[nws-changes] 20101022:chg in legend box text of sigwx charts fwd: ADMIN NOTICE NOUS41 KWBC

• To: nws-changes@xxxxxxxxxxxxxxxx
• Subject: [nws-changes] 20101022:chg in legend box text of sigwx charts fwd: ADMIN NOTICE NOUS41 KWBC
• From: Linda Miller <lmiller@xxxxxxxxxxxxxxxx>
• Date: Fri, 22 Oct 2010 13:10:14 -0600

-------- Original Message --------

647
NOUS41 KWBC 221625
PNSWSH

Service Change Notice 10-54
National Weather Service Headquarters Washington DC
1225 PM Fri EDT Oct 22 2010

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:   Change in legend box text of SIGWX charts
           Effective November 17, 2010.

Effective Thursday, November 17, 2010, at 1245 Coordinated
Universal Time (UTC), World Area Forecast Center Washington will
make the following changes to the legend text box of Significant
Weather (SIGWX) high and medium level charts:

- The addition of the phrase "Provided by WAFC Washington" will
  appear beneath the first line of the legend text box
- The text related to SIGMET, ADVISORIES, NOTAM and ASHTAM will
  be changed to read as follows: "CHECK SIGMET, ADVISORIES FOR
  TC AND VA, ASHTAM AND NOTAM FOR VA"

These changes are being made to adhere to the latest version of
the International Civil Aviation Organizations International
Standards and Recommended Practices Annex 3.

In accordance with the World Meteorological Organization and the
World Area Forecast System of the International Civil Aviation
Organization, high level significant weather (SIGWX) forecasts
are provided for the enroute portion of international flights.
The Aviation Weather Center provides a suite of SIGWX forecast
products for the World Area Forecast Center (WAFC) in
Washington, D.C. These products are used by airline dispatchers
for flight planning and weather briefing before departure, and
by flight crew members during flight.

High level SIGWX charts are valid at specific fixed times: 0000,
0600, 1200 and 1800 UTC. They show significant enroute weather
phenomena over a range of flight levels from 250 to 630 and
associated surface weather features.

WAFC Washington SIGWX High and Medium Level Charts are
online at:

  http://aviationweather.gov/products/swh/
and
  http://aviationweather.gov/products/swm/

If you have any questions about this change, please contact:

  Michael Pat Murphy
  Warning Coordination Meteorologist
  Aviation Weather Center
  7220 NW 101ST Terrace
  Kansas City, MO 64153
  816-584-72048
  michael.pat.murphy@xxxxxxxx

National Technical Implementation Notices are online at:

  http://www.nws.noaa.gov/om/notif.htm

$$