#22 Postby JetMaxx » Sat Oct 04, 2003 1:25 am
DT and MrBob are correct....and it doesn't take a college degree in meteorology to know what IS and ISN'T possible with Larry and Kate....I'm living proof (barely finished high school).
Why can I say with complete assurance that neither Kate or Larry are U.S. threats? Because I've put forth the effort to learn the science of meteorology...synoptic surface and upper air pattern recognition, climatology, etc . I began learning hurricane climatology and basic forecasting as a teenager...by studying every weather book I could get my hands on.
As I grew older, I began researching severe storms and major hurricanes of the past...not only to learn the stats; but to learn what patterns in the atmosphere CAUSED them. Why did hurricane Camille become so intense? Why did the Great Miami Hurricane move WNW and never recurve? What caused the April 1974 tornado superoutbreak to be a record breaker?
I sought answers in the NOAA Natural Disaster Survey Reports, Weatherwise magazine, and even ESSA and NWS memoranduns. By the time I came onboard the internet in 2000, I had a pretty good grasp of climatology and basic forecasting. What I lacked was a good understanding of forecast model data, and how to combine climatology, pattern recognition, model data, and COMMON SENSE...something even some pro's seem to forget from time to time.
Thanks to learning under pro's such as DT, MrBob, and Tony Cristaldi, I now am more competent than many pro's I know, and many more I see on tv.
I'm very fortunate to have been blessed with enough intelligence to learn quickly and absorb information....and not repeat mistakes.
I'm continuing to learn....MrBob taught me a great deal last winter and early spring regarding winter storm and severe wx forecasting....because sometimes the little things you barely notice can mean the difference in a line of strong t-storms and a tornado outbreak.
I now also have the knowledge to realize there is a certain margin for error on forecast models. This isn't 1955 or 1980....weather date models have become much more accurate since 1992; especially when there is good model agreement. When the only model data forecasting Larry toward the U.S. coast is the LBAR....which isn't even designed to forecast hurricanes north of the deep tropics, I know there is NO WAY Larry will ever strike the U.S.
Kate won't even reach Bermuda...because of a massive trough offshore the U.S. east coast. It isn't possible, and anyone who knows basic meteorology/ wx forecasting knows it.
There are certain things that are absolutes in weather and climate: For example, you can't get a snowstorm in Atlanta in July, or reach 100° in January....and major hurricanes cannot ever penetrate a deep trough with polar air behind it (Kate would be totally destroyed by the jetstream and cold, dry air).
Hurricanes can't just turn on a dime and go wherever they please. It seemed they did without warning in "the old days" because the data models weren't good enough to catch it beforehand...if the models of today had been available to forecasters in 1965, I can assure you hurricane Betsy's erratic and unusual movements would have been known 2-4 days beforehand; not after she began to move...
One problem I notice in this and other weather forums....folks don't give the model data enough credit...don't have enough confidence in the technology. Even though it's crystal clear certainty that Larry will eventually move into Mexico, some still say....it's not a guarantee, there could be surprises. NO there can't....NOT in a situation where ALL the relevant models AND current synoptic situation AGREE.
I said it the other day....we are in a NOVEMBER-like weather pattern across North America, and it isn't going to change in time to send Larry speeding toward the Gulf Coast as Opal did in 1995. Something I learned from veteran Atlanta meteorologist Ken Cook many years ago....when the weather pattern acts like November, tropical systems will react like they do in November....even if it's late September (most tropical systems in the GOM in November are doomed to dissapation from hostile atmospheric conditions).
I can use the same anology about severe storms. Remember the huge widespread tornado outbreak last November 10th....F3/F4 tornadoes from Ohio to Mississippi. It was just like an April "springtime" tornadic swarm. Why? BECAUSE the storm system and atmospheric parameters (i.e.- upper air pattern, jet stream setup, CAPE and Helicity values, size and intensity of the surface cyclone) were just like early April -- so the storm system produced April-like tornadoes...with devastating results.
That's where the "common sense" aspect of forecasting kicks in.
Common sense tells any forecaster that knows how and why hurricanes develop, strengthen, and move there's NO WAY Larry can "slingshot" NE into Apalachicola with such a cold, dry high pressure airmass and strong jet stream in place.
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