| Thunderbird12 |
| (Meteorologist) |
| Sun Oct 23 2005 09:52 PM |
Re: 00Z Soundings
|
Quote:
Key West Sounding
Helicity (spin) of 524m/s/s.
Tampa-Helicity of 256ms/s.
Miami-Helicity of 236m/s/s
Tip or Thunderbird12. Care to elaborate on the Helicity and the F scale if you have time.
BTW-Jeff Morrow is in Miami. He just said "I don't like the looks of that satellite right now!"~danielw
That sort of helicity coupled with the instability in place is supportive of a few strong (F2 or higher) tornadoes. The helicity is not necessarily higher than you would expect with an approaching hurricane, but the amount of instability is somewhat higher. This is due to some good heating today over south Florida and a lack of a major precipitation shield ahead of the system.
The timing of the landfall may mitigate the overall tornado threat somewhat, though what tornadoes that do form will be more dangerous because it is dark and they will be fast moving and hard to track. If the storm was approaching closer to peak heating, an even more widespread tornado event might have been possible.