Current Radar or Satellite Image

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


Nothing currently in the Atlantic Basin, for Late October the West Caribbean is usually where to monitor.
Days since last H. Landfall - US: Any 10 (Nate) , Major: 28 (Maria) Florida - Any: 38 (Irma) Major: 38 (Irma)
None
COMMUNICATION
STORM DATA
CONTENT
FOLLOW US
ADS
Login to remove ads

 


General Discussion >> Hurricane Ask/Tell

ClarkModerator
Meteorologist


Reged: Wed
Posts: 1710
Re: convective diurnal maximum
      Thu Jul 14 2005 06:32 PM

I think I can take a better stab at it, but apologies ahead of time if it seems jumbled.

At night, the atmospheric profile -- including the near-surface profile -- is relatively moist due to the lack of daytime heating. At night, generally temperatures fall to the dewpoint; this is no different in the tropics. Tropical convection inherently does not depend upon CAPE (convective available potential energy), which is at a maximum during the day due to daytime heating; this is why you see a convective maximum late in the afternoon over land. With a moister profile through the atmosphere and given sufficient forcing for rising motion -- in the tropics, generally from converging winds at low levels in association with a tropical wave or the ITCZ...or even a tropical cyclone -- convection is more likely to be at its maximum just before the sun comes up. It also helps, particularly for tropical cyclones, that at or just after nightfall, SSTs are at a relative maximum for the day. At that time, convection/tropical systems can tap into the increased surface heat and moisture energy, something that continues through the night in conjunction with the aforementioned moisture profile, allowing for increased development.

--------------------
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


Entire topic
Subject Posted by Posted on
* convective diurnal maximum Lysis Thu Jul 14 2005 06:32 PM
. * * Re: convective diurnal maximum ClarkModerator   Thu Jul 14 2005 06:32 PM
. * * Re: convective diurnal maximum Lysis   Thu Jul 14 2005 06:40 PM
. * * Re: convective diurnal maximum ClarkModerator   Thu Jul 14 2005 07:42 PM
. * * Re: convective diurnal maximum Keith234   Thu Jul 14 2005 07:58 PM
. * * Re: convective diurnal maximum ClarkModerator   Thu Jul 14 2005 10:56 PM
. * * Re: convective diurnal maximum Keith234   Fri Jul 15 2005 09:38 AM
. * * Re: convective diurnal maximum ClarkModerator   Fri Jul 15 2005 10:41 AM
. * * Re: convective diurnal maximum Lysis   Thu Jul 14 2005 09:27 PM
. * * Re: convective diurnal maximum Keith234   Thu Jul 14 2005 09:37 PM
. * * Re: convective diurnal maximum Terra   Thu Jul 14 2005 09:47 PM
. * * Re: convective diurnal maximum Keith234   Thu Jul 14 2005 09:55 PM
. * * Re: convective diurnal maximum Terra   Thu Jul 14 2005 07:30 PM
. * * Re: convective diurnal maximum Terra   Thu Jul 14 2005 05:58 PM
. * * Re: convective diurnal maximum Keith234   Thu Jul 14 2005 04:34 PM
. * * Re: convective diurnal maximum Lysis   Thu Jul 14 2005 05:34 PM

Extra information
0 registered and 10 anonymous users are browsing this forum.

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



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

Rating:
Thread views: 13201

Rate this thread

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