Issued when heavy rain will cause flooding of streets and low-lying places in urban areas. Also used if small rural or urban streams are expected to reach or exceed bankfull. Some damage to homes or roads could occur. A preliminary notification that conditions may be favorable for the development of avalanches in mountain regions. Travel may be hampered.
Strong winds create blowing snow by picking up old or new snow.
A short-term forecast designed to give specific, detailed forecast information for the next 1 to 6 hours on a county basis. Non-severe, advisory, and warning information is contained in these forecasts which are routinely issued several times per day, and more often in some events. May be used for 1 or 2 inch snowfalls if occurring at the beginning of the snow season or after a prolonged period between snow events. Some mountain locations have snow advisories issued for 4 to 7 inch accumulations in 12 hours. The following terms WARN the public of more serious winter weather situations that may cause impossible traveling conditions and could pose a threat to life and property.