
Scattered thunderstorms with severe gusts, hail and a tornado risk are possible near a cold front from the Ohio Valley to the Mid-Atlantic tonight. Tropical Storm Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the panhandle of Florida into Louisiana through Wednesday. Read More >
NWS Telecommunications Gateway
National Program
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 |
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
NWS Telecommunications Gateway
5830 University Research Ct.
College Park, MD 20740
(301)-683-1518
Comments? Questions? Please Contact Us.

