On US Global High Frequency System (GHFS) frequencies. Best frequencies to monitor are those guarded by MacDill and Ascension. After initial contact on one of the published GHFS frequencies, listen closely for them to switch to a non-published frequency to pass traffic. Aircraft call signs are "GULL-nn" or "TEAL-nn" (where nn is a 2-digit number), "NOAA-42", "NOAA-43 and "NOAA-49". The GULL and TEAL aircraft are based at Keesler AFB, Biloxi, MS. The NOAA aircraft are based at MacDill AFB, Tampa, FL.
Whenever a hurricane is within 300 miles of land in the northern western hemisphere, the Hurricane Watch Net is operational on 14325. The Hurricane Watch Net provides communication between the National Hurricane Center and the affected areas.
During a communications emergency, W1AW transmits special bulletins by voice at hh:00, teleprinter at hh:15, and CW at hh:30. Frequencies are:
Voice 01855 03990 07290 14290 18160 21390 28590 Teleprinter 03625 07095 14095 18102.5 21095 28095 CW 01818 03581.5 07047.5 14047.5 18097.5 21067.5 28067.5
The National Institute of Standards and Technology broadcasts storm warnings on 2.5, 5, 10, 15 & 20 MHz AM according to the following schedule:
WV hh:08 Covers Atlantic and eastern North Pacific WWVH hh:48 Covers Western, Eastern, Southern, and North Pacific
Globe Wireless broadcasts weather information, forecasts and bulletins in CW and SITOR modes on the following time-slot schedule:
Stations .. WNU New Orleans, Louisiana VCT Tors Cove, Newfoundland KFS Palo Alto, California
Frequencies .. WNU FEC: 04210.5 06327.0 08425.5 12588.5 12607.5 16384.5 VCT FEC: 04217.5 06329.5 08422.0 12610.5 16827.5 KFS FEC: 04211.5 06315.5 08417.5 12580.5 16829.5 22377.5 WNU CW: 00478.0 04310.0 08570.0 12826.5 17117.6 22575.5 KFS CW: 00476.0 08558.4 12844.5 17026.0 22581.5
FEC Product & Transmission Times .. WNU: GOM/CARIB/ATL CYCLO BULL 0220 0520 0820 1120 1420 1720 2020 2320 GOM/CARIB OFFSHORE FCST 0350 0950 1550 2150 VCT: N ATL HIGH SEAS WX 0450 1050 1650 2250 KFS: E & CTL PAC CYCLO BULL 0220 0520 0820 1120 1420 1720 2020 2320 PAC HIGH SEAS WX 0450 1050 1650 2250
CW Product & Transmission Times ... WNU: GOM/CARIB/N ATL HSEAS WX 0350 0950 1550 2150 KFS: PACIFIC H SEAS WX 0450 1050 1650 2250
Notes:
Links to a wide array of current technical hurricane information and data can be found at Eric Blake's Atlantic Tropical Weather Center page located at http://banzai.neosoft.com/citylink/blake/tropical.html. Products include weather forecasts, hurricane reconnaissance flight data, satellite weather images, and more.