Tropical Weather Outlook  (Source: NHC web site)

World Meteorological Organization (WMO) and AWIPS (in parenthesis) headers:
ABNT20 KNHC (MIATWOAT) - Atlantic
ABPZ20 KNHC (MIATWOEP) - E. Pacific

The Tropical Weather Outlook is a discussion of significant areas of disturbed
weather and their potential for development out to 48 hours. It includes (when
possible) a nontechnical explanation of the meteorology behind the outlook.

Beginning in 2009, the NHC will issue Special Tropical Weather Outlooks when
important changes with areas of disturbed weather need to be conveyed before
the next scheduled release of the Tropical Weather Outlook (TWO). The Special
TWO can also be used on a recurring basis for disturbances outside of the
normal hurricane season when routine TWOs are not issued.

The Special TWOs will be issued under the same product headers as the TWO and
they will replace the previously issued regular or special TWO. In the past,
when significant changes required an update of the TWO a separate product, the
Special Tropical Disturbance Statement (DSA), was issued in these situations.
The NHC is eliminating the Special Tropical Disturbance Statement (DSA), and
the only NHC product that contains information on genesis information will be
the Tropical Weather Outlook. Please note the Tropical Weather Outlook has a
companion Graphical Tropical Weather Outlook that will be updated at the same
time.

Tropical Weather Outlooks also include a brief descriptions of any tropical or
subtropical cyclones in the region. It also includes the WMO and AWIPS headers
of where to find more information on an active cyclone during the first 24
hours of existence. 

During hurricane season, Tropical Weather Outlooks are issued four times a
day. Atlantic outlooks are issued at 2:00 AM EDT, 8:00 AM EDT, 2:00 PM EDT,
and 8:00 PM EDT. They are transmitted under WMO header ABNT20 KNHC and AWIPS
header MIATWOAT. 

Eastern Pacific outlooks are issued at 5:00 AM PDT, 11:00 AM PDT, 5:00 PM PDT,
and 11:00 PM PDT. They are transmitted under WMO header ABPZ20 KNHC and AWIPS
header MIATWOEP. 

The products will be issued one hour earlier for both basins during Standard
Time.