National Weather Service United States Department of Commerce

Active Weather for the West, Warming in the East

The potential for heavy snow at higher elevations in the western U.S. will continue for many spots through the weekend. In the meantime, the eastern half of the continental U.S. will transition to above normal temperatures ahead of a pair of cold fronts next week that will bring readings back to closer to normal as we approach Thanksgiving Day. Read More >

Telecommunication Operations Center

National Program

Table C2

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Table C2

Geographical Designator A1 A2

For bulletins containing ship weather reports and oceanographic data
including reports from automatic marine stations

Instructions for the proper application of the data type designator

1. The first letter A1 will denote the nature of the ship or automatic marine station:

      For ocean weather stations:                         W
      For mobile ships and other marine stations:   V

2. The second letter A2 will denote the area from which the reports contained in the bulletin originate:

Designator Data Area
A Area between 30° N - 60° S, 035° W - 070° E
B Area between 90° N - 05° N, 070° E - 180° E
C Area between 05° N - 60° S, 120° W - 035° W
D Area between 90° N - 05° N, 180° W - 035° W
E Area between 05° N - 60° S, 070° E - 120° W
F Area between 90° N - 30° N, 035° W - 070° E
J Area between 60° S
X More than one area