NOUS41 KWBC 271810



Service Change Notice 14-19

National Weather Service Headquarters Washington DC

215 PM EDT Thu Mar 27 2014


To:      Subscribers:

         -Family of Services

         -NOAA Weather Wire Service

         -Emergency Manager Weather Information Network


         Other NWS partners and NWS employees


From:    Eli Jacks

         Chief, Fire and Public Weather Services Branch


Subject: Change in Some Public Weather Forecast Zones for WFO

         Seattle, WA, Effective June 12, 2014


Effective Thursday, June 12, 2014, at 1200 Coordinated Universal

Time (UTC), the NWS Weather Forecast Office (WFO) in Seattle, WA

(SEW), will make three revisions to boundaries of public weather

forecast and warning zones in western Washington.


1. The portion of the Washington Cascades in the WFO SEW forecast

area, which currently is in two zones, will be regrouped into

three zones. This is a more natural zone grouping with respect to

weather, terrain and considerations of commerce and land use,

resulting in improved forecast and warning services.


WAZ518 - West Slopes Northern Cascades and Passes and WAZ519 -

West Slopes Central Cascades and Passes will be split into three

new zones:  WAZ567 - Cascades of Whatcom and Skagit Counties,

WAZ568 - Cascades of Snohomish and King Counties and WAZ569 -

Cascades of Pierce and Lewis Counties.


2. The more urbanized area of the current WAZ505 - East Puget

Sound Lowlands zone will be split off into its own zone called

WAZ556 - Bellevue and Vicinity; while the East Puget Sound

Lowlands zone, which is generally higher elevation and strongly

affected by its proximity to the Cascades, will retain its name

but be renumbered as WAZ555.


3. The Kitsap County portion of the current WAZ508 -

Seattle/Bremerton Area zone will be split off into its own zone

called WAZ559 - Bremerton and vicinity; while the remaining

portion of WAZ508 will be renamed and renumbered WAZ558 - Seattle

and Vicinity.


Table 1:  New WFO SEW public weather forecast zone names and

numbers effective June 12, 2014


New Zone Number       New Zone Name

---------------       -------------

WAZ567                Cascades of Whatcom and Skagit Counties

WAZ568                Cascades of Snohomish and King Counties

WAZ569                Cascades of Pierce and Lewis Counties

WAZ555                East Puget Sound Lowlands

WAZ556                Bellevue and Vicinity

WAZ558                Seattle and Vicinity

WAZ559                Bremerton and Vicinity


WFO SEW will no longer use public weather forecast zones WAZ505,

WAZ508, WAZ518 and WAZ519.  WFO SEW fire weather zoned and

products are not affected by this change.


A graphical depiction of the new public weather forecast zones as

well as detailed geographic descriptions are online at:


An updated public weather zone shapefile is online at:


Partners and users of WFO SEW public weather products may need to

update their system(s) to continue receiving correct public

weather forecasts/products.


For more information, please contact:


  Ted Buehner

  Warning Coordination Meteorologist

  National Weather Service

  Seattle, WA  98115



National Service Change Notices are online at: