[GreenKeys] CFH info

wa2hwj at att.net wa2hwj at att.net
Tue Sep 25 11:31:48 EDT 2007


I just found this info:
 
Halifax
The Canadian Forces Fleet Meteorological and Oceanographic Centre (MetOc) Broadcast Atlantic broadcasts text and chart information. The broadcast is maintained to serve and fulfil the requirements of the Canadian Navy. Consequently the broadcast is subject to short notice change without notification. The area in which the broadcast is intended to be received is North Atlantic waters north of 35°N and west of 35°W. The broadcast shares its time between radio-facsimile and radioteletype. The facsimile portion consists of either one or two charts being broadcast at the beginning of each hour. The remaining time is dedicated to radioteletype.
 122·51  H24
4271
6496·4
10536
13510
NOTE:     Facsimile transmission starts with a 30 second break followed by a 30 second phasing signal
(1)     Withdrawn for maintenance 1200-1600 on the second Thursday each month
DIAGRAMS: pages 44 and 57

 
 
 
The Canadian Forces Fleet Meteorological and Oceanographic (METOC)
Broadcast Atlantic - Radioteletype
Key
Text based information is broadcast during those times when meteorological charts are not being transmitted. Selected bulletins are placed into a transmission queue. Once they have been received in the queue, they are assigned a priority. Once a bulletin is broadcast it is removed from the queue. The priority for a particular bulletin is reduced after each hour it remains in the queue. Each bulletin is also coded as to the length of time in hours it remains in the queue. If a particular bulletin is not broadcast during its allotted time, it is removed from the queue.
In order to copy a certain item, such as a Marine Forecast (FP), it is important to know the bulletin’s issue time, as that will likely be the first hour during which it will be broadcast.
Weather Warnings (WW) have the highest priority and are put into the queue as they are received. They are broadcast as soon as possible after the chart mode is completed.
Marine Forecasts (FP) are issued four times per day. There are two Environment Canada Weather Centres that issue the marine forecasts for the waters off the East Coast of Canada. The Maritimes Weather Centre issues the synopsis for Maritime waters under the header FPCN20 CWHX and the forecast under FPCN22 CWHX. The Newfoundland Weather Centre issues the synopsis for Newfoundland waters under FPCN22 CYQX and the forecast under FPCN20 CYQX. The area of coverage is the Canadian economic zone. These forecasts are scheduled to be broadcast after each issue.
High Seas Forecasts are issued four times per day and are put into the queue as they are received. The header for this bulletin is FZNT01 KWBC. The area of coverage is the Atlantic Ocean from 7°N to 67°N west of 35°W.
Ship Reports (SM) are observations at each synoptic hour, 00, 06, 12 and 18 UTC. These reports are put into the queue when available.
Buoy Reports are from selected locations in the waters adjacent to Atlantic Canada.
Terminal Forecasts (FC) are issued four times per day within a half an hour of the synoptic hour, 00, 06, 12 and 18 UTC. Every hour, surface observations and forecasts for selected aerodromes are broadcast.
Ice Information (FI — Ice Hazard bulletins and FE — Thirty day Ice forecast) for the Gulf of St. Lawrence, the East Coast of Canada and the Eastern Arctic is broadcast according to season and availability. When available, Ice Hazard bulletins are broadcast after 15 UTC and Thirty day Ice forecasts are broadcast after 18 UTC.
Continued on next page
PIREPS (UA) are reports from aircraft pilots and are put into the queue as received.
Upper Air Reports (UM, UG) are reports from radiosonde balloons. These are scheduled to be broadcast after 00 and 12 UTC.
Tropical Cyclone Discussions (WO) are bulletins that describe tropical weather that is expected to affect Canadian waters. These discussions are put into the queue when available.
 


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