National Weather Service United States Department of Commerce

Extremely Critical Fire Weather in Southern California; Winter Storm To Impact the Southern U.S.

High winds and low relative humidity will continue critical to extremely critical fire weather in southern California through Thursday. A winter storm is expected to bring major impacts from areas of heavy snow, sleet, and freezing rain to portions of the southern Plains beginning on Thursday before intensifying as it shifts across the Mid-South Friday through Saturday morning. 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