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-------- Original Message --------
255
NOUS41 KWBC 251152
PNSWSH
Service Change Notice 13-67
National Weather Service Headquarters Washington DC
753 AM Fri EDT Oct 25 2013
To: Subscribers:
-Family of Services
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
-NOAAPort
Other NWS partners and employees
From: Cynthia Abelman
Chief, Aviation Services Branch
Subject: Aviation Winter Weather Dashboard Operational
November 25, 2013
Effective Monday, November 25, 2013, at 1800 Coordinated
Universal Time (UTC), the NWS Aviation Weather Center in Kansas
City, MO, will implement the Aviation Winter Weather Dashboard as
an operational product.
Beginning November 25, 2013, Aviation Winter Weather Dashboard
will be operationally available 24 hours a day, 7 days a week.
The Aviation Winter Weather Dashboard (AWWD) depicts a potential
winter weather impact to the core 30 airports. The AWWD is
updated four times per day. The website display indicates the
potential impact to each airport through a matrix of color coded
boxes that depict nominal (green), slight (yellow), moderate
(orange), and high (red) impact through 87 forecast hours. The
impact information is calculated using the operational Short-
Range Ensemble Forecast (SREF) numerical weather prediction
system and climatology.
The AWWD was developed to support the Federal Aviation
Administration Air Traffic Control System Command Center. AWWD
supports long-range strategic winter weather planning by
providing guidance on the impact from winter weather at major
airports.
The Aviation Winter Weather Dashboard will only be available at:
http://www.aviationweather.gov/decisionsupport/winterdashboard
The AWWD renders the potential impact to each airport, at
3-hourly forecast intervals, based on certain thresholds of
forecast winter weather conditions. The probability of
accumulated snowfall/ice pellets, accumulated freezing rain, and
visibility are used to determine the particular impact category
assigned to each airport. The airports are split into four
separate impact groups, based upon the airports ability to
operate during winter weather conditions, which, in turn, is
based on annual snowfall climatology. Each group has a specific
probabilistic threshold for snowfall/ice pellets, freezing rain,
and visibility that determine the category.
For questions about this experimental forecast, please contact:
Michael Pat Murphy
Warning Coordination Meteorologist
Aviation Weather Center
Kansas City, MO 64153
Phone: 816-584-72048
Email: michael.pat.murphy@xxxxxxxx
National NWS Technical Implementation Notices are available at:
http://www.nws.noaa.gov/om/notif.htm
$$
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