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| Author: | Loren [ Wed Jan 10, 2007 2:58 pm ] |
| Post subject: | WINDROSE |
I found a website that gives wind information for many locations in every state in the US. You may be surprised about the average direction and strength in each of the 12 months in your area. See : ftp://ftp.wcc.nrcs.usda.gov/downloads/climate/windrose/ |
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| Author: | Dan DeLave [ Thu Jan 11, 2007 3:55 pm ] |
| Post subject: | |
I went there to look at Long Beach CA. I was surprised that the wind was not in the "Normal Direction". We always get SW winds here usually 210 to 230. As I looked closer is said the plot was taken from 1961. Are you kidding? I did not know what a sailboat was then. Dan |
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| Author: | Loren [ Thu Jan 11, 2007 8:08 pm ] |
| Post subject: | |
Hi Dan, I wondered about that myself. I found that the 1961 date is the BEGINNING of the database. Welcome To The Natural Resources Conservation Service - USDA NATIONAL WATER and CLIMATE CENTER -------------------------------------------------------- The Local Date and Time is Wed Jan 10 13:50:01 2007 Current Directory is / Information Contact is: [email protected] ----------------------------------------------------------- Note that data files herein are at most updated once an hour. |
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| Author: | Hammond [ Thu Jan 11, 2007 10:03 pm ] |
| Post subject: | |
The plots look like 23 hr graphs so the average windspeed and direction may be misleading. By the way, what is the conversion from M/S to Kts/Hr? |
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| Author: | Hammond [ Thu Jan 11, 2007 10:11 pm ] |
| Post subject: | |
Windspeed m/s *1.9438445= Windspeed Kts I looked it up in case anyone is curious. |
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| Author: | Hammond [ Thu Jan 11, 2007 10:13 pm ] |
| Post subject: | |
http://www.srh.noaa.gov/elp/wxcalc/form ... rsion.html for more cool conversions. |
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| Author: | mmiller [ Fri Jan 12, 2007 9:56 am ] |
| Post subject: | Conversion |
I use this handy (free) program for all kinds of conversions. It can do speed conversions from Meters per Second to Knots and all kinds of other cool stuff. http://joshmadison.net/software/convert/ |
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| Author: | MBounds [ Fri Jan 12, 2007 10:56 am ] |
| Post subject: | |
Google also does conversions. Just type "convert x to y" in the search box. For example: "convert 1 meter/sec to knots" yields: 1 (meter / second) = 1.94384449 knots |
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| Author: | Banzilla [ Fri Jan 12, 2007 1:35 pm ] |
| Post subject: | |
Loren wrote: Hi Dan,
I wondered about that myself. I found that the 1961 date is the BEGINNING of the database. Welcome To The Natural Resources Conservation Service - USDA NATIONAL WATER and CLIMATE CENTER -------------------------------------------------------- The Local Date and Time is Wed Jan 10 13:50:01 2007 Current Directory is / Information Contact is: [email protected] ----------------------------------------------------------- Note that data files herein are at most updated once an hour. The date stamp on the files themselvs is still 2003 so they still seem to be several years old. Sam |
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| Author: | Loren [ Sun Jan 28, 2007 11:45 pm ] |
| Post subject: | |
Here is a page that describes in detail how to read the windrose for your area : http://www.wcc.nrcs.usda.gov/climate/windrose.html The data is from 1961 through at least 1990. Please note that the length of the arms relates to frequency, not velocity. COLOR determines velocity. Loren |
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| Author: | Loren [ Mon Jan 29, 2007 3:09 pm ] |
| Post subject: | |
I received this today from : Jan Curtis, Applied Climatologist Natural Resources Conservation Service National Water & Climate Center Portland, OR Climate Atlas of the United States http://www.wrcc.dri.edu/climmaps/ I hope some of you can find find this useful, Loren |
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| Author: | Loren [ Sun Mar 04, 2007 3:46 pm ] |
| Post subject: | |
Here is a national map of real time wind direction and velocity over the last 6 hours : Current United States Wind Maphttp://www.ambientweather.com/cuunstwimap.html Loren |
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| Author: | Loren [ Sun Mar 04, 2007 3:51 pm ] |
| Post subject: | |
Sorry for the bad link in the previous message. Maybe Matt will delete it to avoid confusion. Here is a national map of real time wind direction and velocity over the last 6 hours : Current United States Wind http://www.ambientweather.com/cuunstwimap.html Loren |
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