URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SACRAMENTO CA 331 AM PST MON DEC 9 2013 ...VERY COLD OVERNIGHT TEMPERATURES EXPECTED THROUGH WEDNESDAY MORNING... .A VERY COLD AND DRY AIRMASS ORIGINATING FROM CANADA HAS SETTLED INTO NORTHERN CALIFORNIA AND WILL PERSIST OVER THE INTERIOR OF NORTHERN CALIFORNIA THROUGH MID-WEEK. OVERNIGHT LOW TEMPERATURES WELL BELOW FREEZING ARE EXPECTED THROUGH AT LEAST WEDNESDAY MORNING. ...HARD FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM PST WEDNESDAY BELOW 2000 FEET...
