NOAA Wind Graph Question - SailNet Community
 LinkBack Thread Tools
Old 04-10-2007 Thread Starter
Member

Join Date: Feb 2007
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0

NOAA Wind Graph Question

The example NWS NOAA graph below shows wind speed, gusts and direction. My question regards the bars attached to each forecasted hourly wind speed data point. I know the orientation of the bar represents wind direction, but what do the single vs. double hashes at the end of each bar represent?

Also, is the bar length refer to variability? Although my example doesn't show much difference in bar length, I've noticed that it is sometimes different.

Last edited by Bryan53; 04-10-2007 at 06:29 PM.
Bryan53 is offline
Sponsored Links
Advertisement

Old 04-10-2007
Telstar 28

Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 18 Times in 14 Posts
Rep Power: 15

The short bar is 5 knots, the longer bar is 10 knots. See this page for a full explanation.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline
Old 04-10-2007 Thread Starter
Member

Join Date: Feb 2007
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0

Thanks for the explanation and the link!
Bryan53 is offline
Old 04-10-2007
Telstar 28

Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 18 Times in 14 Posts
Rep Power: 15

Glad to help... BTW, those are used by the pilot charts and a lot of other nautical-related documentation, so it is good to be able to read them.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline
Old 04-10-2007
Senior Member

Join Date: Mar 2006
Location: VA
Posts: 2,102
Thanks: 2
Thanked 5 Times in 5 Posts
Rep Power: 11

Where did you find that wind graph? I know about the barbs from my aviation background but have never seen a forecast graph like that. I looked on the NOAA site but couldn't find anything like that chart. Could you post a link?

I assume they are surface winds vs winds aloft?
PalmettoSailor is offline
Old 04-10-2007
Telstar 28

Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 18 Times in 14 Posts
Rep Power: 15

You can find something quite similar over at SailFlow.com - RI- Rhode Island Wind Data

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline
Old 04-11-2007 Thread Starter
Member

Join Date: Feb 2007
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0

Starting here:
National Weather Service Southern Region homepage
Select your region, then the town to get the standard forecast view. Scroll down to the bottom of that page to the “Additional Forecasts and Information” section and select the “Hourly Weather Graph” link. You can then check the boxes for the desired parameters including wind to display the graph for your area.
Bryan53 is offline
Old 04-11-2007
Senior Member

Join Date: Mar 2006
Location: VA
Posts: 2,102
Thanks: 2
Thanked 5 Times in 5 Posts
Rep Power: 11

Gotcha'. Thanks.

There is so much info on that site that I'm constantly amazed. I probably visit NOAA at least as much as anyone here (I often use it for work) and I've never seen that product.
PalmettoSailor is offline

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

## Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Password
 Please enter a password for your user account. Note that passwords are case-sensitive. Password: Confirm Password:
Email Address
 Please enter a valid email address for yourself. Email Address:
OR

## Log-in

 User Name Password Remember Me?
Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

 Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 Thread Tools Show Printable Version Show Printable Version Email this Page Email this Page

 Similar Threads Thread Thread Starter Forum Replies Last Post Mark Matthews Learning to Sail Articles 0 03-06-2005 07:00 PM Kevin Jeffrey Cruising Articles 0 04-21-2003 08:00 PM Steve Colgate Learning to Sail Articles 0 11-10-2002 07:00 PM Steve Colgate Seamanship Articles 0 11-10-2002 07:00 PM Steve Colgate Racing Articles 0 11-10-2002 07:00 PM

 Posting Rules You may post new threads You may 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 OnTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

For the best viewing experience please update your browser to Google Chrome
 Terms of Use