Public Information Statement
Issued by NWS St. Louis, MO

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NOUS43 KLSX 161422

Public Information Statement
National Weather Service Saint Louis MO
822 AM CST Wed Nov 16 2016

822 AM CST Wed Nov 16 2016

...Illinois Winter Weather Preparedness Week...
...Missouri Winter Weather Awareness Day...

The weather sure doesn`t seem remind you of winter. High
temperatures today will be in the 60s and 70s with possible record
high temperatures for Thursday. Remember though, you are in the
Midwest and the weather can do a complete turn in 24 hours or
less. Winter will arrive so why not make some preparations now.

Make sure you understand the terminology used by the National
Weather Service (NWS) so you know what to expect. The following
applies to counties covered by the NWS St. Louis. Criteria will
vary in other parts of Missouri and Illinois.

Winter Storm Watch: A watch is issued when the risk of hazardous
winter weather has increased significantly, there is a strong
possibility it will reach warning criteria, and falls in the 12 -
48 hour portion of the forecast.

Warning: Warnings are issued for events that can be life
threatening. They are issued when the event is occurring, is
imminent, or has a very high probability of occurrence.

Blizzard Warning: Sustained wind or frequent gusts greater than 35
mph accompanied by falling and/or blowing snow reducing the
visibility to less than 1/4 mile for 3 hours or more.

Ice Storm Warning: Freezing rain producing ice accumulations of
1/4 inch or more.

Winter Storm Warning: Issued for snow events of 6 inches or more,
sleet accumulation of 1/2 inch or more, or a combination of
winter precipitation which will produce life threatening

Wind Chill Warning: Wind chill values of minus 25 degrees F or

Advisory: Advisories are issued for lesser events that while
presenting an inconvenience, do not pose an immediate threat of
death, injury or significant property damage.

Winter Weather Advisory: Depending on the time of occurrence and
the temperature, an advisory can be issued for snowfall of 1 - 5
inches, for sleet accumulations of less than 1/2 inch, for light
freezing rain of less than 1/4 inch, or for a combination of
winter precipitation that will produce hazardous conditions.

Wind Chill Advisory: Wind chill values of minus 15 to minus 24
degrees F.


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