LoisCane
(Veteran Storm Chaser)
Mon Mar 03 2003 08:37 AM
What are weather temps needed to sustain a tropical depression?

not specifically a hurricane but if someone would like to break it down i would be really appreciative..

for....say tropical disturbance, depression, storm and of course... a HURRICANE

this morning i believe Key West was around 79, what with the heat ridge over Cuba and ongoing HOT weather, should be climbing very unseasonably fast


Kevin
(Weather Master)
Tue Mar 18 2003 12:12 PM
Re: What are weather temps needed to sustain a tropical depression?

Okay. There is pretty much a universal water temperature to support most ALL tropical cyclones in the Atlantic Basin. That temperature is the infamous 26C (80F). 80 degrees F will certainly support a disturbance, a depression/TS, and probably a cat. 1 hurricane. For a cat. 2 and up, I'd say at least 83 degrees is needed (probably warmer in most cases).

SSTA anomalies for 3/17/03:
http://www.osdpd.noaa.gov/PSB/EPS/SST/data/anomnight.3.17.2003.gif
Notice...the SSTA's are WELL above normal near the SE US. This could be a seaon-long trend and if we get any storms up the alley this year, this could be a big boost to them. That is IF these SSTA are a trend.



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