How do you get lightning and Hail

This is the general tropical discussion area. Anyone can take their shot at predicting a storms path.

Moderator: S2k Moderators

Forum rules

The posts in this forum are NOT official forecasts and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or STORM2K. For official information, please refer to products from the National Hurricane Center and National Weather Service.

Help Support Storm2K
Message
Author
bwstg

How do you get lightning and Hail

#1 Postby bwstg » Sun Sep 12, 2004 9:08 pm

in a warm system???
0 likes   

CocoaBill
Tropical Storm
Tropical Storm
Posts: 216
Joined: Sun Aug 31, 2003 10:03 am
Location: Cocoa, FL
Contact:

#2 Postby CocoaBill » Sun Sep 12, 2004 9:16 pm

some of the tops of the clouds are going so high into the upper atmosphere - they aren't so warm anymore...........
Last edited by CocoaBill on Sun Sep 12, 2004 9:18 pm, edited 1 time in total.
0 likes   

dennis1x1

#3 Postby dennis1x1 » Sun Sep 12, 2004 9:17 pm

warm CORE system......cdo is -80!!!
0 likes   

bwstg

#4 Postby bwstg » Sun Sep 12, 2004 9:21 pm

dennis1x1 wrote:warm CORE system......cdo is -80!!!


what does that mean, please? Thank you...
0 likes   

dennis1x1

#5 Postby dennis1x1 » Sun Sep 12, 2004 9:22 pm

a normal low pressure storm has a cold core...a tropical system has a warm core....

the intense convection surrounding the warm core (eye) of the hurricane is very high into the atmosphere and the temps at the tops are around -80.
0 likes   

weatherlover427

#6 Postby weatherlover427 » Sun Sep 12, 2004 9:25 pm

dennis1x1 wrote:warm CORE system......cdo is -80!!!


First off, why scream at someone who is trying to learn something?

Second; how can a CDO over a WARM CORE system be 80°C BELOW ZERO?!
0 likes   

User avatar
Stormsfury
Category 5
Category 5
Posts: 10549
Age: 53
Joined: Wed Feb 05, 2003 6:27 pm
Location: Summerville, SC

#7 Postby Stormsfury » Sun Sep 12, 2004 9:26 pm

bwstg wrote:
dennis1x1 wrote:warm CORE system......cdo is -80!!!


what does that mean, please? Thank you...


CDO is Central Dense Overcast ...

Warm Core System is a low of tropical nature and not a cold-core system which is induced baroclinically and by dynamics ...

And just because we're dealing with something that's very odd, occasionally the eyewall does produce convection that is strong enough to support lightning and in rarer forms, hail ... in which, the instability had reached a level that has allowed for updrafts strong enough that ice crystallization to produce 1) lightning, and 2) hail in the NE eyewall ...
Normally, instability in the eyewall is generally very weak with consistent cloud-cover and updrafts not strong enough to support convection that's capable of producing lightning or hail ...

This is looking more and more like yet another RIC (rapid intensification cycle) might be ready to unfold ... until we get to the next ERC (eyewall replacement cycle) ...

SF
0 likes   

bwstg

#8 Postby bwstg » Sun Sep 12, 2004 9:28 pm

Stormsfury wrote:
bwstg wrote:
dennis1x1 wrote:warm CORE system......cdo is -80!!!


what does that mean, please? Thank you...


CDO is Central Dense Overcast ...

Warm Core System is a low of tropical nature and not a cold-core system which is induced baroclinically and by dynamics ...

And just because we're dealing with something that's very odd, occasionally the eyewall does produce convection that is strong enough to support lightning and in rarer forms, hail ... in which, the instability had reached a level that has allowed for updrafts strong enough that ice crystallization to produce 1) lightning, and 2) hail in the NE eyewall ...
Normally, instability in the eyewall is generally very weak with consistent cloud-cover and updrafts not strong enough to support convection that's capable of producing lightning or hail ...

This is looking more and more like yet another RIC (rapid intensification cycle) might be ready to unfold ... until we get to the next ERC (eyewall replacement cycle) ...

SF


Thank you all for this information. I appreciate it very much soo...
0 likes   

dennis1x1

#9 Postby dennis1x1 » Sun Sep 12, 2004 9:35 pm

josh...time for your meds..

noone was screaming (caps)...i was emphasizing how cold the cloud tops of Ivan are right now.....

i also further explained what i meant later.....

as for your question...the CDO is AROUND (not screaming) the warm core....not over it..
0 likes   

User avatar
Stormsfury
Category 5
Category 5
Posts: 10549
Age: 53
Joined: Wed Feb 05, 2003 6:27 pm
Location: Summerville, SC

#10 Postby Stormsfury » Sun Sep 12, 2004 9:44 pm

Oh, and also the -80ºC are coming from the cloud tops as imaged on IR ... which IR simply measures (heat, or lack thereof) temperatures within clouds, ground, ocean, etc ...

SF
0 likes   

User avatar
LSU2001
S2K Supporter
S2K Supporter
Posts: 1711
Age: 58
Joined: Sat Sep 11, 2004 11:01 pm
Location: Cut Off, Louisiana

#11 Postby LSU2001 » Sun Sep 12, 2004 10:39 pm

You can also think about it like this. Summer thunderstorms in midwest sometimes have hail right. they are over hot ground. same type of idea.
I think.
0 likes   

User avatar
USAwx1
Professional-Met
Professional-Met
Posts: 936
Joined: Mon Apr 26, 2004 5:57 pm
Location: Marineland, FL

#12 Postby USAwx1 » Sun Sep 12, 2004 10:44 pm

Stormsfury wrote:Oh, and also the -80ºC are coming from the cloud tops as imaged on IR ... which IR simply measures (heat, or lack thereof) temperatures within clouds, ground, ocean, etc ...

SF


the stronger thunderstorms reach higher levels in the atmosphere, thus the reason for the colder cloud tops.

WARMER cloud tops are associated w/ weaker and low topped convection.
0 likes   


Return to “Talkin' Tropics”

Who is online

Users browsing this forum: hurricanes1234 and 323 guests