F

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

First day of the Atlantic Hurricane season, no tropical activity on the horizon in the near term. Mid August is usually when things pick up.

Days since last H. Landfall - US: Any 277 (Idalia) , Major: 277 (Idalia) Florida - Any: 277 (Idalia) Major: 277 (Idalia)

NEWS

CURRENT STORMS

None

HypeScale: 0.1

COMMUNICATION

STORM DATA

CONTENT

FOLLOW US

National Hurricane Center

You are not logged in. [Login]

Other Forums · Search · Active Topics
New user · Who's Online · FAQ · Rules · Calendar

General Discussion >> Hurricane Ask/Tell

Clark
Meteorologist

Reged:
Posts: 1710

Re: convective diurnal maximum
Thu Jul 14 2005 10:32 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 10:32 PM
Re: convective diurnal maximum	Clark	Thu Jul 14 2005 10:32 PM
Re: convective diurnal maximum	Lysis	Thu Jul 14 2005 10:40 PM
Re: convective diurnal maximum	Clark	Thu Jul 14 2005 11:42 PM
Re: convective diurnal maximum	Keith234	Thu Jul 14 2005 11:58 PM
Re: convective diurnal maximum	Clark	Fri Jul 15 2005 02:56 AM
Re: convective diurnal maximum	Keith234	Fri Jul 15 2005 01:38 PM
Re: convective diurnal maximum	Clark	Fri Jul 15 2005 02:41 PM
Re: convective diurnal maximum	Lysis	Fri Jul 15 2005 01:27 AM
Re: convective diurnal maximum	Keith234	Fri Jul 15 2005 01:37 AM
Re: convective diurnal maximum	Terra	Fri Jul 15 2005 01:47 AM
Re: convective diurnal maximum	Keith234	Fri Jul 15 2005 01:55 AM
Re: convective diurnal maximum	Terra	Thu Jul 14 2005 11:30 PM
Re: convective diurnal maximum	Terra	Thu Jul 14 2005 09:58 PM
Re: convective diurnal maximum	Keith234	Thu Jul 14 2005 08:34 PM
Re: convective diurnal maximum	Lysis	Thu Jul 14 2005 09:34 PM

Extra information

0 registered and 18 anonymous users are browsing this forum.

Moderator:

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

Rating:
Thread views: 12692

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