Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 31-01-2018, 14:35   #1
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 4,527
Very useful new weather forecast resource

This looks extremely useful.
NAEFS Probabilistic Wind Speed Guidance

Probability of windspeeds rather than just a grib with no indication of level of confidence in the output.

__________________

conachair is offline   Reply With Quote
Old 31-01-2018, 14:59   #2
Registered User
 
Franziska's Avatar

Join Date: Mar 2011
Location: Panschwitz, Germany
Boat: Woods Mira 35 Catamaran
Posts: 1,285
Re: Very useful new weather forecast resource

Looks very interesting indeed!
__________________

Franziska is offline   Reply With Quote
Old 31-01-2018, 15:12   #3
Registered User

Join Date: Mar 2014
Location: Caribbean
Boat: Lagoon 450
Posts: 893
Re: Very useful new weather forecast resource

Book marked this - thanks!
Bean Counter is offline   Reply With Quote
Old 31-01-2018, 15:29   #4
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 2,049
Re: Very useful new weather forecast resource

Color coded areas of compressed isobars. When I was in the Coast Guard, we used to use a red crayon on a simple grib file printout to get the same picture. Looks like someone is trying to capitalize on an old technique.
S/V Illusion is offline   Reply With Quote
Old 31-01-2018, 15:42   #5
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 4,527
Re: Very useful new weather forecast resource

Quote:
Originally Posted by S/V Illusion View Post
Color coded areas of compressed isobars. When I was in the Coast Guard, we used to use a red crayon on a simple grib file printout to get the same picture. Looks like someone is trying to capitalize on an old technique.
Probabilistic analyse of model ensemble output is a very long way from some crayon on a fax .
conachair is offline   Reply With Quote
Old 31-01-2018, 16:02   #6
Senior Cruiser
 
atoll's Avatar

Cruisers Forum Supporter

Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 9,889
Images: 75
Re: Very useful new weather forecast resource

Quote:
Originally Posted by conachair View Post
This looks extremely useful.
NAEFS Probabilistic Wind Speed Guidance

Probability of windspeeds rather than just a grib with no indication of level of confidence in the output.

16 day prediction looks very useful for passage planning in ocean areas,TY
__________________
my catamaran building project updates https://www.cruisersforum.com/forums...ft-103739.html
atoll is offline   Reply With Quote
Old 31-01-2018, 16:10   #7
Registered User

Join Date: Feb 2010
Posts: 897
Re: Very useful new weather forecast resource

It doesn't appear that the Pacific Ocean extends into the southern hemisphere.
tuskie is offline   Reply With Quote
Old 31-01-2018, 16:39   #8
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 2,049
Re: Very useful new weather forecast resource

Quote:
Originally Posted by conachair View Post
Probabilistic analyse of model ensemble output is a very long way from some crayon on a fax .
Quite correct. The latter requires some thought and insight with a bit of experience. Such was the state of the art in those days (twentieth century).
S/V Illusion is offline   Reply With Quote
Old 31-01-2018, 16:46   #9
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 4,527
Re: Very useful new weather forecast resource

Quote:
Originally Posted by S/V Illusion View Post
Quite correct. The latter requires some thought and insight with a bit of experience. Such was the state of the art in those days (twentieth century).
Computing power and forecasting models have come on massively even in the past decade.
conachair is offline   Reply With Quote
Old 01-02-2018, 09:55   #10
Registered User

Join Date: Sep 2013
Location: Alert Bay, Vancouver Island
Boat: 35ft classic ketch/yawl.
Posts: 1,521
Images: 4
Send a message via Skype™ to roland stockham
Re: Very useful new weather forecast resource

Quote:
Originally Posted by conachair View Post
This looks extremely useful.
NAEFS Probabilistic Wind Speed Guidance

Probability of windspeeds rather than just a grib with no indication of level of confidence in the output.
Still 'just a grib' but with computer generated highlights. A very useful touch but still no input from a forecaster. The level of experience behind the guy with the crayon begins to make it a forecast. I would go with this as an improvement to a grib but still use the USCG Wx service as the main source of weather info. My rule is that if it doesn't show fronts it's not a forecast. Since the navy give us their professionally produced forecasts every 6hr for free why wouldn't you use them?
roland stockham is offline   Reply With Quote
Old 01-02-2018, 10:39   #11
Registered User

Join Date: Feb 2015
Location: Oakland CA, boat on the hard in Panama
Boat: Morgan 46 ketch
Posts: 766
Re: Very useful new weather forecast resource

Quote:
Originally Posted by tuskie View Post
It doesn't appear that the Pacific Ocean extends into the southern hemisphere.
Yeah that's the issue with many of the products produced in the US, of course we its understandable that they want to concentrate their resources on weather in or coastal to the US. I do like the unique presentations of that website but it is not useful south of La Paz Mex or Hawaii in the Pacific, which leaves out most of us.
waterman46 is offline   Reply With Quote
Old 01-02-2018, 11:00   #12
Registered User

Join Date: Sep 2013
Location: Alert Bay, Vancouver Island
Boat: 35ft classic ketch/yawl.
Posts: 1,521
Images: 4
Send a message via Skype™ to roland stockham
Re: Very useful new weather forecast resource

If you are going via Internet try this new service from the National Hurricane Center. Gives forecast grid boxes right down to Panama with detailed maps showing position of the ITC and fronts
https://www.nhc.noaa.gov/?epac
(hope the link works!)
roland stockham is offline   Reply With Quote
Old 01-02-2018, 11:07   #13
Registered User

Join Date: Aug 2014
Location: New Joisey
Posts: 54
Re: Very useful new weather forecast resource

Quote:
Originally Posted by roland stockham View Post
Still 'just a grib' but with computer generated highlights. A very useful touch but still no input from a forecaster. The level of experience behind the guy with the crayon begins to make it a forecast. I would go with this as an improvement to a grib but still use the USCG Wx service as the main source of weather info. My rule is that if it doesn't show fronts it's not a forecast. Since the navy give us their professionally produced forecasts every 6hr for free why wouldn't you use them?
Could you share the URL for the USCG Wx site you're referring to?
Thanks
kapnkarl is offline   Reply With Quote
Old 01-02-2018, 11:47   #14
Registered User
 
RichandHelen's Avatar

Join Date: Sep 2013
Location: Miami
Boat: 2012 Tartan 47
Posts: 214
Re: Very useful new weather forecast resource

NOAA forecast 15-20 knots in this area last week. Thought fondly about them all night long in my protected anchorage with a steady 30-35 knots.
RichandHelen is offline   Reply With Quote
Old 01-02-2018, 11:48   #15
Registered User

Join Date: Sep 2013
Location: Alert Bay, Vancouver Island
Boat: 35ft classic ketch/yawl.
Posts: 1,521
Images: 4
Send a message via Skype™ to roland stockham
Re: Very useful new weather forecast resource

Quote:
Originally Posted by kapnkarl View Post
Could you share the URL for the USCG Wx site you're referring to?
Thanks
Radiofax Charts - Pt. Reyes, CA

The link I posted above is the new service which may replace this one if you are using the internet rather than radiofax. At the moment they are still doing both. New service is more local and detailed Wx charts are wider area so less detailed but give the overall picture from top of Baja to equator.
__________________

roland stockham is offline   Reply With Quote
Reply

Tags
forecast, weather

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
One Very, Very, Very Lucky Sailor nigel1 Off Topic Forum 13 09-11-2011 07:04
Weather Forecast Gulf of Mexico Ted Navigation 4 23-10-2010 08:02
marine weather forecast? muttnut General Sailing Forum 4 18-04-2009 19:23
Best internet weather forecast for crossing? Aquah0lic General Sailing Forum 2 18-03-2009 04:46
I found this article about cats very useful. David M Multihull Sailboats 10 05-11-2007 13:12



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 13:01.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.