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Appendix 
Weather Broadcast Frequencies
Voice Broadcasts
(All frequencies are upper sideband-USB)
NMN-United States Coast Guard, Portsmouth, Virginia
| Coverage Area | Time UTC | Frequency KHz |
| Offshore Forecast-West Central and SW No. Atlantic west of 65º W, Gulf of Mexico and Caribbean | 0330 | 4426, 6501, 8764 |
| Offshore Forecast-same as above plus the offshore waters east of New England | 0930 | 4426, 6501, 8764 |
| Offshore Forecast-same as above plus the offshore waters east of New England | 1600, 2200 | 6501, 8764, 13089 |
| High Seas Forecast-North Atlantic west of 35º west, Gulf of Mexico and Caribbean Sea | 0500 | 4426, 6501, 8764 |
| High Seas Forecast-North Atlantic west of 35º west, Gulf of Mexico and Caribbean Sea | 1130, 2330 | 6501,
8764, 13089 |
| High Seas Forecast-North Atlantic west of 35º west, Gulf of Mexico and Caribbean Sea | 1730 | 8764, 13089, 17314 |
| Gulf Stream Location | 1600, 2200 | 6501, 8764, 13089 |
WLO-Mobile, Alabama
|
Coverage Area |
Time EST |
Frequency KHz |
| Gulf of Mexico, The Caribbean Sea, and the SW N. Atlantic | 0100, 0700, 1300, 1900 | 4396, 8806, 13152, 17362, 22804 |
CW Broadcasts
WCC-Chatham, Mass.
|
Coverage Area |
Time UTC |
Frequency KHz |
|
High Seas- Atlantic Ocean, Caribbean Sea, and the Gulf of Mexico |
1250, 1650 | 4331, 6376, 8586, 8630, 13033, 16972 |
WLO-Mobile, Ala.
|
Coverage Area |
Time UTC |
Frequency KHz |
|
Gulf of Mexico |
0400, 1000, 1600, 2200 |
4343, 6416, 8514, 12886.5, |
|
Caribbean/SW N. Atlantic |
0500, 1100, 1700, 2300 |
4343, 6416, 8514, 12886.5, |
WNU-Slidell, La.
|
Coverage Area |
Time UTC |
Frequency KHz |
High Seas- Atlantic Ocean, Caribbean Sea, and the Gulf of Mexico |
0350, 0950, 1550, 2150 | 4310, 8570, 12826.5, 17117.6, 22575.5 |
NMF-Boston, Mass.
|
Coverage Area |
Time UTC |
Frequency KHz |
|
High Seas- Atlantic Ocean, Caribbean Sea, and the Gulf of Mexico |
0140 1630 |
6314, 8416.5, 12579, 16806.5 |
WCC-Chatham, Mass.
|
Coverage Area |
Time UTC |
Frequency KHz |
|
High Seas- Atlantic Ocean, Caribbean Sea, and the Gulf of Mexico, New England, SW N. Altantic, and Caribbean Sea |
0440, 1240, 1640 |
4216.5, 6324, 8424, 8426.5, 12589.5, 12598, 16817, 16825, 22386.5 |
WLO-Mobile, Ala.
|
Coverage Area |
Time UTC |
Frequency |
Frequency |
|
Gulf of Mexico |
0435, 1035, 1635, 2235 |
4343, 6416, 8514, 12886.5, 17022.5, 22487, 26135 |
4462.5, 6344, 8534, 12992, 16997.6, 22688, 26144 |
| Caribbean and the SW N. Atlantic | 0535, 1135, 1735, 2335 | 4343, 6416, 8514, 12886.5, 17022.5, 22487, 26135 | 4462.5, 6344, 8534, 12992, 16997.6, 22688, 26144 |
WNU-Slidell, La.
|
Coverage Area |
Time UTC |
Frequency KHz |
Offshore Forecast-SW No. Atlantic, Gulf of Mexico and Caribbean Sea |
0350, 0950, 1550, 2150 | 4210.5, 6327, 8425.5, 12588.5, 16834.5 |
All NAVTEX stations broadcast on 518 KHz.
Time
The National Bureau of Standards broadcasts time signals continuously 24 hours a day
and storm alerts at 8-10 minutes after the hour.
| Station | Frequency |
| WWV-Ft. Collins, Colorado | 2.5, 5, 10, 15, 20, 25 MHz |
| WWVH-Kekaha-Kawai, Hawaii | 2.5, 5, 10, 15, 20 MHz |
© Stephen J. Pavlidis 2010