Tropical Storm Danny: Cool Moving Picture

Danny is probably not going to become a hurricane, but it may cause some wet weather along the East Coast. But, I did want to draw your attention to a fun bit of animated video. Watch the baby ghost hurricane pop out of the left side of the storm:

CLICK HERE

If you don't look at this some dime today (Aug 27th) you'll probably miss it.

Tags

More like this

SEE ONGOING UPDATES BELOW FOR THE LATEST INFORMATION Tropical Depression Eleven is currently located way east of Florida, and is predicted to become a tropical storm by Tuesday night some time. It would be nameD Joaquin. Some time Wednesday night, the storm is predicted to turn north and head…
UPDATE (Aug 30th) Irma is a new named storm in the Eastern Atlantic. See this post for details, eventually. UPDATE (Aug 29th) There is a system currently raining on Cabo Verde, off the West Coast of Africa (nee Cape Verde) that is expected to develop. It is on the verge of becoming a tropical…
UPDATE Sept 9, AM Note that tropical storm force winds may start hitting southern Florida around 1 or 2 PM today, Saturday, and will reach central Florida by about 8AM Sunday. The eye of the storm should be abreast southern Florida at around sunup on Sunday. The storm may remain a major hurricane…
The Hurricane may (or may not) directly strike the Outer Banks.) I've updated the title of the post to update concern that Hurricane Arthur has a much increased chance of directly striking coastal regions in North Carolina. Scroll down to the most recent update below to find out more. I'm adding…

Weird, it definitely seems to be separate from the primary rotation/storm. Sheer forces causing this I guess?

Either way I'm told we should expect some more good waves on Saturday morning again. Bill's waves occasionally topped 15 feet in some hot surf spots here. Keep in mind we normally consider 5 feet a 'good' day for this area.

That spinning thing might actually be the middle of the storm, or near it. The big clouds may not correspond well to the distribution of the low pressure and the winds. If it all corresponded better, it would be a hurricane!

IANAM (I am not a meteorologist) but that definitely looks like where the storm would have been had it pulled in more of the moisture and coalesced. I wonder how often that occurs and we just don't hear about it.

By ABradford (not verified) on 27 Aug 2009 #permalink

I just looked at it again and you no longer see it popping out ... it is already out and now the clouds are starting to recover it.

It's the low-level circulation separating from the mid-level convection. It's not uncommon and is quite typical in:

  • newly developed cyclones that have vertically-tilted circulations
  • cyclones fighting wind shear
  • weakening systems where the low-level circulation separates from the mid or upper-level circulation

The last storm I recall doing the latter was Hurricane Ivan in 2004 where the low-level circulation actually separted from the mid-level, turned south down the US east coast while the mid-level went out into the Atlantic (different steering currents). The low-level redeveloped and came ashore near the Texas/Louisiana border as a tropical storm.