Current Radar or Satellite Image

Flhurricane.com - Central Florida Hurricane Center - Tracking Storms since 1995Hurricanes Without the Hype! Since 1995


Sara's remnants are now in the Gulf, but are not expected to reorganize much. Elsewhere, no tropical development is anticipated.
Days since last H. Landfall - US: Any 42 (Milton) , Major: 42 (Milton) Florida - Any: 42 (Milton) Major: 42 (Milton)
None
COMMUNICATION
STORM DATA
CONTENT
FOLLOW US
 

You are not logged in. [Login] Other Forums · Search · Active Topics
New user · Who's Online · FAQ · Rules · Calendar

General Discussion >> Hurricane Ask/Tell
Previous topic Previous   View all topics Index   Next topic Next   Threaded Mode Threaded  

Pages: 1
srquirrely
Weather Watcher


Reged:
Posts: 33
Loc: SARASOTA
WHAZZAT?
      #80152 - Sun Jun 22 2008 01:24 PM

When you look at the visible satellite and see a semi-circular line of lower clouds spreading out from thunderstorms, what is that??? It seems like it would be clouds propelled by a downburst situation, but not low clouds, probably mid-level judging from the apparent temperature. Would it look like a roll cloud from the ground? There are a few of them out there right now... they move pretty rapidly out from the center of convection and sometimes persist quite far away from it so then it wouldn't look like part of the storm. And they don't appear to be affected by prevailing low or mid-level winds...
Just curious,
TIA
ADDS satellite TPA :
[url=http://adds.aviationweather.gov/satellite/displaySat.php?region=TPA&isingle=single&itype=vis]

Post Extras: Print Post   Remind Me!   Notify Moderator  
Ed DunhamAdministrator
Former Meteorologist & CFHC Forum Moderator (Ed Passed Away on May 14, 2017)


Reged:
Posts: 2565
Loc: Melbourne, FL
Re: WHAZZAT? [Re: srquirrely]
      #80155 - Sun Jun 22 2008 01:57 PM

Its called a Gust Front - usually visible on radar. When a large thunderstorm cell or complex reaches its peak and begins to dissipate, all of that upflowing air that built up the storm begins to descend at an ever increasing rate as the storm weakens. When it hits the ground it fans out in a gust front. When the gust front passes over your location the temperature will often drop sharply and the winds can get quite gusty - sometimes gusting to 40mph. The temperature differential forms the low clouds - and sometimes the counterclockwise rotation can create a roll cloud. Because of the increased force from the downdraft of descending air, the gust front moves out ahead of the dying thunderstorms at a faster rate than the movement of the thunderstorm itself.
Cheers,
ED

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


Previous topic Previous   View all topics Index   Next topic Next   Threaded Mode Threaded  

Extra information
0 registered and 17 anonymous users are browsing this forum.

Moderator:  

Print Topic

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

Rating: *
Topic views: 4843

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