QUESTION!!!

[mamadude]

OK if indeed ANA is truely tropical that dismisses the long going fact that SST needs to be 80 or higher, where ANA is now, the SST is in the low 70s at best, so the theory of 80+ water temp must be a thing of the past, I noticed last year a lot of storms developed in "relatively" cool waters, so whats up with that, maybe all these years we have been wrong about the 80 degree waters, maybe its 70 degree water needed or higher, not 80.....just curious if anyone else sees what Im trying to get to here

[Anonymous]

Tropical storms can surive with ssts cooler than 80 degrees by thermodynamics.

[cycloneye]

TWW I think that you will have to explain what is thermdynamics because many people may not know what that is.

[mamadude]

I know what it is, I realize TS can survive in cooler water, but to actually form in cool water is my point

[Anonymous]

In spite of the cool water temperatures, Ana was located in a favorable condition relative to an upper level low, which kept it from ventilating. Thus, Ana was able to sustain deep convection and briefly acquire tropical characteristics. Now just because we had a TS form in low 70 degree water doesn't mean the 78+ rule has to go down the drain. Ana forming in such cold SSTs is the exception, not the rule.

[nwmwhc forecaster 2]

See if every thing else is good for forming a tropical system it can form with waters a little cooler some times...

[Derek Ortt]

If the temp differences are suffieicent, we can get a storm over any SST


For reference, find an abstract on Hurricane Huron and you'll see how systems can have tropical characteristics over even colder SST's

[nwmwhc forecaster 2]

I saw one storm that lasted in upper 60s?