National Weather Service United States Department of Commerce

 

Overview of Coastal, Offshore and High Seas Marine Zones

 

Detailed view of the Marine Zones and access to forecasts.
Detailed view of the Offshore Zones and access to forecasts.

Shapefile Type: Polygon

Data source: Coastline derived from US Counties

Naming convention: mzddmmyy (coastal marine zones), ozddmmyy (offshore zones), hzddmmyy (high seas zones)  where ddmmyy = day-month-year

NWS Specifications: NWSI 10-302

Description: The NWS issues marine forecasts, watches, warnings and advisories for a set of defined zone for offshore and coastal waters of the U.S.

 

Description Valid date Data Download # Records MD5SUM Documentation
Coastal Marine Zones
Including the Great Lakes
30 March 2021 mz30mr21.zip 504 1BF83C667562A8B2989C37A7A2D9E17D
Date last upload: 03-MAR-21
Change History Metadata
5 April 2022
(ppd from 22 March 2022)
mz22mr22.zip 507 a63fc5953f751386c305fa7c9c7a98b8
Date last upload: 28-FEB-22
Offshore Marine Zones 16 April 2019 oz16ap19.zip 97 4F0B0F3C241EAB5DE77ADCF57A0D9152
Date last upload: 19-APR-19
Change History Metadata
5 April 2022
(ppd from 22 March 2022)
oz22mr22.zip 125 45181ea8dedcd03caa905de5ab7b6f65
Date last upload: 16-MAR-22
High Seas Marine Zones 30 June 2017 hz30jn17.zip 6 B4702A2B77B16D2EF28C782A464B2DEE Change History Metadata

 

Shapefile Attributes:

Field Name Type width,dec Description
ID character 6 Marine Zone Identifier
WFO character 3 Assigned WFO (Office Identifier)
GL_WFO character 3 Great lakes WFO responsible for Open Lake Forecastts
NAME character 250 Name of Marine Zone (In the offshore zone file, this attribute is "Name")   
AJOIN0 character 5 Not Used
AJOIN1 character 5 Not Used
LON numeric 10,5 Longitude of Centroid [decimal degrees]
LAT numeric 9,5 Latitude of Centroid [decimal degrees]