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Azores #96L fails to complete transition into a Sub-Tropical Storm. Elsewhere, weak low pressure in Caribbean may linger into next week.
Days since last H. Landfall - US: Any 46 (Nate) , Major: 64 (Maria) Florida - Any: 74 (Irma) Major: 74 (Irma)
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General Discussion >> Hurricane Ask/Tell

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LoisCane
Veteran Storm Chaser


Reged: Fri
Posts: 1236
Loc: South Florida
What are weather temps needed to sustain a tropical depression?
      #6256 - Mon Mar 03 2003 08:37 AM

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

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Kevin
Weather Master


Reged: Fri
Posts: 524
Loc: EC Florida
Re: What are weather temps needed to sustain a tropical depression?
      #6264 - Tue Mar 18 2003 12:12 PM

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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