Current Radar or Satellite Image

Flhurricane.com - Central Florida Hurricane CenterHurricanes Without the Hype! Since 1995


The Atlantic is mostly quiet
Days since last H. Landfall - US: Any 10 (Michael) , Major: 10 (Michael) Florida - Any: 10 (Michael) Major: 10 (Michael)
None
COMMUNICATION
STORM DATA
CONTENT
FOLLOW US
ADS
Login to remove ads

 


General Discussion >> Hurricane Ask/Tell

Jump to first unread post. Pages: 1
Big Kahuna
Weather Hobbyist


Reged: Sun
Posts: 52
Loc: DeLand, Florida
Measuring a Huricanes size.
      #47521 - Thu Aug 11 2005 12:10 PM

How is it you measure the size of a hurricane. For instance if I'm looking at a visable loop and click on the" Latt. on " button what is the distance between 20N and 30N?

Post Extras: Print Post   Remind Me!   Notify Moderator  
ClarkModerator
Meteorologist


Reged: Wed
Posts: 1710
Loc:
Re: Measuring a Huricanes size. [Re: Big Kahuna]
      #47527 - Thu Aug 11 2005 01:27 PM

The distance between points of longitude varies with how close to the poles you are. Between latitudes, it is generally about 111km/69mi. Between longitudes, you have to multiply it by the cosine of the latitude (in degrees).

--------------------
Current Tropical Model Output Plots
(or view them on the main page for any active Atlantic storms!)


Post Extras: Print Post   Remind Me!   Notify Moderator  
danielwAdministrator
Moderator


Reged: Wed
Posts: 3518
Loc: Hattiesburg,MS (31.3N 89.3W)
Re: Measuring a Hurricanes size. [Re: Clark]
      #47531 - Thu Aug 11 2005 01:40 PM

Here is a link that has the mathematical formula built in.
http://www.nhc.noaa.gov/gccalc.shtml?

At 60.0 W, the distance between 20.0 N and 30.0 N is 600nm. Using this calculator.


Post Extras: Print Post   Remind Me!   Notify Moderator  
ClarkModerator
Meteorologist


Reged: Wed
Posts: 1710
Loc:
Re: Measuring a Hurricanes size. [Re: danielw]
      #47540 - Thu Aug 11 2005 02:48 PM

Yep -- it's 60nm between 1 deg. of latitude, while it is 69 statute miles. The great circle calculator is really useful...does a good job of doing those calculations pretty simply.

--------------------
Current Tropical Model Output Plots
(or view them on the main page for any active Atlantic storms!)


Post Extras: Print Post   Remind Me!   Notify Moderator  
Big Kahuna
Weather Hobbyist


Reged: Sun
Posts: 52
Loc: DeLand, Florida
Re: Measuring a Hurricanes size. [Re: Clark]
      #47695 - Fri Aug 12 2005 12:12 PM

Thanks for the help. I tried to research it before asking and on some sites they (like the NHC) would just say that the typical hurricane was 300 miles wide but gave no explination on how they can to that conclusion. When I would look at a Sat. Loop without a point of reference (land mass, recon flight) I couldnt tell. I know that sometimes size (of the cyclone ) does'nt matter as explained in the link attached.
http://hurricanes.noaa.gov/prepare/structure.htm


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1



Extra information
0 registered and 3 anonymous users are browsing this forum.

Moderator:  CFHC, Ed Dunham, Colleen A., danielw, Clark, RedingtonBeachGuy, Bloodstar, tpratch, typhoon_tip, cieldumort 

Print Topic

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Topic views: 6367

Rate this topic

Jump to

Note: This is NOT an official page. It is run by weather hobbyists and should not be used as a replacement for official sources. 
CFHC's main servers are currently located at
Hostdime.com in Orlando, FL.
Image Server Network thanks to Mike Potts and Amazon Web Services. If you have static file hosting space that allows dns aliasing contact us to help out! Some Maps Provided by:
Great thanks to all who donated and everyone who uses the site as well. Site designed for 800x600+ resolution
When in doubt, take the word of the National Hurricane Center