480  
WWUS76 KSTO 182252  
NPWSTO  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SACRAMENTO CA  
252 PM PST SUN FEB 18 2018  
   
..WIDESPREAD TEMPERATURES BELOW FREEZING EXPECTED
 
 
.A VERY COLD AIRMASS ORIGINATING FROM WESTERN CANADA WILL BEGIN  
TO MOVE INTO NORTHERN CALIFORNIA TONIGHT. THE COLDEST  
TEMPERATURES ARE EXPECTED MONDAY NIGHT INTO TUESDAY MORNING, WITH  
ANOTHER NIGHT OF FREEZING TEMPERATURES TUESDAY NIGHT.  
 
WIDESPREAD FROST IS EXPECTED. AGRICULTURAL IMPACTS COULD BE  
SIGNIFICANT, DUE TO AN EARLY BLOOM FROM UNUSUALLY MILD WEATHER IN  
RECENT WEEKS. PEOPLE SHOULD TAKE STEPS TO PROTECT SENSITIVE  
PLANTS, OUTDOOR PETS, AND OUTDOOR PIPES.  
 
CAZ013-015>019-064-066-067-191200-  
/O.CON.KSTO.FZ.W.0001.180219T1000Z-180221T1600Z/  
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  
252 PM PST SUN FEB 18 2018  
 
...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM MONDAY TO 8 AM PST  
WEDNESDAY...  
 
* TEMPERATURE...OVERNIGHT LOW TEMPERATURES OF 23 TO 30 DEGREES.  
 
* TIMING....COLDEST TUESDAY MORNING, WITH WIDESPREAD LOWS IN THE  
MID TO UPPER 20S AND SEVERAL HOURS OF SUBFREEZING TEMPERATURES  
POSSIBLE.  
 
* IMPACTS...FREEZING TEMPERATURES CAN DAMAGE OR KILL PLANTS 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 FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR  
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER  
SENSITIVE VEGETATION.  
 

 
 
INTERACT WITH US VIA SOCIAL MEDIA  
WWW.FACEBOOK.COM/NWS.SACRAMENTO  
WWW.TWITTER.COM/NWSSACRAMENTO  
 

 
 
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