
A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. 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.

