Neat cloud picture

sopdan

Well-Known Member
http://antwrp.gsfc.nasa.gov/apod/ap040112.html


"What could create a huge hole in the clouds? Such a hole, likely hundreds of meters across, was photographed last month from a driveway near Mobile, Alabama, USA. Very unusual to see, hole-punch clouds like this are still the topic of meteorological speculation. A leading hypothesis holds that the hole-punch cloud is caused by falling ice-crystals. The ice-crystals could originate in a higher cloud or be facilitated by a passing airplane exhaust. If the air has just the right temperature and moisture content, the falling crystals will absorb water from the air and grow. For this to happen, the water must be so cold that all it needs is a surface to freeze on. The moisture lost from the air increases the evaporation rate from the cloud water droplets so they dissipate to form the hole. The now heavier ice crystals continue to fall and form the more tenuous wispy cloud-like virga seen inside and just below the hole. Water and ice from the virga evaporates before they reach the ground."
 

jergar999

Yoke Pumper!
Chemicals!! Run!! The government is trying to take over your mind. I have to sign off now to put on my gas mask and aluminum foil helmet.
 

MikeD

Administrator
Staff member
[ QUOTE ]
Chemicals!! Run!! The government is trying to take over your mind. I have to sign off now to put on my gas mask and aluminum foil helmet.

[/ QUOTE ]

You laugh........
 

Tim06

New Member
[ QUOTE ]
[ QUOTE ]
Chemicals!! Run!! The government is trying to take over your mind. I have to sign off now to put on my gas mask and aluminum foil helmet.

[/ QUOTE ]

You laugh........

[/ QUOTE ]


I knew they were going to do that!!
RUNN!!!!
 

tonyw

Well-Known Member
I just knew there was a reason that we were told to go and get our duck tape and plastic sheeting.
 

MikeD

Administrator
Staff member
[ QUOTE ]
Things are slow now eh?


[/ QUOTE ]

Other than the OH-58 that went down south of Mosul earlier today, there wasn't much air cover to provide. Still crappy WX here.
 
Top