Union
Forecasts for South Dakota  |   Return to US Severe Weather
Wind Advisory
Expires 9:00 PM EDT on May 22, 2012

Statement as of 2:27 PM CDT on May 22, 2012


... Wind Advisory remains in effect until 8 PM CDT this evening...

* weather conditions... south winds of 25 to 35 mph with gusts to
40 to 45 mph are expected to continue this afternoon. The winds will
decrease to 15 to 30 mph during the evening hours.

Precautionary/preparedness actions...

A Wind Advisory is issued when sustained winds are forecast to be
31 to 39 mph or gusts will range between 46 and 57 mph. Winds of
these magnitudes may cause minor property damage without extra
precautions. Motorists in high profile vehicles should use
caution until the winds subside.

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Public Information Statement
Statement as of 5:58 PM CDT on May 22, 2012


... Severe Thunderstorm Watch safety rules...

A Severe Thunderstorm Watch means that conditions are favorable for
the development of severe weather in the designated area. During a
watch there is no cause for immediate concern. You should go about
your normal business... but be on the lookout and keep up to date on
the latest weather developments. Public safety officials should
activate prearranged plans.

A Severe Thunderstorm Warning... on the other hand... means that a
severe thunderstorm has been sighted or indicated by radar. People in
the path of the storm should take immediate action to safeguard
themselves and their family.

Technically speaking... a severe thunderstorm is defined as having
wind gusts which exceed 58 mph and/or hail at least 1 inch in
diameter. However... as these storms develop... they can be accompanied
by tornadoes. Listen to NOAA Weather Radio or other local media to
learn if a warning has been issued for your area. Also... keep a close
watch on the thunderstorms as tornadoes can form quickly. If you see
a tornado... move quickly into a basement. If none is available... seek
shelter in a small interior room on the lowest floor and stay away
from outside walls... doors and windows. In schools... factories or
other institutional type buildings... stay out of auditoriums and
gymnasiums.

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