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THE VOICE OF THE NATIONAL WEATHER SERVICE
All National Weather Service offices operate VHF
radio broadcasts on a taped cycle to
provide the population with the latest weather observations, forecasts,
and warning information 24 hours a day. These broadcasts, called NOAA Weather
Radio (NWR), can be heard using specially built radios. The broadcast can
also be heard on some scanners. The signal generally can be heard in a
40-mile radius from the transmitter site, although this can vary greatly
depending upon your terrain and surroundings. NWR radios cost as little
as $20, and most cost less than $60.
The routine cycle can be interrupted to broadcast
life-threatening warning information, such as a severe thunderstorm, tornado,
flash flood, or blizzard warning. Most weather radios are designed with
an alarm feature to warn of the impending hazard. However, this alarm will
sound or LED will flash whenever a warning was issued for anywhere in the
listening area. Certain newer radios are equipped with digital decoding
technology, called Specific Area Message Encoding (SAME), to sound the
alarm only for counties you have chosen. SAME codes are the driving force
behind the Emergency Alert System (formerly known as the Emergency Broadcast
System). Understandably, these radios cost a bit more, but still aren't
excessively expensive.
The computer
that controls NWR is called the Console
Replacement System (CRS). There are several reasons why the radio is controlled
by a computer. Most important, a computer can capture products as they
are issued, encode the SAME message (if applicable) quickly and automatically,
and rebroadcast them in a matter of seconds, saving valuable time. This
is especially true during active warning situations. Since we operate six
radios (soon to be seven), if the warning is encoded, read, and recorded
by a human, there could be a significant time lag between warning issuance
and broadcast.
A NOAA Weather Radio with the Alarm/Alert feature
can be a life saver in the event of dangerous weather in your community.
Hopefully, the day will soon come when NWR will be as commonplace in people's
homes as a smoke detector.
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