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System Engineering Branch

Public Forecast Zones [z_ddmmyy]

World view of all C-11 Public Forecast Zones

Figure shows NWSI 10-507 Public Forecast Zones continental United States (CONUS) and non CONUS Zones. This image is an overview of the zones and is NOT updated when zones are modified/created. IMAGES of CONUS zones and individual non CONUS Zones are available by clicking on the appropriate box:

CONUS Alaska Guam Hawaii Puerto Rico/U.S. Virgin Islands
Notice: GIF images are not updated with shapefile update

Changes to Public Forecast Zones are announced by the National Weather Service in Service Change Notifications issed by the Office of Climate, Water, and Weather Services.
:
Description Valid date Available Version(s) Size (bytes) # Records MD5SUM Documentation
Public Forecast Zones... 13 October 2011 Download Compressed Shapefile z_13oc11.zip 36,600,495 3639 4610696a2a56de1dd2c25ba665b5ac79 Change History Metadata
15 December 2011 Download Compressed Shapefile z_15de11.zip 36,600,495 3639 892b438afd6a8d1b0a95b1fcf8b957ca
23 February 2012 Download Compressed Shapefile z_23fe12.zip 41,532,251 3654 2c092a4efb7c4363e791b5e6e286b280
3 April 2012 Download Compressed Shapefile z_03ap12.zip 40,699,661 3639 d69644bdb2181b16a7c6a4f9d2abd9ab


File Specifications:

Naming Convention: z_ ddmmyy .shp/.shx/.dbf - where .shp, .shx, .dbf are the extensions of the 3 component files of the shapefile and .prj is the projection file.
Shapefile Type: polygon
Source: NWS Office of Climate, Water and Weather Services (OCWWS): NWSI 10-507.
Latest Version Last Modified: 27 March 2009
Related Web Page: County-Zone Correlation File

Attributes:

field name type width,dec description
STATE character 2 [ss] State abbrev (US Postal Standard)
ZONE character 3 [zzz] Zone number, from WSOM C-11
CWA character 3 County Warning Area, from WSOM C-47
NAME character 254 Zone name, from WSOM C-11
STATE_ZONE character 5 [sszzz] state+("00"+zone.trim).right(3))
TIME_ZONE character 2 [tt] Time Zone, 2 chars if split
FE_AREA character 2 [aa] Cardinal area of state (occasional)
LON numeric 10,5 Longitude of centroid [decimal degrees]
LAT numeric 9,5 Latitude of centroid [decimal degrees]
SHORTNAME character 32 Shortened zone name

Comments:

Due to the increased lead time for implementation of new zone files, the older version as well as the new version of the shapefile will be available from this page.


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