a warm shelter. 

precautionary/preparedness actions...

a hard freeze warning means sub-freezing temperatures are
imminent or highly likely. these conditions will kill crops and
other sensitive vegetation.


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