#5 Postby Anonymous » Sat Jul 10, 2004 8:17 pm
1953 is one of our analog years for this season...so I expect a similar general track pattern. In fact, it really showcases our forecast of a high eastern GOM / FL Panhandle threat. However, there's a small but important difference between this year and 1953...it had a borderline weak El Nino present. Activity as a whole was therefore slightly suppressed to about 120% NTC...and regionally, formation in the Mean Development Region was somewhat reduced, though more storms formed further west closer to land. Since ENSO should be neutral at the peak this year, rather than weak El Nino...we'll probably see more development east of the Windward Islands and fewer homegrown systems than observed that year.
And 1980 is also one of our analog years. In terms of Mean Development Region activity, I expect 2004 to more closely mirror 1980 since it had a generally neutral ENSO during the peak as well. However, you may notice a different GOM track pattern that year...all 4 GOM storms (Allen, Danielle, Hermine, and Jeanne) were steered westward towards TX and MX. This can be explained by a persistent strong ridge of high pressure that was present over the Central Plains that spring and summer...which resulted in a strong easterly steering flow over the GOM that season. THIS year, the ridge has been focused more in the Southeast...with a weakness further west...more akin to 1953. Yes, patterns can fluctuate and even change, so it doesn't mean the western GOM is out of the woods...especially if a named storm actually forms there. Likewise, it doesn't mean the eastern GOM will get hammered. But IMO the chance is greater for a FL Panhandle hurricane landfall than a TX one this season.
0 likes